Answer: In protein synthesis, an mRNA strand serves as a template while in DNA replication, a DNA strand serves as a template. Protein synthesis occurs in the ribosome while DNA replication occurs in the nucleus.
Explanation: DNA replication is a process by which a double stranded DNA molecule is copied into two identical daughter DNA molecules while protein synthesis is a process by which proteins are made from an mRNA molecule. In DNA replication, a DNA strand serves as a template while in protein synthesis, an mRNA strand serves as a template. DNA replication occurs in the nucleus while protein synthesis occurs in the ribosome. Another name for protein synthesis is translation.
Which conditions are necessary for natural selection to occur? Select all of the answers that apply.
A.
Inheritable adaptations vary among individuals.
B.
The population size is increasing.
C.
More individuals are born than can survive.
D.
Fitness varies among individuals.
E.
The environment changes suddenly and drastically.
Answer:
A,C,D
Explanation:
i took the test!
Natural selection requires inheritable variations among individuals, more individuals being born than can survive, and varying levels of fitness among individuals.
Explanation:For natural selection to take place, certain conditions must be fulfilled. These include options A - Inheritable adaptations vary among individuals, C - More individuals are born than can survive, and D - Fitness varies among individuals.
A - Inheritable adaptations vary among individuals: This means that individuals within a population have different traits, and these traits can be passed down to their offspring.
C - More individuals are born than can survive: This refers to the concept of struggle for existence, where the resources are limited, but the organisms born are more than the resources can sustain, leading to a competition.
D - Fitness varies among individuals: This refers to differential survival and reproduction. Individuals with traits that give them an advantage in their environment are more likely to survive and reproduce, thus passing on those traits to future generations.
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endocytosis brings large particles
Explanation:
During endocytosis large cells, particles, and cell fragments moved across the plasma membrane through a process of invagination; part of the external cell membrane folds into itself and creates a small pocket that surrounds the target molecule, this breaks off from the membrane to form an intracellular vesicle.
Specific endocytosis processes, such as phagocytosis, pinocytosis, and endocytosis are regulated by receptors-they take in cells, fluids, and specific compounds respectively. During phagocytosis, cells absorb large particles in cell compartments called phagosomes, after which specifically enzyme-containing lysosomes break them down.
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This is a photograph of a maritime forest on the coast of South Carolina. Notice the Spanish moss hanging from the tree branches. Spanish moss is a ___________ and the oak tree is its host.
A) predator
B) parasite
C) producer
Eliminate
D) disease agent
Answer:
I hope this really helps
Explanation:
Because the tree is called the host, and the moss is living off of the tree, that makes the moss a parasite.
For a each parasite, it must have a host that provides food and nutrients for it. Or else the parasite cannot survive.
The peripheral nervous system is involved in _____.
involuntary, but not voluntary, actions
both voluntary and involuntary actions
voluntary, but not involuntary, actions
The peripheral nervous system is involved in both voluntary and involuntary actions.
Explanation:
The peripheral nervous system (PNS) is the neural system that resides outside the central nervous system (CNS). This contains nerves which in turn connect with the organs of the body like the sensory organs, glands, blood vessels, muscles etc with the central nervous system (CNS).
The PNS is divided into somatic and autonomic nervous systems.
The somatic nervous system contains sensory and motor nerve fibers which send sensory information and controls motor functions respectively. The voluntary movements of skin, skeletal muscles, bones, and joints are controlled by somatic PNS.
The autonomic nervous system composed of sympathetic, parasympathetic and enteric nervous systems controls the involuntary actions of smooth muscles of the internal visceral organs.
Which type of thermal energy transfer causes clouds to form?
Question 2 options:
convection
conduction
radiation
freezing
Answer:
Convection
Explanation:
Answer:
Option A, Convection
Explanation:
In convection, heat is transferred by physical movement of either liquid or gas from one region to other. This movement is governed by difference between the temperatures of two regions.
When water gets heated, it converts into water vapor and starts moving towards the sky.
As it reaches a certain altitude the water vapor condenses to form tiny water droplets that constitutes the clouds
Hence, option A is correct
Drag each item to the correct location in order to place the events in the development of plants into the correct order
Explanation:
The events in the development of plants is as follows:
1. Cyanobacteria begin to photosynthesize.
Cyanobacteria which are commonly called as Blue green algae are Prokaryotes.
They are aquatic and photosynthetic, it means, they live in the water, and can manufacture their own food.
2. Cyanobacteria become the chloroplast of plants.
Cyanobacteria have the endosymbiotic plastid. Eukaryotes or plants considered to have evolved from endosymbiotic cyanobacteria.
3. Bryophytes become the first land plants.
Bryophytes are the first land plants to be evolved from aquatic plants, specifically green algae.
4. Plants evolve to have vascular tissue to transport water.
During the evolution of plants from Bryophytes to Pteridophytes, Pteridophytic plants have vascular tissue i.e. xylem and phloem. Xylem helps in transport of water to various parts of the plants.
The events in the development of plants into the correct order is Cyanobacteria begin to photosynthesize -> Cyanobacteria become the chloroplasts of plants -> Bryophytes become the first land plants -> Plants evolve to have vascular tissue to transport water.
Cyanobacteria are photosynthetic bacteria that are thought to be the ancestors of plant chloroplasts.
Chloroplasts are the organelles in plant cells that are responsible for photosynthesis.
Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into oxygen and glucose.
Bryophytes are a group of nonvascular plants that are the first plants to colonize land.
Nonvascular plants do not have vascular tissue, which is specialized tissue that transports water and nutrients throughout the plant.
Vascular tissue evolved in plants to help them transport water and nutrients more efficiently.
This allowed plants to grow larger and taller than nonvascular plants.
Therefore, the correct order of the events in the development of plants is as follows:
Cyanobacteria begin to photosynthesize.
Cyanobacteria become the chloroplasts of plants.
Bryophytes become the first land plants.
Plants evolve to have vascular tissue to transport water.
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What are the end products of the electron transport chain?
The end products of electron transport chain are:
Water
Adenosine triphosphate (ATP)
Explanation:
Most of the free energy released during the oxidation of glucose to CO₂ is retained in the reduced co-enzyme NADH and FADH₂, generated during the kreb's cycle.Electron are released from these co-enzymes and are eventually transferred to an oxygen molecule to form water.These transfer of electron from co-enzymes to oxygen molecule occurs through a series of protein complexes in the mitochondrial membrane. And the process is termed as Electron Transport Chain.The large amount of free energy is released during the oxidation of NADH and FADH₂ is used in the production of ATPExtend your thinking: In living organisms, the cell cycle is closely regulated. What do you
think will happen if cell division is not controlled?
Final answer:
Uncontrolled cell division can lead to the development of tumors and cancer, as cells may not perform their functions correctly and could proliferate excessively. This is normally prevented by a tightly regulated cell cycle, controlled by a series of checkpoints and signaling mechanisms.
Explanation:
If cell division is not controlled in living organisms, the consequences can be dire. Cells may not perform their necessary functions properly, leading to abnormal growths like cancer. Healthy cells normally undergo regulated cycles of growth, DNA replication, and division, which include critical checkpoints to ensure everything is proceeding correctly. However, uncontrolled cell division can occur if there are failures of cell cycle control, often due to genetic abnormalities or environmental damage to DNA. These conditions can lead to rapid and uncontrolled growth of abnormal cells, forming tumors that may be benign or malignant—cancerous—depending on their potential to harm surrounding tissues.
The cell cycle is normally tightly controlled by a complex system that includes both internal regulators and external signals. These regulatory mechanisms are crucial for maintaining cellular and organismal health. Loss of this control, often through mutations or external factors, leads to diseases like cancer. It's a balance of 'stop' and 'go' signals that direct cell cycle control, and any disruption can result in excessive cell division and tumor formation, potentially leading to serious health issues or death.
Which of the following types of solutions should be used when preparing a wet mount? (Circle one.) a. hypertonic b.hypotonic c.isotonic
Answer:
Which of the following types of solutions should be used when preparing a wet mount?
Hypotonic solution is used to prepare a wet mount
Explanation:
In using an hypotonic solution to prepare such wet, this enable the solution to absorb water from the solution as a result of not having enough content in the cell
Final answer:
An isotonic (option c) solution should be used when preparing a wet mount because it maintains the natural shape and function of cells. Hypotonic and hypertonic solutions can cause cells to swell or shrink, respectively, which can interfere with observations.
Explanation:
When preparing a wet mount, the type of solution that should be used is an c. isotonic solution. An isotonic solution has the same solute concentration as the cells, preventing net movement of water into or out of the cells. In this balanced state, cells maintain their normal shape and function, which is crucial for observing them under a microscope.
In a hypotonic solution, the concentration of solute is less than that inside the cells, causing water to enter the cells. This results in the cells swelling and potentially bursting. Conversely, in a hypertonic solution, the concentration of solute is higher outside the cells than inside, leading to water leaving the cells and causing them to shrink or collapse. These conditions are not ideal for observing the true structure of cells in a wet mount.
How much more [H+] does lemon juice (pH 2) have compared with pure water (pH 7)? Remember that each pH unit represents a 10 fold change in the [H+].
Answer:
[tex]10^5 \\or\\100,000[/tex]
Explanation:
As we know that the formula for pH is
[tex]pH = -[log H+]\\[/tex]
It is also given in the question that one pH unit represents the 10 fold change in the concentration of hydrogen ion.
Now for lemon juice whose pH is 2, hydrogen ion concentration is equal to
[tex]10^-2\\= \frac{1}{100}[/tex]
And for pure water whose pH is [tex]7[/tex], hydrogen ion concentration is equal to
[tex]10^ -7\\= \frac{1}{10000000}[/tex]
Thus, the H+ ion concentration in lemon juice is [tex]10^5[/tex] times greater than the pure water.
The difference in [H+] between lemon juice and pure water is 100,000 times.
Explanation:The difference in pH between lemon juice (pH 2) and pure water (pH 7) is 5. Since each pH unit represents a 10-fold change in [H+], we can calculate the difference in [H+] using the formula:
[H+] difference = 10pH1 - pH2
Substituting the values, we get [H+] difference = 107 - 2 = 105 = 100,000 times more [H+] in lemon juice compared to pure water.
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Translation of the DNA sequence AAGCTGGGA would result in
Answer:
The correct option is ' an mRNA strand with the sequence UUCGACCCU.'
Explanation:
The central dogma comprises of the process of transcription and the process of translation. Transcription can be described as the process in which an mRNA is made form a DNA sequence. Translation can be described as a process in which proteins are made from the mRNA.
The transcription of the genetic code AAGCTGGGA will result in the production of the mRNA UUCGACCCU. The translation of this mRNA will lead to the formation of the amino acids, Phe- Asp- Pro.
What part of the brain connects the brain and the eyes?
O
A. Brain stem
O
B. Midbrain
O
c. Thalamus
O
D. Hypothalamus
Answer:
B. Midbrain
Explanation:
The midbrain is the uppermost region of the brainstem, which serves as the primary connection between the central nervous system. The midbrain is made up of three major components: the colliculus, tegmentus, and cerebral peduncles. The midbrain, commonly known as the roof and the tegmentum, is a growing human brain structure that includes the roof and the tegmentum. The midbrain is necessary for muscle movement, particularly eye movement, as well as multisensory processing.
The thalamus connects the brain and the eyes, acting as the primary relay station for visual information from the retina. Though the optic nerve and midbrain are involved in visual processing, the thalamus is the correct answer among the options provided.
The Connection Between the Brain and the Eyes
The part of the brain that connects the brain and the eyes is the optic tract, which is an extension of the optic nerves after they cross at the optic chiasm. The optic tracts continue to the thalamus, which is part of the diencephalon, along with other connections to the hypothalamus and the midbrain. However, when considering the choices provided in the question (Brain stem, Midbrain, Thalamus, Hypothalamus), the thalamus is the most accurate answer as it is the primary relay station for visual information coming from the retina before it proceeds to the visual cortex of the cerebrum.
It's important to note that while the optic nerve and tract are directly involved in the pathway from the eyes to the brain, the brain stem, which include the midbrain, plays a role in coordinating sensory representations including those for visual information. Yet, for the connection between the brain and eyes specifically, the thalamus is where the optic tracts relay visual signals.
What is the energy transformation taking place as a moving roller coaster slowly climbs a steep hill?
Potential energy to kinetic energy
Kinetic energy to potential energy
Radiant energy to chemical energy
Chemical energy to radiant energy
Answer:
Potential energy to kinetic energy
Explanation:
The answer is kinetic to potential because at the highest point of the track it has the highest amount of energy so at the bottom of the hill it has the highest amount of kinetic. And as it gradually climbs the steep hill it gaines more potential energy!
What is it called when molecules move from low to high concentration across plasma membranes?
Answer: Osmosis
Explanation: Osmosis is a process in which water move from an area of low solute concentration to an area of high solute concentration through a selectively permeable membrane. For osmosis to occur, it must be through a selectively permeable membrane. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.
Active transport is the process whereby molecules move from areas of low concentration to areas of high concentration across plasma membranes, which requires energy usually in the form of ATP.
Explanation:When molecules move from an area of low concentration to an area of high concentration across plasma membranes, the process is called active transport. This is in contrast to passive transport, where molecules move from high to low concentration. Active transport requires energy in the form of ATP because the molecules are moving against the concentration gradient. An example of this would be the sodium-potassium pump found in many cell membranes. This protein pump uses ATP to move sodium ions out of the cell and potassium ions into the cell, both against their respective concentration gradients.
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organism interaction and relationship webquest
In biology, organism interaction and relationships refer to the ways in which different species interact with each other and their environment. This can include predator-prey relationships, symbiosis, competition, and more. Studying these interactions helps us understand the complex properties of organisms and how they interact with their environment.
Explanation:In biology, organism interaction and relationships refer to the ways in which different species interact with each other and their environment. These interactions can include predator-prey relationships, symbiosis, competition, and more. One example of organism interaction is a food web, which shows the feeding relationships between different organisms in an ecosystem.
For instance, a food web can show how plants are consumed by herbivores, which are then consumed by carnivores. Another example of organism interaction is the evolutionary relationships among species, which can be explored through interactive exercises and phylogenetic analysis.
Overall, studying organism interaction and relationships helps us understand the complex properties of organisms and how they interact with their environment.
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Which of the following processes releases carbon dioxide into the
atmosphere?
Answer:
cellular respiration
Explanation:
Student 1 said,
Magnetic force and electric charges are similar, because
opposites attract and likes repel.
Student 2 said,
Magnetism and electricity are similar because they both have
a force field extending out from them so they don’t have to
touch to work.
How would you respond to these students?
Student 1 -
Magnetic force and electric force are similar, because as in magnets the like (North and South) poles repel and unlike poles attract similarly in electricity the charges repel
Explanation
Magnets are dipole having a north pole and south pole respectively and when two magnetic objects are close to each other and in magnetic fields it is when the magnetic forces act upon each other where like poles attract and unlike poles repel. Now in case of electricity, we have a positive (+) charge and a negative charge(-) which attracts and repels similarly. Hence we can say that magnetic force and electric charges can be similar.Student 2 -
Magnetism and electricity are similar because magnetism exerts magnetic field extending out from it and electricity exerts electric field.
Explanation:
Now when we have to explain the forces acting with touching each other, we can give several examples for this one being the gravitational force. To consider the forces acting on each other without being in contact, we always imagine a field or an area around that object, and anything or any object coming close to this field would get pulled because of the field force or charge it exerts.The property of magnetism generally defined as a force of either attraction or repulsion acting at a distance. This is due to a magnetic field caused by moving electrically charged particles. It is also essentially in all magnetic objects. And for this, the magnetic objects in the field do not necessarily touch each other but the direction of poles which attract or repel from each other.In case of electricity, or you can term it is as an electric field it exerts an electrostatic force that pulls the object or a body coming close in that electrically charged field.Student 1 and Student 2 both make accurate statements about electricity and magnetism. They share similarities in attraction and repulsion, and both have force fields that extend from them. However, they differ in the concept of monopoles and the directions of the forces they exert.
Both electricity and magnetism share several fundamental similarities and differences:
Similarities :
Attraction and Repulsion: Just like electric charges, magnetic poles exhibit attraction between opposites and repulsion between like poles. This means that positive charges attract negative charges, and similarly, a North magnetic pole attracts a South magnetic pole.Field Concept: Both electric charges and magnetic poles have force fields extending out from them, which allows them to exert force without direct contact.Differences :
Monopoles: While electric charges can exist as single positive or negative charges (monopoles), magnetic fields always exist as dipoles with a North and a South pole. There are no isolated magnetic monopoles in known physics.Force Directions: The electric force on a charge in an electric field is parallel to the field lines, whereas the magnetic force on a moving charge is perpendicular to both its velocity and the magnetic field lines.In summary, Student 1 is correct in noting that both systems involve opposites attracting and likes repelling. Student 2 accurately points out that both electric and magnetic forces can act over a distance through their fields without direct contact.
Who did Charles Darwin study with
Charles Darwin has studied with many people, but his most important studies were with Alfred Russel Wallace.
Please help: Which process in plant physiology could not occur if the opening of the undersides leaves are closed?
A)photosynthesis
B)phototropism
C)reproduction
D)respiration
A)Photosynthesis
Explanation:
Photosynthesis is the process by which green plant prepare glucose using carbon dioxide and water in presence of sunlight and chlorophyll.The openings on the undersurface of the leaves are called stomata. Stomata play a vital role in exchange of gases between tissues and the surrounding.If these openings remain closed then carbon dioxide will not diffuse into the cells and oxygen will not diffuse out of the cell.As a result, photosynthesis will not take place and the plants will die due to lack of food and nutrients.Match each vocabulary word to the correct definition.
Following are the definitions matched with the words given
Explanation:
Social behavior
having a complex social structure marked by role specializations.
Hydrodynamic :
related to movement of fluids or related to objects moving in fluids.
Forage :
to forage is to search for and collect food.
Migrate :
to move from one location to another seasonally.
Eusocial :
the interaction between two or more members of the same species. These interactions are highly ritualized and follow the same pattern every time.
Answer:
Social behavior: the interactions between two or more members of the same species
hydrodynamic: relating to the movement of a fluid or object's through a fluid
Forage: to search for and collect food
Migrate: to move from one location to another seasonally
Eusocial: having a complex social structure characterized by role specialization
Explanation:
Which of these sounds has the largest amplitude?
Select one:
a. a deep, loud blast from a tuba
b. a leaf crunching underfoot
c. a light tap on a drum
d. a flute playing a soothing high-pitched note
Answer:
its A
Explanation:
Match the components of MSW landfill to its description.
Municipal Solid Waste (MSW) landfill is a discrete area of land that recieves household waste.
Explanation:
Leachate collection System - A system of pipes that collect contaminated water that seeps into the bottom of a landfill.
Cells - They are approved areas for waste disposal.
Bottom liner - The landfill part that prevents the contact of burried waste with underlying soils and groundwater.
Groundwater Monitoring System - They are built to test the presence of leachate chemicals in the groundwater around landfill.
How does cellular respiration help you body perform life functions?
Answer:
Cellular Respiration Lets Organisms Capture Glucose Energy
Cellular respiration converts the chemical energy stored in glucose into chemical energy stored in the ATP molecule. ATP is used by all cells to power their metabolism and their activities. ... They then use the ATP energy for activities such as muscle contracting.
Explanation:
Answer: Cellular respiration help your body perform life functions by providing you with energy, and acting as a way to get rid of carbon dioxide from your body.
Explanation: When cellular respiration is complete, energy, water, and carbon dioxide will be produced. Energy will be used by your body, and carbon dioxide will be removed from your body into the air. Plants perform cellular respiration but produce oxygen and glucose, the things that your body needs to perform cellular respiration.
How many of the known minerals found in the Earth's crust are impure? (mixed with something else)
a) None of them
b) All of them
Answer:
Explanation: All of them
Nearly all known minerals in the Earth's crust are impure, as they are typically found as chemical compounds within rocks. Only a few, like gold and diamonds, are commonly found in their pure form. Impurities in minerals can affect their commercial value and rarity.
Explanation:The question of how many known minerals found in the Earth's crust are impure is best answered with option b) All of them. Minerals are naturally occurring inorganic substances with a unique crystal structure and composition. While 5,575 known minerals have been identified by the International Mineralogical Association, the vast majority of them are found as chemical compounds within rocks, meaning that they are mixed with other elements or minerals. Only a few minerals, such as gold and diamonds, are commonly found in their pure form. The purity of minerals is a significant factor in their commercial value; hence, considerable effort is required to find and extract economically valuable minerals for industrial use.
Minerals that make up the Earth's crust are predominantly compounds of oxygen and silicon, with smaller amounts of other elements. The crust itself is composed of approximately 25 common minerals. However, impurities are present in most mineral samples, which means that an entirely pure mineral is quite rare. Even so, the common minerals are crucial for the structure of the Earth's crust and its geological processes.
Which options correctly describe a biological change caused by introducing the kudzu vine into the southeastern United States?
Select all that apply.
populations of small animals decreased, and populations of large animals increased
native animal populations decreased
native plant populations decreased
tree species increased while small plant species decreased
The biological change caused by introducing the kudzu vine into the southeastern United States are
native animal populations decreased
native plant populations decreased
Explanation:
Japanese arrowhead is the other name given for Kudzu. These plants belongs to Pueraria. These are coiling,climbing in nature. These were introduced in US in 1876,for the purpose of preventing the erosion of soil. But, because of the growth rate of these plants at higher rates and the consequences to the ecology, it was removed.
The index of the leaves of these plants and the rate of photosynthesis process was too high for these plants. Because of the rooting of these plants affected native plants,shrubs and trees. It caused sever damage to the native plants and native animals in the ecosystem of forest areas.
Final answer:
The kudzu vine has caused a decrease in native plant and potentially animal populations by out-competing them, impacting the ecosystem significantly. (Option B and C)
Explanation:
The introduction of the kudzu vine into the southeastern United States has caused significant biological changes to the ecosystem. This invasive species, which originates from Japan, has been known to out-compete native vegetation, leading to a decrease in native plant populations. The kudzu's rapid growth and lack of natural predators in its new environment have enabled it to dominate landscapes, climbing over trees and shrubs and thus reducing the availability of resources needed for the survival of various native plant and animal species.
Moreover, this dominance by the kudzu vine can lead to a decline in native animal populations due to the alteration of habitat and reduction in food sources that many native animals depend on. However, the assertion that populations of small animals decreased and populations of large animals increased is too specific and not directly supported by the general impacts of kudzu. Similarly, the statement that tree species increased while small plant species decreased is not accurate, as kudzu typically covers and shades out many plants, including trees, leading to a decrease in diversity.
Which of these is a benefit of GMOs?
A) decreased need for harmful
pesticides
B) decreased nutritional value
C) helpful to all farmers
GMOs have numerous benefits, including a decreased need for harmful pesticides, potential for increased nutritional value, and potential to benefit farmers by improving crop yields and resistance to environmental conditions.
Explanation:The benefits of Genetically Modified Organisms or GMOs vary depending on their use and application, though they generally provide numerous advantages. These include:
A) decreased need for harmful pesticides: GMOs are often engineered to be resistant to specific pests, which reduces the need for harmful, chemical laden pesticides. B) decreased nutritional value: This is not a benefit, but rather a common misconception. In fact, GMOs can be engineered to have increased nutritional value. C) helpful to all farmers: While this is subjective and dependent on the specific type of GMO and the farmer's individual circumstances, GMOs can provide notable benefits, such as increased crop yield and resistance to certain environmental conditions. Learn more about GMOs here:https://brainly.com/question/30526813
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Final answer:
GMOs can decrease the need for harmful pesticides by providing pest-resistant crops, making agriculture more sustainable and efficient.
Explanation:
One benefit of Genetically Modified Organisms (GMOs) is the decreased need for harmful pesticides. When crops are engineered for pest resistance, the use of chemical pesticides can be reduced, resulting in a safer, more sustainable form of pest control. GMO crops such as glyphosate-resistant varieties enable farmers to manage weeds more efficiently, thereby reducing labor and potentially harmful agricultural inputs. Option A
Moreover, biotechnology in agriculture has made it possible to improve the nutritional value of crops, and applications like Bt Cotton in India demonstrate increases in productivity by targeting specific pests. However, the long-term effects on pesticide use are complex, as resistance in pests can develop. It's important to note that while GMOs can be beneficial, the availability and cost of genetically modified seeds can vary, which may not always benefit all farmers equally.
The blue shiner is an endangered fish in Georgia. It lives in the Coosawattee River. A dam is built on the river to create a reservoir. The water below the dam decreases.
What would MOST LIKELY happen to the blue shiner numbers after the dam is built on the river?
A) They would decrease because of new predator fish.
B) They would increase because they will have more space to lay eggs.
C) They would decrease because the dam would change the environment.
D) They would increase because there would be more nutrients in the water.
Answer:
D
Explanation:
Answer:
c
Explanation:
The lack of upwelling during an El Nino period results in which of the following
Answer:
Fish migration to other parts of the ocean results when there is a lack of upwelling during an El Nino period.
Explanation:
During an El Nino period, the trade winds blow towards the east and keep eastern Pacific Ocean warmer.
Ocean upwelling due to trade wind brings nutrient-rich cool and dense water to the ocean’s surface. Upwelling makes the surface ocean water fertile for a healthy marine life.
El Nino not only affects the ocean’s surface water temperature but also the strength and speed of the ocean currents, all of which affects marine life.
During El Nino Southern Oscillation when there is a warm phase, the trade wind becomes weak and warm water is pushed into the eastern Pacific Ocean.
Due to weaker trade winds, upwelling of ocean waters is reduced and the nutrient-rich waters remain in the deep and far from the coastal areas.
This makes the fishes like anchovies to migrate from the surface waters to deep and far ocean areas in search of nutrients.
Histone methyltransferases are a class of enzymes that methylate certain amino acid sequences in histone proteins. A research team found that transcription of gene R decreases when histone methyltransferase activity is inhibited. Which scientific claim is most consistent with these findings?
The histone methyltransferases enzymes prevents the access of transcription factors of R gene there by decreasing the activity of R gene.
Explanation:
Histone methyltransferase enzymes perform methylation or demethylation of a DNA sequence of a gene.
These enzymes can get the gene on or off by performing methylation or demethlylation of DNA sequence or gene.
They surround the gene to be transcripted by polyadenylation tail, this prevents the access of transcription factors to the gene, thereby preventing the transcription process and consequently no protein formed.
This way transcription of R gene decreases.
By methylating the DNA sequence it modifies the gene and inhibits transcription thereby decreasing or no enzymatic activity.
Transcription is the process by which RNA is produced from the DNA. Option D is correct. Histone methylation opens up chromatin at gene R so transcription factors can bind to DNA more easily.
Histone Methylation:
It is the process by which histone is methylated by the action of histone methyl transferase.
The transcription of the R gene is decreased when methyl transferase activity is inhibited. This means the nucleosome structure is not opened up yet. Hence, RNA polymerase is unable to bind with DNA.
Therefore, Histone methylation opens up chromatin at gene R so transcription factors can bind to DNA more easily.
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I’m a scientific investigation the term quantitative data refers to niñera that are usually followed by
Answer:
In a scientific investigation the term quantitative data refers to numbers that are usually followed by a unit.
Explanation:
A scientific investigation can be described as an investigation which is made through the scientific method of research. A scientific question is often tried to be answered through valid experiments by this method. The experiments performed can either be quantitative or qualitative. Quantitative data is the data which is taken through mathematical or statistical methods and has a well-defined unit in which the measurements or numbers are being taken.