Answer:
Fertilization is the union of an egg and sperm cell, process that occurs in sexual reproduction.
Explanation:
Fertilization or fecundation is a biological process that occurs in the context of sexual reproduction of living beings. It consists of the union of gametes, male (sperm) and female (egg), provided by the parents.
As a result of fertilization, the zygote is produced, a cell that will suffer successive divisions to form the embryo, the beginning of a new individual.
Both reproduction and fertilization are necessary processes for the perpetuation of a species.
The other options do not correspond to fertilization because:
create a new cell with half the chromosomes of a gamete (this process does not occur). Meiosis creates four identical daughter cells .Gametogenesis is the process by which gametes are formed.Learn more:
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Answer:
Fertilization is-
E. Is the union of an egg and sperm cell
Explanation:
Hope this helps have a wonderful day <3
How long does it take minerals to form
Answer:
I don't think there is any way to know :/ but they can take seconds to years.
UIZ
Similarities Among Organisms
Reading Off
Which statement is accurate about the number of genes in different species of living things?
O The more complex a living thing the more chromosomes it is likely to have
The more complex a living thing the fewer chromosomes it is likely to have
O Amouse and a human have about the same number of genes.
O All living things have about the same number of genes.
Please help. I will give brainliest.
Answer:
The correct option is C) A mouse and a human have about the same number of genes.
Explanation:
The technique of genetic sequencing has enable us to learn and compare thee genomes of different organisms. Genome sequencing proves that the genome of the humans and mice are about 99 percent similar. The number of genes in the mouse genome and the genome of humans is almost equal.
Other options, like option A, cannot be true because many complex organisms have fewer chromosomes than other organisms. For example, there are many simple plants which have more number of chromosomes than the complex humans.
will an object denser than water float or sink
Answer: An object denser than water will sink in water.
Explanation: The ability of an object to float or sink in water depends on its density. An object that is denser or heavier than water will sink in water while an object that is less dense or lighter than water will float in water. For example a piece of stone will sink in water because it is denser than water while a plastic container will float in water because it is less dense than water.
Which of the following variables are constants in the Cell Homeostasis Virtual Lab? The percent concentrations of sugar solution in beakers B-E The type of solute (dissolved solid) The percent concentration of sugar solution in dialysis tubes B-E The mass of the sugar The amount of water in the beakers The amount of water in the dialysis tubes The amount of time the dialysis tubes are exposed to the sugar solutions in the beakers
Answer:
The amount of water in the beakers
Explanation:
The Cell Homeostasis Virtual Lab is an online experiment that illustrates the principles of homeostasis, osmosis and diffusion.The materials consist of beakers, dialysis tubing, sugar and water.The experiment measures the change in the mass of a solution at varying concentrations of sugar.The experiment demonstrates diffusion of sugar molecules through the dialysis tubing into the water-sugar solution.The change in the sugar concentration is the independent variable as it changes and in turn effects the dependent variable.The response or dependent variable, in this experiment, is the mass of the solution.The amount of water in the beakers does not change. Therefore, in this experiment, it is a constant value.The variables that are constant in the cell homeostasis virtual lab will be:
The amount of time the dialysis tubes were soaked.The amount of water in the beakers.The type of solute.Homeostasis simply means the state of steady internal, chemical, and physical conditions that are maintained by living systems.
Homeostasis is the condition of optimal functioning for an organism such as the body temperature and fluid balance.
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3. Describe the functions of each of the eleven organ systems.
Answer:
Explanation:
integumentary- protection, produce vitamin d
reproductive- produce offspring
nervous-take messages in, process them, send messages out
endocrine-control body chemically by producing hormones
digestive-absorb nutrients and calories
cardiovascular-move stuff around the body
respiratory-take in O2 gas and get rid of CO2
immune-fight off invaders
skeletal-provide a framework and protect vital organs
muscular-allow movement
urinary- remove waste and control water balance
Final answer:
The eleven organ systems include the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic and immune, respiratory, digestive, urinary, and reproductive systems. Each has specific functions such as protection, support, movement, coordination, hormone production, circulation, defense, respiration, digestion, waste elimination, and reproduction, respectively.
Explanation:
Functions of the Eleven Organ Systems
The human body comprises various organ systems, each with specialized functions. These organ systems facilitate essential life processes, including organization, metabolism, movement, development, and reproduction. The eleven organ systems are as follows:
Integumentary System: Protects the body, regulates temperature, and provides sensory information.
Skeletal System: Supports the body, protects internal organs, and facilitates movement through the attachment of muscles.
Muscular System: Enables movement of the body and internal organs, maintains posture, and generates heat.
Nervous System: Processes sensory information, controls responses to external and internal stimuli, and coordinates bodily functions.
Endocrine System: Produces hormones that regulate body activities, such as growth, metabolism, and reproduction.
Cardiovascular System: Circulates blood throughout the body, delivering oxygen and nutrients to cells while removing waste products.
Lymphatic and Immune System: Defends against pathogens, returns leaked fluids to the bloodstream, and helps in the absorption of fats and fat-soluble nutrients.
Respiratory System: Facilitates the exchange of gases (oxygen and carbon dioxide) between the external environment and blood.
Digestive System: Breaks down food into nutrients that can be absorbed into the body, and eliminates waste.
Urinary System: Removes waste products from the blood, regulates blood volume and pressure, and controls fluid and electrolyte balance.
Reproductive System: Produces and transports sex cells, with the female system also providing an environment for the development of a fetus.
Many organs belong to more than one system, highlighting the interconnectivity of the body's functioning.
plants can’t walk and animals can’t use the sun to make energy. agree/disagree? why?
Answer:
Agree, because plants cannot walk and have roots in the dirt to help them grow as well as photosynthsis. Animals can't do photosynthsis like plants can, animals have to eat to gain energy as well as sleeping.
Explanation:
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The African snail is a large snail that eats at least 500 different types of plants and is one of the top 100 invasive species in
world. What is the most likely way the snail was introduced into Florida?
A small animal was carrying one on its fur.
A boy brought a pair home as pets.
Two swam across the ocean.
One stuck to an airplane's wing.
Answer:
A boy brought a pair home as pets.
Explanation:
As small organisms will not have any major adaptations for moving quickly or flying to whole another country, hence it is not possible for the snail to travel from Africa to Florida with small animals. Getting stuck on the airplane wing is also not correct as they would have been wiped out by the wind pressure or might have not be able to survive. Hence, the most logical explanation for the snail to get transported to Florida is by a boy who might have brought them as a pet.
what kind of problems will we face if our body had no muscles
Answer:
musculer system is important part of our body. Muscles hold our bones together and helps them to move.
so if we don’t have muscles in our body, we won’t be able to move. we won’t be able to open and close our mouth. eyes etc. we can’t move our any body part.
no smile, no cry, and even we would not be able to breathe.
Explanation:
If short is recessive to tall, provide the symbol representation and the phenotype for each of the genotype for this trait.
Answer:
Genotype can be described as the genetic constitution present in an organism. Phenotype can be described as the physical characteristics which appear in an organism.
The following symbol representation and phenotypes might arise as a result of these genotypes:
A) homozygous dominant: The symbol representation will be TT, the phenotype will be tall plants.
B) Heterozygous: The symbol representation will be Tt, the phenotype will be tall plants.
C) Homozygous recessive: The symbol representation will be tt, the phenotype will be short plants.
Where is genetic information stored within cells? Genetic information is stored in the Question 1 options: nucleus as DNA molecules mitochondria as ATP. nucleus as ATP. mitochondria as DNA.
I'd say maybe Nucleus as DNA molecules.
Lmk if you got it right!
The genetic information stored should be a nucleus.
Genetic information related to cells:It is the basic building block for all kinds of living things. It gives the structure for the body, takes in nutrients from food, converts those nutrients into energy. Also, Most DNA should be located in the cell nucleus however, a small amount of DNA could also be found in the mitochondria. So here the genetic information should be the nucleus.
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Remy is smoking too closely to a building that manufactures fertilizer. When he puts out his cigarette near the hazardous waste, it sparks a fire because the fertilizer is flammable. What kind of hazard did the chemical waste cause?
The chemical waste from the fertilizer manufacturing plant caused a fire hazard in this scenario.
Flammability: The fact that the chemical waste from the fertilizer manufacturing plant caught fire when Remy put out his cigarette indicates that the waste is flammable. Flammable materials are substances that can easily ignite and sustain combustion when exposed to a heat source or open flame.
Ignition Source: Remy's cigarette butt, acting as an ignition source, was sufficient to trigger a fire in the presence of the flammable chemical waste.
Fire Hazard: The term "fire hazard" refers to the potential for a fire to occur due to the presence of materials that can easily catch fire or support combustion. In this case, the chemical waste from the fertilizer plant posed a fire hazard, and its ignition led to a fire.
It's important to handle and dispose of flammable materials and chemical waste in a safe and regulated manner to prevent such incidents and minimize the risk of fires.
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In the natural carbon cycle, the ocean influences climate by controlling CO2 levels primarily through ________________ and _______________.
Answer:
In the natural carbon cycle, the ocean influences climate by controlling CO2 levels primarily through biological activity and massive geological events.
Explanation:
Carbon flows in an interchange across each reservoir called the carbon cycle, which has gradual and rapid components. Any cycle shift which moves carbon from one reservoir places more carbon in another reservoirs.Changes that bring carbon dioxide into the environment contribute to higher Earth temperatures.
The carbon cycle appears to keep the balance over the long term that prohibits all Earth's carbon from atmospheric entry or being deposited entirely in rocks. That equilibrium helps to keep the temperature on Earth fairly stable, just like a thermostat.
How are cells like little
Rooms and how are they different?
Answer:
Robert Hooke was the first person to examine a slice of cork under a microscope. He saw little boxes or rooms and hence, gave the name cells to the structure. He called them cells because their structure was similar to small rooms which were called cells by the monks. Hence, cells are similar to little rooms in the structure.
However, there are many differences between the two as cells are living things but little rooms are non- living things. Each cell comprises of the same organelles whereas little rooms might not have the same components.
Gabriela recently moved to a city in Florida that is prone to severe weather. Help Gabriela prepare for impending storms by identifying the
conditions that lead to each type of severe weather event.
I believe that this is the answer
Answer:
see image
Explanation:
What is the study of thermodynamics?
Thermodynamics is the study of heat flow.
a p e x
The study of heat flow. Therefore option A is correct.
Thermodynamics is the scientific study of the relationship between heat and energy transfer within a system.
It explores the principles that govern the conversion of energy and the transfer of heat between different substances.
Thermodynamics delves into how thermal energy flows from a higher-temperature region to a lower-temperature region and how it can be harnessed to perform work.
This field of study is crucial for understanding the behavior of matter and energy, as well as for designing and analyzing various processes and systems, such as engines, power plants, and refrigeration systems.
Thermodynamics is foundational to physics and engineering and has broad applications in numerous scientific and technological areas.
Therefore option A is correct.
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Your question is incomplete, but most probably your full question was.
What is the study of thermodynamics?
A. The study of heat flow
B. The study of the nucleus
C. The study of electric fields
D. The study of organic matter
What are nucleobases?
A.harmful substances found in the environment
B.nitrogen molecules that create the DNA sequence
C.special and unique enzymes used in DNA replication
D.genetic information that is passed down to offspring
Answer:
B
Explanation:
Nucleobases, also known as nitrogenous bases or often simply bases, are nitrogen-containing biological compounds that form nucleosides, which in turn are components of nucleotides, with all of these monomers constituting the basic building blocks of nucleic acids.
ABO blood grouping of humans is an example of co-dominance. Homozygotes (IAIA and 1815) express either the A or the B
phenotype. Heterozygotes (1215) express both phenotypes equally and the IAB individual has blood type AB. Blood type O is
the result of the genotype 1°1°: this blood type is considered the recessive trait and is the recessive allele for blood type.
Consider the genetic cross for blood type of these two parents. The father is type A and the mother is type B. Both have the
recessive allele for blood type 0. What is the probability that these parents will have offspring with type A blood?
red flowered plant and white flouvared lant is an ayamole
Answer:
In ABO blood grouping of humans, when the genotype that determines the type of blood contains the recessive O gene in the parents, a father with a blood type A and a mother with a type B will have a 25% chance of having a offspring with type A blood.
Explanation:
Blood type is determined by the presence or absence of surface antigens A and B.
Type A contains antigen A and its genotype can be A | A or A | O. Type B contains the B antigen, whose genotype can be B | B or B | O. Blood type AB contains both antigens and a single genotypic expression A | B Type O blood lacks surface antigens.In the case raised, the parents, type A (A | O) and B (B | O) will have an offspring:
Alleles A O
B A|B B|O
O A|A O|O
This shows that the chances of having a offspring with a blood type A is 25%.
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Answer:
25%
Explanation:
i jus know
Energy ______ takes place within cells
Answer: Respiration
Explanation:
Respiration is the process of chemical energy stored in food which occurs through various enzyme controlled reactions. Some of the energy generated is stored as adenosine triphosphate (ATP) Hence, chemical energy from food is converted to chemical energy in the cell which the cell stores as ATP
Question 5 (4 points)
Match the description on the right with the force on the left.
Question 5 options:
A non-contact force that is generated from moving charges.
A force that requires physical contact between objects.
A non-contact force that is generated between charged objects.
A non-contact force that exists between objects with mass.
1.
Magnetic
2.
Electrical
3.
Gravitational
4.
Contact
The clear explanation for the forces mentioned in the question given below
Explanation:
1.A non-contact force that is generated between charged objects is known as "Magnetic force" eg: train tracks, new roller coaster, a compass, motor.
2.A non-contact force that is generated from moving charges is known "Electrical force". eg: Electric charge in a bulb.
3. A non-contact force that exists between objects with mass is known as "Gravitational force". eg: The force that causes apple to fall down from trees, The force thatt makes us to walk instad of floating.
4.A force that requires physical contact between objects is known as "Contact force". eg: moving a chair or table across a room, kicking a ball
13
In a kidney machine, protein molecules are not lost from the blood
How is loss of protein prevented?
A
B
C
D
Membranes prevent protein molecules diffusing out of the blood.
Proteins are actively transported back into the blood.
Proteins do not enter the kidney machine.
The dialysis fluid contains protein, so there is no diffusion gradient.
Answer: (a) Membranes prevent protein molecules diffusing out of the blood.
Gel electrophoresis is often used in forensics. Look at the gel on the right. From the evidence DNA, which individual matches the DNA evidence left at the crime scene?
Answer:
Suspect #2 matches the evidence.
Explanation:
Gel Electrophoresis can be described as a molecular biology technique which is used to separate DNA, RNA and proteins based on their molecular sizes. Usually the different samples of the DNA are compared to a standard sample to see which of the suspected samples matches with the standard one.
In the diagram above, the bands from the gel electrophoresis show that the suspect 2 has the most similarities with the standard DNA sequence taken from the crime scene. Hence, he might be the culprit.
Gel electrophoresis is a technique used in forensic science to compare DNA samples by separating DNA fragments according to size. DNA is loaded into an agarose gel and subjected to an electric field, allowing smaller fragments to move faster towards the positive electrode. Stained bands showing DNA fragments are compared to identify matching DNA profiles.
Explanation:Gel electrophoresis is a powerful technique in forensic science for analyzing DNA samples. When a DNA sample from a crime scene is compared to samples from individuals, the process involves several steps. First, DNA is extracted from bodily fluids such as blood, semen, or saliva. The extracted DNA is treated with restriction enzymes and amplified using the Polymerase Chain Reaction (PCR). This mixture of DNA fragments and restriction enzymes is loaded into wells on an agarose gel, and an electric current is applied. The DNA moves towards the positive side of the gel since DNA molecules are negatively charged due to their phosphate backbone. Smaller DNA fragments move more rapidly through the gel matrix and will be located further towards the positive electrode, while larger fragments will migrate more slowly and be closer to the wells.
After electrophoresis, bands are stained using a DNA-specific dye like ethidium bromide to visualize the DNA segments. The pattern of bands is what constitutes a DNA fingerprint, with each band representing DNA fragments of varying sizes. The individual whose DNA pattern matches that of the evidence left at the crime scene is considered to have a matching DNA profile. The DNA patterns are analyzed by comparing the position and size of bands. Typically, a DNA ladder containing fragments of known sizes is used as a reference to determine the size of the DNA fragments present in the sample.
100 points and brainliest
Name and Describe the 3 Classifications of Protists and What are three different ways that you can describe a protist?
Answer:
Protists are classified into three categories on the basis of their mode nutrition. They are as under.
1) Algae : Algae is made up of single cell having true nucleus. They are found in those places where water is present. They make their own food like plants.
2) Protozoa : Protozoa is also made of one cell and have true nucleus. They feed on another animals.
3) Fungus like protists : It is a type of protists which feeds on dead bodies of plants and animals.
1) Protists are organisms which are made up of single cell.
2) Protists are eukaryotes i. e. having true nucleus.
3) Protist have some characteristics of animals, plants and fungus.
Which statement best describes the energy in this
system?
A.The potential energy in the system is greatest at X.
B.The kinetic energy in the system is greatest at X.
C.Total energy in the system decreases as the ball moves from X to Y.
D.Total energy in the system increases as the ball moves from X to Y.
Answer:
A-The potential energy in the system is greatest at X.
Explanation:
The potential energy in the system is greatest at X.
Answer:
A-The potential energy in the system is greatest at X.
explain
The potential energy in the system is greatest at X.
the cause of the phases of the moon is a cycle that is close to blank long
28 days
It takes our Moon about 28 days to complete one cycle of phases (from new Moon to new Moon).
Answer:
28 days
Explanation:
When too much water has accumulated
Answer:
Too much water accumulation leads to a condition called as water intoxication.
Explanation:
Drinking too much water leads to a condition called water intoxication or water poisoning. This happens because the concentration of water becomes such abundant in a person's body that it dilutes the concentration of electrolytes like sodium in the blood. This causes a disruption in the functioning of the brain hence leading to the death of the person. Various such scenarios have been observed in athletes drinking too much water.
The scarcity of food affect the size of a finch population
Which of the following best describes the total amount of carbon in the system made up of the Earth and its atmosphere?
Answer:
I have 2 that I think best describes the the total amount so... 1. burning of fossil fuels 2. mineral carbon
Answer:
It remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere
Explanation:
Carbon cycles through the Earth's spheres. Since the Earth is made up of the atmosphere, hydrosphere, geosphere, and biosphere, carbon can move within or between any two spheres in a cycle. It is transferred but remains in Earth's spheres, so the total amount of carbon remains constant regardless of the changes it goes through. These spheres are the atmosphere, hydrosphere, geosphere, and biosphere. Carbon can be transferred from one of these spheres to another, but the total amount of carbon remains constant because no carbon is gained or lost as it changes location throughout the system. Therefore, it remains constant because carbon cycles through the atmosphere, hydrosphere, biosphere, and geosphere.
Pictured above is the brain viewed at midline at 3 months of age. Differentiate between the functions of the thalamus and the pons of a human brain.
A) The pons plays a key role in sleep and dreaming. The thalamus assists with the storage of long term memories.
B) The pons controls our reactions out of fear and how we react to certain stimuli. The thalamus helps us maintain a constant body temperature.
C) The pons is responsible for relaying messages between the two hemispheres of the brain.
The thalamus plays a role in consciousness and sleep.
D) The pons helps relay messages between the cortex and the cerebellum. The thalamus directs different sensory information to the different parts and lobes of the cortex.
Answer:
The correct statement is Option D) The pons helps relay messages between the cortex and the cerebellum. The thalamus directs different sensory information to the different parts and lobes of the cortex.
Explanation:
The thalamus is a part of brain which is present between two parts of the brain i. e. cerebral cortex and the midbrain. The function of thalamus is to carry relay motor signals to cerebral cortex while pons is a part of hind brain that carry relay signals from the forebrain to the cerebellum.
Answer:
I think option D) is the answer just took the test on usa test prep.
• What do homeobox genes code for in animals?
Homeobox genes contain a particular DNA sequence that provides instructions for making a string of 60 protein building blocks (amino acids) known as the homeodomain. Most homeodomain-containing proteins act as transcription factors, which means they bind to and control the activity of other genes.
How far could you speed walk in 10 minutes based on your speed for the 10 m trial show your work?