Answer:
The nitrogen cycle could not exist without the presence of nitrogen-fixing microorganisms.
Explanation:
As part of the biogeochemical cycles that occur in nature, the nitrogen cycle involves all the organic and non-organic processes that allow the incorporation of this element into the organism of living beings.
Although nitrogen is abundant in nature, in gaseous form, living beings cannot take advantage of it, because they lack the ability to convert this gas into organic nitrogen. Nitrogen-fixing microorganisms -such as bacteria in the soil- turn inorganic nitrogen into organic, that incorporates plants.
Nitrogen-fixing bacteria exist in both soil and plant roots. They are responsible for the conversion of atmospheric nitrogen and ammonium, the product of the degradation of organic matter, into nitrites and nitrates that assimilate the plants. Herbivorous animals obtain this nitrogen from vegetables, and carnivores from them.
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Answer: Bacteria
Explanation:
Read the statement:
When Mendel crossed a purple-flowered pea plant with a white-flowered pea plant, the offspring were always X. When Mendel crossed the offspring with each other, the distribution was about Y purple and Z white. The more experiments Mendel did with pea plants, the closer they approached these percentages.
Which option correctly replaces X, Y, and Z in the statement?
a. X: purple
Y: 25%
Z: 75%
b. X: white
Y: 25%
Z: 75%
c. X: white
Y: 75%
Z: 25%
d. X: purple
Y: 75%
Z: 25%
Answer:
X: purple
Y: 75%
Z: 25%
Explanation: Hope this helps!
The correct option is b: X:white Y: 25% Z:75%
Let's analyze the statement step by step:
"When Mendel crossed a purple-flowered pea plant with a white-flowered pea plant, the offspring were always X." - This suggests that the trait expressed in the offspring is consistent and always of a particular color. So, X is the color of the offspring."When Mendel crossed the offspring with each other, the distribution was about Y purple and Z white." - This indicates the ratio of purple to white in the second generation. Y and Z represent the percentages of purple and white, respectively."The more experiments Mendel did with pea plants, the closer they approached these percentages." - This implies that through repeated experiments, Mendel observed a consistent trend in the distribution approaching the mentioned percentages.Now, let's match the options:
a. X: purple, Y: 25%, Z: 75% - This does not match the consistent color mentioned in the first part of the statement.b. X: white, Y: 25%, Z: 75% - This matches the consistent color mentioned in the first part of the statement.c. X: white, Y: 75%, Z: 25% - This does not match the consistent color mentioned in the first part of the statement.d. X: purple, Y: 75%, Z: 25% - This does not match the consistent color mentioned in the first part of the statement.Therefore, the correct option is b.
Which of the following represents a dominant trait?
Select one:
a. a
b. d
c. b
d. A
Answer:
d. A
Explanation:
you can determine allales by either recesive (lowercase) or dominant ( uppercase)
Answer: d). A
Explanation: Alleles occur either as recessive or dominant genes. Recessive genes are usually written in lower case while dominant genes are usually written in upper case. for instance, the dominant gene for tallness can be written as T.
HELP FAST !! 20 p. When matter evaporates or boils, both processes end up with the same result.
changing to a gaseous state. What is the term used for both processes?
A. steaming
B. vaporization
C. clouds
Answer:
B. Vaporizing
Explanation:
A theoretical protein, blue2, is coded for by the blu2 gene. This protein codes for a blue pigment used by the organism to protect it from damaging UV rays from sunlight. The enzyme alterase binding to the blu2 operator halts transcription of blue2. A blu2 operator mutation causes a conformational change that does not allow alterase to bind to operator.
What kind of gene regulation of blue2 is being used?
Positive
Negative
Secondary
Splicing
Negative regulation
Explanation:
The enzymes involved are:
blue 2 protein
enzyme alterase binds to blue 2 operator alters blue 2 transcription.
Mutation in blue 2 operator detest alterase activity.
In negative regulation the alterase ( repressor) binds to the blue gene operator and prevents the transcription of blue gene and hence altering the blue 2 protein production.
After mutation in blue 2 gene operator due to confirmational change alterase does not bind to operator and hence blue 2 gene gets transcribe when transcription factors bind to promoter.
In what phase to replicates chromosomes finish moving towards the poles?
Replicated chromosomes finish moving towards the poles in Anaphase stage of Mitosis.
Explanation:
The mitosis is the process of cell division producing daughter cells which are identical and has the same number of chromosomes in each as the parent cell.
There are four stages of mitosis, including, Prophase, the initial phase where the cell is being prepared for the mitosis. Next is the Metaphase, second phase, where the replication or duplication of chromosome takes place.
Third in line is the Anaphase, where the duplicated chromosome is pulled on the sides by the centrosome spindle fibres which let the chromosome move and this phase ends with the finishing of shift or move.
Then is the Telophase, fourth and the last phase, when the division has been completed with the two daughter cell out of one parent cell with identical results.
An increase number of mitochondria in muscle cells would enable an individual to obtain energy from cellular respiration at a faster rate.True or false and if false why?
Answer:
there is an association between the number of mitochondria in muscle cells and energy production
Explanation:
Mitochondria generate energy by generating adenosine triphosphate (ATP), which is referred to as the "molecular unit of currency" of the cell since this molecule provides energy for diverse cellular processes
What are some enzymes that break down and build up Dna
Answer:
In this answer I will talk about which enzymes break down and accumulate DNA
Explanation:
Enzymes that contain DNA live the name of:
- Polymerase
- Premium
- Helicasa
- Ligasa
- Topoisomerase
describe three adaptation you would expect In an organism that is active during the daytime and two adaptations you might Expect to find In organisms that are active at night
Explanation:
three adaptations in the day would be a good sense of hearing,camoflouge and a good sense of vision
two adaptations for nocturnal animals would be an adaptation to see in the dark. another adaptation would be burrowing or a way to hide during the day as to not be caught.
The layers of Earth's atmosphere are separated by which of the following?
cloud bands
changes in temperature trends
sudden differences in air pressure
Layers in Earth's atmosphere are defined as regions in which _____.
air mixes together
planes cruise due to jet stream currents
the temperature of the air remains the same
In which layers does the temperature of the atmosphere increase with altitude? Select all that apply.
troposphere
stratosphere
mesosphere
thermosphere
exosphere
Answer:
tempature
weather
strartophere
decreases
increases
Explanation:
bc i got it right
What are the Contents of a vaccine
Answer:
Explanation:The content of a vaccine includes; antigens,stabilizes,antibiotics, adjuvants,preservatives and also residual by products from
the production process
which behavior is considered a courteous way to deal with a client
Answer: Several behaviors can be considered as cuts when dealing with a client.
Explanation:
Human beings are social beings, we like to interact with each other, but often these interactions do not always occur in the right way. There are several jobs where people have to have an approach with the client and treat them in the best way, which is part of providing a good service.
Various behaviors are considered as cuts when dealing with a client, one of them is being efficient and friendly. When a client enters the person must show a friendly attitude, which allows the client to express what they need. Efficiency must also be shown at the time of performing the work since a person who is occupying a job is because he is capable of performing the work.
Another behavior that can be considered as cuts when dealing with a client is to listen actively. Many people make the mistake of not actively listening to their customers, which can often cause problems when providing a product or service, or simply listen to the customer's complaints. It is important to make the client feel that he is heard, that what he has to say is important.
Keeping calm in any situation is also a way of being courteous to the client. Each person is different, so not all of them will have the same mood at that time. It is important to remain calm and be professional when dealing with a client. It is not correct to respond inappropriately if the client does so, professionalism must be above all. If a client behaves in a certain way, reporting it might be a good idea, but not reaching the point of using the same tone or way of acting that the client used at the time.
Precipitation is less likely to occur under
Precipitation occurs because of the water present in the atmosphere.It occurs when the water droplets fall from the sky out of the air saturated with water vapor.
Explanation:
Various forms of perception are rainfall,snow, sleet, ice pellets dew, frost, and hail.
Precipitation is less likely to occur because of
Less moisture in the atmosphere.Downward movement of the air in the atmosphere Increase in carbon dioxide and other green house gases.Human induced changes like deforestation,overgrazing are some other causes of low rainfall
In the family tree below, people with the recessive trait of attached earlobes are shaded gray
In the family tree below, people with the recessive trait of attached earlobes are shaded gray.
What must be true about the person labeled "A"?
A. It is a male with at least one dominant allele.
B. It is a male with two dominant alleles.
C. It is a female with at least one dominant allele.
D. It is a female with two dominant alleles.
Answer:Its a male with atleast one dominant allele.
Option A.
Explanation:The gene for the attached earlobe is recessive while the gene for the free earlobes is dominant. In the phylogenetic tree, we can see that both the father and mother aren't having attached earlobes. So both of them are having atleast one dominant allele which makes them have free earlobe.
In the F1 offsprings, one of the female and a male is having free earlobes. So both of them have atleast one dominant allele. The 2nd female is having an attached earlobe. So both the recessive allele have come form one parent each. So both of them are heterozygous.
Thus, the male marked as A atleast have one dominant allele. He can be a homozygous dominant, but the probability is 25%.
which condition(s) below must be met for a population to be in Hardy Weinberg?
1. no random mating occurs
2. natural selection occurring
3. mutation occurs
4. population is large
5. individuals and their genes immigrate and emigrate.
I just don't understand this question. Does it want the 5 requirements or somethings else.
Answer: For a population to be in Hardy Weinberg, option 1, 2 , 4 and 5 are very crucial
Explanation: Hardy Weinberg principle of population (equilibrium) focuses on variation in the gene of an individual, this principle states that allele and genotype frequency in a population will remain constant if there are no disturbing factors like; Natural selection, mutation, non random mating etc.
This means that for a genotype of a population to be maintained there should be no selection of mating individuals, mutation should not occur, there should be random mating, and they should remain in the same environment.. This will ensure that individual produced in next generation looks like their parents.
ASAP - BRAINLIEST TO BEST ANSWER:
Preserving the habitat of an endangered species is important to its protection. Little brown bats live in a wide range of habitats. They live in forests and mountains, and even form colonies in buildings, attics, and other artificial structures. What are three ways humans could be affecting their habitat?
Answer:
Preserving the habitat of an endangered species is important to its protection. Little brown bats live in a wide range of habitats. They live in forests and mountains, and even form colonies in buildings, attics, and other artificial structures that humans could be affecting. Sadly, many bats are under severe threat from increasing human pressure. Habitat loss, climate change, roost destruction, disease, deforestation, guano mining, disturbance and persecution, and increasing numbers of wind farms are all causes of bats declining because of us.
Explanation:
I hope this helps! :}
Answer:
Preserving endangered species' habitats is crucial for their protection. Little brown bats inhabit various environments, including forests, mountains, and artificial structures. However, they face severe threats from human activities such as habitat loss, climate change, roost destruction, disease, deforestation, guano mining, disturbance, persecution, and wind farms.
Explanation:
What was changed in the "Viscosity" lab?
A. The temperature of honey by heating it in water
B. The consistency of honey by adding sugar to it
C. The volume of honey
D. The temperature of honey by laying it out in the sun
The following options have changed viscosity of honey
A. The temperature of honey by heating it in water
B. The consistency of honey by adding sugar to it
D. The temperature of honey by laying it out in the sun
Explanation:
Let us define viscosity, it is defined as a liquid is being resistant to move freely caused by the internal friction in the liquid. There are several factors which change viscosity by affecting the internal friction. Those factors could be an external force, temperature, adding substances like sugar can change the consistency, etcFor liquids, the temperature has an inverse relation with the viscosity of the liquid. Liquids will have greater viscosity when there is a low temperature. Here, when you heat the honey the viscosity reduces as temperature increases.: The temperature of honey by heating it in water
~Sarah Robinsen
How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes
Answer:
This answer is in my own words.
The other is from Plato.
Explanation:
Own Words: It first was thought that archaea and eukaryotes were closer than bacteria and eukaryotes. In present day we now have proof that archaea and bacteria helped form complex cells.
Plato answer: It was originally thought that archaea and eukaryotes were more closely related than bacteria and eukaryotes. However, evidence now supports the fact that both archaea and bacteria were responsible for the formation of more complex cells.
For C.E.R.
Is meiosis just a longer process of mitosis ?
Answer:
yes! Meiosis has a longer chain than mitosis.
Explanation:
Answer:
Meiosis does have a longer chain than mitosis.
Explanation
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Sociable weavers are a species of bird found in Africa. All males of a colony work together to build a large nest that can house several hundred birds. This is an example of
Answer:
The characteristics of the Sociable weavers of living in colonies and cooperating for the construction of nests is an example of gregariousness, a type of intraspecific relationship.
Explanation:
Intraspecific relationships are those interactions that occur between individuals of the same species, characterized by the influence that each of them has with their similarities.
Gregariousness -as observed in Sociable weavers- is an intraspecific relationship that leads individuals to live in communities or colonies, contributing to the care, protection and feeding of their members.
Other gregarious species are bees and ants.
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Sociable weavers are a species of bird found in Africa. All males of a colony work together to build a large nest that can house several hundred birds. This is an example of
✔ cooperation
.
Typically, peregrine falcons hunt medium-sized birds, but they will also eat small mammals, reptiles, and insects. This is an example of
✔ predation
.
Male deer, called bucks, head-butt each other to defend their breeding territory and female mates. This is an example of
✔ competition
.
A scientist used radiation to change the mutation rates of a population of bugs. He then measured how many generations it took for bugs with different mutation rates to adapt to a new background by natural selection. On the graph below, the x-axis represents the mutation rate, and the y-axis represents the number of generations it took for the bugs to reach an average fitness of 90%.
Using evidence from the graph explain how adaptation occurred more quickly as the mutation rate increased.
For this experiment, artificial selection is made by the scientists where traits of benefit are made to be present in the gene by high mutation rate so that the adaptability increases.
Explanation:
Natural selection is a process by which a organism with beneficial traits survive and reproduce in large numbers. They adapt to the environment very quickly and pass on these traits to its progeny which are at the better survival zone.
The mutations for the beneficial traits in certain genes caused the bugs to adapt to their environment well. When mated, they pass on the traits in every generation. It is also said that those organisms who did not get mutated eventually died.
The faster the mutation rate, the faster the mutated bugs with beneficial traits will appear in each generation.
From the graph it can be said that those bugs who could not bear the mutation they died and hence did not appear in the next generation only those bugs who could cope up the environment survived.
Answer:
B. Adaptation occurred more quickly as the mutation rate increased. However, this effect was relatively small for mutation rates above 1%.
Explanation:
Explanation: Quicker adaptation is indicated by fewer generations needed to reach a certain average fitness. The bugs with a 0.1% mutation rate took over 500 generations to adapt, while the bugs with a 10% mutation rate only took about 50 generations to adapt. In general, greater mutation rates correspond to quicker adaptation. However, there is a relatively small difference between a 1% mutation rate and a 10% mutation rate, and no measurable difference at all between 6% and 10%.
Describe Dmitri Ivanovski’sExperiment
Explanation:
Using a filtering method for the isolation of bacteria, Ivanovsky discovered that filtered sap from diseased plants could transfer the infection to healthy plants. Further researches led Ivanovsky to conclude that the causal agent was an exceedingly small parasitic microorganism that was invisible even under great magnification and that could permeate porcelain filters designed to trap ordinary bacteria.
Final answer:
Dmitri Ivanovski's experiment in 1892 crucially demonstrated that the infectious agent causing tobacco mosaic disease could pass through filters that trapped bacteria, leading to the foundation of virology and the subsequent identification of viruses.
Explanation:
The experiment conducted by Dmitri Ivanovski in 1892 marks a significant milestone in the field of virology. In his groundbreaking experiment, Ivanovski worked on the tobacco mosaic disease, previously believed to be caused by bacteria. He observed that the infectious agent could pass through a porcelain filter designed to trap bacteria. To his surprise, when he applied the filtered sap to healthy tobacco plants, they too became infected. This led Ivanovski to conclude that the agent causing the disease was smaller than bacteria and not visible under the microscope. His work laid the foundation for the discovery of viruses, although he did not identify the infectious agent as a non-living particle, which is how viruses are now classified.
would squidward's children still be considered purebreds?
Answer:
no
Explanation:
they would carry a recessive gene from the mother
Answer:
It depends who did he get down with
Explanation:
This is a very weird question why am I answering it lol
The age of one rock layer compared to the age of another rock layer is its
o comparative age
O relative age
actual age
o conformity
Answer:
Explanation:o relative page
Answer:
Relative age
Explanation:
The way I used to think of relatives as like a family. The bottom layer is the oldest and it works it way up. Then I relate faults and things like that as well.
What is directly responsible for matter moving and changing in an animal's
body?
O
A. Fuel
B. Water
O
C. Energy
O
D. Sun
Answer:
The correct option is C) Energy
Explanation:
Energy can be described as the source which is required by every living matter to move and for various metabolic processes. Energy can change from one form to another depending on the metabolic activities which occur on an organism.
Energy is introduced in the environment when photosynthetic organisms make food by using light energy from the sun. The light energy is converted into the bonds present in the glucose molecules. When consumers eat the plants they convert this energy into ATP for carrying out various metabolic processes.
if we accept genetically modified foods in our homes and use other drugs that affect out performance in life, how is using steroids or testosterone any different
Answer:
Genetically modified foods and other drugs are approved by scientists and organizations such as FDA before including them in the market. They interact with our biochemical system but still do not have adverse effects like steroids or testosterone might have.
Anabolic steroids can perform many permanent side effects like damage to the gonads or other types of liver diseases. Considering the adverse effects these steroids can cause, it is not advised to use them at homes.
a mutation in a triplet code that ends up coding for the same amino acid is referred to as a silent mutation. in what sense is it silent?
A silent mutation is a change in the DNA sequence that does not alter the amino acid sequence of a protein, maintaining the protein's functionality. This occurs due to the genetic code's redundancy, where various codons can encode the same amino acid. These mutations are undetectable without genetic sequencing.
Explanation:A silent mutation occurs when a change in the nucleotide sequence of DNA results in a new codon, but that codon still encodes the same amino acid. This redundancy in the genetic code allows for such mutations to be "silent," as they do not alter the amino acid sequence of the protein being produced. Hence, the mutation is considered silent in the sense that it has no observable effect on the protein's function or the organism's phenotype.
Because most amino acids are encoded by multiple codons, a change, particularly in the third base of a codon, often does not change the encoded amino acid. For instance, if the TCT codon for serine is mutated to TCC, TCA, or TCG, serine is still encoded, making the mutation silent. Such mutations are only detectable through sequencing of the gene or its mRNA, as they cause no change in the protein product.
What is the term that scientists use when comparing the properties of solids, liquids and gases?
The term scientists use when comparing the properties of solids, liquids, and gases is States of Matter. These states are characterized by different properties such as shape and volume, and molecule behavior.
Explanation:The term scientists use when comparing the properties of solids, liquids and gases is called States of Matter. These three states are the most common and are characterized by different properties. Solids have a definite shape and volume, liquids only have a definite volume, and gases have no definite shape or volume. Their molecules behave differently, which accounts for their different physical properties. For example, in a solid, the molecules are tightly packed together and vibrate around a fixed point, while in a gas, the molecules have more freedom and move around at high speeds.
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Use the drop-down menus to select the correct answers to complete the paragraph.
The building blocks of matter are called
A substance made up of the same kind of atoms is called a(n)
elements lose particles. This makes them
The most appropriate and correct answers to complete each paragraph respectively are:
Atoms. Element. Unstable. Radioactive.1. An atom refers to the smallest, indivisible unit made up of matter and forms all chemical elements.
This ultimately implies that, the fundamental building blocks of matter are called: atoms.
2. A substance that is made up of the same kind of atoms is called an: element. Some examples of an element are:
Chlorine (Cl).Hydrogen (H).Iron (Fe).Sodium (Na).Calcium (Ca).3. Unstable elements lose particles because their nucleus have an excess of internal energy (neutron or proton). Thus, this makes them radioactive.
Some examples of an unstable element are:
Bismuth-209TritiumXenon.Find more information: https://brainly.com/question/18214726
Answer:
✔ atoms
✔ element
✔ Unstable
✔ radioactive
Explanation:
I got it right on my assignment
(b)
Describe how the antibody gene could be isolated from an animal cell and introduced into
a crop plant such as maize.
Answer:
Firstly, we can use a DNA probe to identify the particular antibody gene that we are looking for.
We can cut the gene at specific restriction sites by using specific restriction enzymes.
The same restriction enzymes should be used to cut the DNA from the specific site in the maize plant.
The gene can be introduced and ligated in the maize genome by using DNA ligase.
The recombinant DNA can be places in the Maize cop plant.
Which explanation most accurately describes convection within the ocean? Question 2 options: Water near the equator is warmer because of direct sunlight. Water near the poles is cold and dense. Warm water moves toward the poles and cold water moves toward the equator. The Sun heats the surface of the water. The deeper the water, the colder it becomes. Warm water sinks and cold water rises. Earth's mantle heats water at the bottom of the ocean, causing the water to rise toward the surface. The air at the surface cools the water, causing the water to sink. Water near the ocean's surface is heated by air, causing it to sink toward the bottom of the ocean. As the water cools it sinks, causing it to rise back toward the surface.
Answer:
A
Explanation:
Water near the equator is warmer because of direct sunlight. Water near the poles is cold and dense. Warm water moves toward the poles and cold water moves toward the equator.
(Just took the test if this helps)
Water near the equator is warmer because of direct sunlight. Water near the poles is cold and dense. Warm water moves toward the poles and cold water moves toward the equator. Option (A) is correct.
What do you mean by convection ?Heat is transferred by convection, which is the large-scale movement of molecules inside gases and liquids. Conduction is used to move heat from the object to the fluid initially, but fluid motion is responsible for the bulk of the heat transfer.
Convection is an important phenomenon that aids in temperature circulation and lessens abrupt temperature changes by redistributing energy from hotter to colder regions of the Earth.
In our weather, convection throughout the atmosphere is frequently seen. As the Earth's surface warms from the sun, for instance, the air above it warms and rises. If the circumstances permit, this air may continue to climb while cooling and generating cumulus clouds.
Therefore, Option (A) is correct regarding flow of heat.
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