Why are chromosomes arranged in homologous pairs in meiosis

I am converted by bacteria into ammonia,

from there some things can absorb me, I am further converted by bacteria intonitrates and nitrites, plants assimilate left are further converted into nitrogen gas that is released into the atmosphere where I am breathed in.

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Fixation is the first step in the process of making nitrogen usable by plants. Here bacteria change nitrogen into ammonium. Nitrification - This is the process by which ammonium gets changed into nitrates by bacteria. Nitrates are what the plants can then absorb.

The symptoms that Monique will probably experience not being able to see what's to her left.

A collection of an aberrant cells or mass that develops as tumor. A tumor may not always indicate malignancy. Several tumors are benign (not cancerous).

Throughout the body, tumors can be developed. Bone, tissues, glands, skin, and organs can all be impacted. Tumors also are referred to as neoplasms.

Tumors can be:

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Answer:

pioneer species

Explanation:

The female true pelvis is bounded by the pubic arch, ischia, sacrum, and coccyx. It is a bony structure that is located below the false pelvis and above the pelvic floor.

The true pelvis defines the pelvic inlet, which is the opening at the top of the pelvis that connects it to the abdominal cavity. This inlet is wider in females than in males, and it is oval in shape. The female true pelvis is also inferior to the pelvic brim, which is the line that runs along the top of the pelvic bone. This means that the true pelvis is the portion of the pelvis that is closer to the perineum, where the genitals are located. The true pelvis is superior to the pelvic floor, which is a muscular layer that supports the organs in the pelvis, including the bladder, uterus, and rectum. In summary, the female true pelvis is a bony structure that is bounded by the pubic arch, ischia, sacrum, and coccyx, and it defines the pelvic inlet. It is located below the false pelvis and above the pelvic floor, and it is inferior to the pelvic brim.

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Answer:

The warm air over the land surface is rising

The frequency of triplet-repeat expansion would rise in the presence of a defective DNA polymerase that boosts strand slippage.

A DNA polymerase belongs to a group of enzymes that catalyzing the synthesis of Dna strands using nucleoside triphosphates, which are the basic building blocks of DNA. These enzymes, which are necessary for DNA replication, typically function in groups to split one single original DNA duplex into two identical DNA duplexes. One nucleotide at the a time, DNA polymerase inserts nucleotides to a DNA strand's three primary (3')-end. DNA polymerases are needed to duplicate a cell's DNA each time it divides in order to send a replica of the original DNA molecule to each daughter cell. This is how genetic information is transmitted down through the generations.

These enzymes help the chemical process to happen.

Deoxynucleoside Triphosphate + DNAn ⇌ Pyrophosphate + DNAn+1.

A dual DNA molecule is duplicated to two identical DNA molecules during the dna replication Process, which is carried out by DNA polymerase. With the help of the polymerase chain reaction, generally known as PCR, scientists have been able to duplicate DNA molecules inside test tubes. DNA polymerase alpha (Pol ), DNA polymerase delta (Pol ), & DNA polymerase epsilon (Pol ) are at least 3 DNA polymerases needed in eukaryotic genome replication (1). By creating an RNA/DNA hybrid primer, Pol starts the synthesis of both the leading & lagging strands of DNA.

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Answer:

No fertilization occurs.

Explanation:

No zygote is formed if the the number of chromosomes within the cells did not change or remain the same i.e. diploid because for the production of zygote, half number of chromosomes are required in both male and female sex cells or gametes. If the chromosomes are half in both gametes so they fuse with each other forming zygote having diploid cell so we can conclude that for the happening of fertilization process, half number of chromosomes in gametes is necessary if not, no fertilization occurs.

Answer:

If an organism has a beneficial trait, they have a higher chance of survival, and if they can survive they can reproduce too.

Example: Speckled moths camouflage with the bark of trees and are not easily seen by predators. Black moths do not camouflage with the bark of trees and are easily seen by predators, therefore the black moths are eaten. Because the black moths have been eaten they cannot reproduce and pass on the trait for black wings to their offspring, but the speckled moths are able to reproduce because they survived and are able to pass on the speckled wing trait to their offspring.

Answer:

? what is the problem i don't see anything

Explanation:

Answer:

A no answer is euglena and d is bacteria b and I cannot understand this picture

Answer:

The correct option is False

Explanation:

During preparation of some reagents, that involves the use of harmful constituents like concentrated acids, students (high school students) may be prevented from entering the chemical preparation/storage area until the preparation is completed and the area is area deemed safe for students. Students may also be prevented from entering the preparation/storage area if a student does not wear the appropriate protective wear during preparation of reagents or during "trial-runs" of reagents. For example, diethyl ether has a choking smell and if a student doesn't wear a face mask, the student may be seriously affected (health-wise) by this choking substance which is hazardous when inhaled in high concentration.

You are not allowed to enter the chemical preparation/storage area any time you need to get an item. Access to this area is restricted to authorized personnel only. This is because the chemicals stored in this area can be dangerous if not handled properly. Hence the statement is False.

To enter the chemical preparation/storage area, you must first obtain permission from the lab supervisor. You will then be given a safety briefing on the hazards of the chemicals in the area and the proper procedures for handling them. Once you have been briefed, you will be allowed to enter the area, but only for the purpose of getting the item you need.

It is important to follow all safety procedures when entering the chemical preparation/storage area. This includes wearing the appropriate personal protective equipment (PPE), such as gloves, goggles, and a lab coat. You should also be careful not to spill any chemicals, and you should dispose of any hazardous waste properly.

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Answer:

The answers are :-

1.What is the term that refers to the change that happens in a living organism because of a stimulus?

c) stimulus

2. The best example of an organism's response to a stimulus.

d) dog barks when there are fireworks.

3. The process by which living organisms stay the same.

b) homeostasis

4.How does a one-celled organism grow?

c) It divides

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Answer:

Explanation:

Iwi

Answer: Eukaryotic

Explanation: do I have to?

Answer:

parietal pleura

Explanation:

The pleura includes two thin layers of tissue that protect and cushion the lungs. The inner layer (visceral pleura) wraps around the lungs and is stuck so tightly to the lungs that it cannot be peeled off. The outer layer (parietal pleura) lines the inside of the chest wall.

The significant change brought by these advances was the development of agriculture and the shift from a nomadic lifestyle to settled civilizations.

This allowed humans to produce a reliable food supply and establish permanent settlements, leading to the development of complex societies, specialization of labor, and the growth of cities.

agriculture is a process by which human beings produce food and sell them at a rate so that every people can buy it and eat it to get energy and nutrition for the body and for their growth and development in agriculture amount of crop is produced of single type.

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Answer: light brown

Explanation:

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Answer:

Trying to use the Scientific Method.

Explanation:

These two students are trying to make a experiment on these pigs they are raising. The reason why it is more like to attract the scientific method is because the steps were doing were based on it. (For example, they both might form a question and try different types of things to raise a pig)

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Answer:

Not all humans belong to the same trophic level. This is due to the dietary choices each human makes.Next come the omnivores that eat a mixture of plants and herbivores. That's where humans rank, with a trophic level of 2.2.

Explanation:

Many humans are omnivores, meaning they consume both plant and animal material. Thus, they may be on the third or even fourth trophic level. For example, if you consume beef (cows are herbivores), you are a part of the third trophic level. If you were to eat salmon though, salmon consume other fish, and this would mean you are a tertiary consumer on the fourth trophic level.

Vegans and vegetarians who do not consume fish or meat of any kind are primary consumers. They belong on the second trophic level.

Answer:-So beacuse the size of the cells in different organisms does not vary an elephant won't have larger cells than a rat. It has more number of cells as compared to the number of cells in a rat. But the size of the cells are same..!

The question of whether cells are bigger in larger mammals than in smaller ones — think of an elephant's liver cell compared with a liver cell from a mouse — is usually answered by saying that larger mammals don't typically have bigger cells, they just have more of them.

Animals can vary enormously in size, but they're alike in at least one way. The individual cells that compose all of their bodies--from shrews to people to dinosaurs--are roughly the same size. Big animals just have many more cells than little animals.

Cell is the basic unit of life. Yes, the cells of ant and elephant are same. All organisms are made up of cells and they are of different sizes and shapes. Size of cell does not make any difference between the ant and elephant but its the number of cells which makes such differences in their body sizes.

Answer:

50% of the moon is illuminated during a third quarter phase

Answer:

50% I hope this answers question

We can see here that the experiment was not specified, using skim milk in an experiment may behave differently in certain experiments, particularly those that involve changes in pH, temperature, or other environmental factors that can affect the chemical properties of the milk.

An experiment is a scientific procedure or method carried out to test a hypothesis, explore a phenomenon, or investigate the properties or behavior of a system or substance. In an experiment, a researcher manipulates one or more variables while keeping others constant to observe and measure the effect on the outcome.

Conducting the experiment with cream will depend on the behavior of the cream. The behavior of cream in an experiment may differ from that of whole milk due to its higher fat content.

Conducting the experiment with water; water, on the other hand, is a polar molecule that readily dissolves other polar substances but is not able to form a colloid like milk.

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The skin cells that the most likely candidates for such a culture are called basal cells.

Harvesting skin grafts most frequently occurs on the inner thigh and buttocks since these areas are out of sight and hence not as cosmetically significant. To do a skin graft, a surgeon will remove a healthy section of skin from one part of the body and transfer it to another. The basal cells are located at the base of the epidermis, the skin's outermost layer. Skin renewal is facilitated by basal cells. As new skin cells are made, they push out older cells, which then die and are sloughed off at the skin's surface. A split-thickness skin graft is the most common type of skin graft procedure that removes the epidermis and the dermis from the donor area (the dermis).

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Answer:

d.

Explanation:

Active transport requires additional energy, any kinds of diffusion are not active transport.

Endocytosis  is an example of active transport.

The statement that is true about the ocean waves is that Water molecules move forward in the direction of the wind.

Option C

The basic definition of the waves is that a wave is a disturbance along a medium which transfers energy. In the case of the ocean, we know that the energy is transferred as the water is in motion from one point to the other.

The movement of the waves of the ocean is always driven by the wind that is blowing in the sea and as such the waves that is generated in the sea would move in the direction of the wind.

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Answer:

An example of structural adaptation for reproduction with plants is c. Deep root systems.

Deep root systems are a structural adaptation that allows plants to access water and nutrients from deeper layers of soil, increasing their chances of survival in dry or nutrient-poor environments. These deep roots also allow the plant to establish itself firmly in the soil, increasing its chances of reproducing successfully.

Option a. Flexible stems, b. Spines development and d. Ballistic seed-dispersal are not structural adaptations related to reproduction, but other strategies that plants use to survive in different environments. Flexible stems allow plants to bend and sway in the wind without breaking, spines development protect plants from herbivores and Ballistic seed-dispersal is a way for plants to scatter their seeds away from the parent plant.

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Answer:

to support with eveidence or authority

Explanation:

Answer:

Corroborating information means to back it up or to give support to what the information is saying.

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Ecosystem services is an example of how nature contributes to the supply of clean water. Ecosystem services are benefits that people obtain from ecosystems. They are distinguished into four categories: provisioning, regulating, cultural, and supporting services.

Ecosystem services include the provision of clean air and water, the pollination of crops, the mitigation of natural disasters, and the provision of recreational opportunities. Nature provides a variety of ecosystem services that are essential to human well-being. The supply of clean water is an example of ecosystem services. The water we drink comes from rivers, lakes, and underground aquifers that are replenished by rain and snowmelt.

These freshwater ecosystems not only provide us with water but also with food, fiber, and recreation opportunities. That nature contributes to the supply of clean water is an example of ecosystem services. Ecosystem services are benefits that people obtain from ecosystems.

The supply of clean water is one such service provided by nature, and it is essential for human well-being. The water we drink comes from rivers, lakes, and underground aquifers that are replenished by rain and snowmelt. These freshwater ecosystems not only provide us with water but also with food, fiber, and recreation opportunities.

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Complete Question:

Part A: Identifying Variables

Read the following hypotheses and identify the variables.

If the number of cigarettes smoked increases, then the risk for lung cancer increases.

Independent variable: _______

Dependent variable: _______

If the number of sharks swimming in a coastal region increases, then the number of shark attacks on humans will also increase.

Independent variable: _______

Dependent variable: _______

If the amount of milk a person drinks increases, the strength of his or her bones will stay the same.

Independent variable: _______

Dependent variable: _______

Answer/Explanation:

Dependent variables are variables that is dependent on the independent variables. That is, it is the variable that changes as the independent variable changes.

Depedent variable is the main interest if a researcher. It is the variable that is measured in a research work.

In the above given hypotheses, the dependent and independent variables are shown below:

1. "risk for lung cancer" is dependent on the "number of cigarettes smoked".

"Risk for lung cancer" => dependent variable

Number of cigarettes => independent variable

2. "number of shark attacks on humans" is dependent on "number of sharks swimming".

Dependent variable => number of shark attacks on humans

Independent variable => number of sharks swimming

3. Dependent variable => strength of bone

Independent variable => amount of milk a person drinks

Answer:

Lab: Heart Rate  

Part A: Identifying Variables

The dependent variable happens as a result of values/changes associated with the independent variable.

Independent variable: number of cigarettes smoked

Dependent variable: risk for lung cancer

Independent variable: number of sharks swimming in a coastal region

Dependent variable: number of shark attacks on humans

Independent variable: amount of milk a person drinks

Dependent variable: the strength of his or her bones

Part B: Heart Rate

Hypothesis: If I hold my breath for 30 seconds, then my heart rate will

(choose 1) increase/decrease.

Independent variable: holding my breath

Dependent variable: heart rate

Part C:

The heart rate decreases because oxygen exchange in the lungs decreases.

This depends on what you chose for heart rate in the hypothesis. If you said the heart rate decreases after holding your breath, and the results showed the heart rate decreased, then the hypothesis is supported. If you said the heart rate decreases after holding your breath, and the results showed the heart rate increased, then you refuted the hypothesis.

Heart rate can change due to an increase or decrease in activity, moving positions such as sitting and standing, and emotions.

Example: Increase in activity—jumping jacks

Hypothesis: If I do five jumping jacks, then my heart rate will increase.

Test hypothesis. You can use the average resting heart rate from the previous experiment. If you do an experiment with an increase in physical activity like jumping jacks, then your data will reflect an increase in heart rate because the body requires more energy, which requires more oxygen, increasing the overall flow of blood in the body.

Support or refute the hypothesis based on the results. The hypothesis is supported if it aligns with the observed results. The hypothesis is refuted if the results don’t match the statement based on the variables.

Testing more than one variable at a time makes it difficult to interpret the results and support or refute the hypothesis. With one variable, the results can be associated with changes to that variable. To get the most reliable data to support or refute a hypothesis, an experiment should be completed several times to see if the results show the same trends.  

Explanation:

Penn Foster

Answer: A nonsense mutation leads to cystic fibrosis by the CFTR gene due to the the production of CFTR protein to stop prematurely. That will lead into a shorter and incomplete protein. That either quickly destroyed by the cell does does not work.

Explanation: Hope that helped :)