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3 years ago

Why is it important that root hair cells have high ion concentration?

1 answer:

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Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.

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In a hypothetical situation, a certain species of flea feeds only on pronghorn antelopes. In thewestern United States, pronghorn

eimsori [14]

Answer:

D) sympatric speciation and habitat isolation

Explanation:

Sympatric isolation is a form of evolutionary process whereby different species from an ancestral origin evolve within the same geographical environment as a result of reproductive isolation.

Habitat isolation is a form of reproductive isolation which occurs when two populations of a species inhabiting overlapping habitats become unable to interbreed with each other.

Reproductive isolation (habitat isolation) that occurs in the fleas is as a result of the new species becoming separate from it's ancestral species which feed only on pronghorn antelopes, although both species can still be found in the same geographical location (rangeland). The new species now have preference for cattle blood, and so are now found on cattle.

In the situation of the two new species of flea that would evolve, it can be said to an example of sympatric speciation and habitat isolation, since the host mammal is assumed to be their habitat and both the cattle and pronghorns often associate with one another in the same open rangeland.

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3 years ago

Radiation can affect human tissue.

Schach [20]

X rays and gamma rays

8 0

3 years ago

Read 2 more answers

What is a karyotype? a. a system of classifying cell nuclei b. a unique combination of chromosomes found in a gamete c. the set

Sergio039 [100]

Answer:

Option (d).

Explanation:

Karyotype may be defined as the process of the determining of the chromosome complement of the individual organism. The complete set of an organism's chromosome can be determined by karyotype.

The karyotype displays the each and every pair of homologous chromosome. The chromosomes are organised according to their shape and size. The abnormal chromosome can easily be determined by the karyotype.

Thus, the correct answer is option (d).

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4 years ago

What are the advantages and disadvantages of using renewable and nonrenewable energy resources? Use evidence from the lesson and

timofeeve [1]

Answer:

The answer to this question is given below in this explanation section.

Explanation:

Advantages of renewable energy resources:

Using renewable energy over fossil fuels has a number of advantages.Here are some of the top benefits of growing green.

Renewable energy won't run out:

Renewable energy technologies use resource straight from the environment to generate power.These energy sources include sunshine,wind,tides,and biomass,to name some of the more popular options.

Maintenance requirements are lower:

In most cases,renewable energy technologies require less overall maintenance than generators that use traditional fuel sources.This is because generating technology like solar panels and wind.

Renewables save money:

Using renewable energy can help you save money long term.Not only will you save on maintenance costs,but on operating cost as well.When you are using a technology but generates power from from the sun wind team natural processes.

Renewable energy has numerous health and environmental benefits:

Renewable energy resources emit little to no greenhouse gases or pollutants into the air.

Renewable lower reliance on foreign energy sources:

With renewable energy technologies you can produce energy locally.The more renewable energy you are using for power needs.

Disadvantages of renewable energy:

Higher upfront cost:

You can save money by using renewable energy the technologies are typically more expensive upfront by traditional energy generators.

Intermittency:

Through renewable energy resources are available around the world many of these resources are not available year around.

Storage capabilities:

Because of this intermittency of some renewable energy resources there a high need of energy storage.

Geographic limitations:

The united states has a diverse geography with varying climates topographies vegetations and more.

6 0

3 years ago

Read 2 more answers

What is the correct chromosomal condition at prometaphase of mitosis?

alina1380 [7]

I believe the answer is B (C). Mitosis is the process of cell division that takes place in the somatic cells where a parent cells divides in two diploid daughter cells. Prometaphase is the second phase of mitosis, the process separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During this stage, the physical barrier that enclose the nucleus (the nuclear envelop ) breaks.

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3 years ago