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Marysya12 [62]
3 years ago
14

Which substance can enter a cell by diffusion without having to be digested

Biology
1 answer:
Sedaia [141]3 years ago
4 0
Glucose would diffuse into the cell.Protein<span> would diffuse out of the cell.</span>Carbon dioxide<span> would diffuse out of the cell.</span>
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Explain character displacement, and provide an example.
nata0808 [166]

A line of indirect evidence of competition comes from the comparison between closely related species, whose population can be allopatric (geographically separated) or sympatric (geographically superimposed). In some cases, the allopatric populations of these species are morphologically similar and use similar resources. On the other hand, sympatric population, which are supposed to compete for resources, have body structures and use different resources. The displacement of characters is the tendency to have more divergent characteristics in sympatric populations of two species than in allopatric populations of the same two species.

An example of character displacement is the variation in size between populations of galapagos finches. Some of its populations are allopatric ( they live separately) and others are sympatric ( they live together). Peak size distributions they vary according to whether they are sympatric or allopatric.  They look more alike when they are allopathic than when they are sympatric. That is, the peak size character moves when species enter competition.

6 0
3 years ago
On an electrophoresis gel, band B is closer to the positive end of the gel than is band A. Which of the following statements is
ZanzabumX [31]

Answer:

D. The DNA in B is more positively charged than the DNA in A.​

D. The DNA in B is more positively charged than the DNA in A.​

Explanation:

4 0
2 years ago
Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall. They s
ololo11 [35]

Answer:

C.The two species do not breed in the same area, so they are reproductively isolated by allopatry.

Explanation:

Allopatry means that these two species are geographically separated during the breeding season, so they are reproductively isolated.

Allopatric speciation is a form of speciation (creation of new species) that occurs as a result of geographic isolation. This means that a part of population becomes physically separated from the initial main population. There is no gene flow between these two populations and as a result the two populations  reach a high level  of genetic divergence. They can no longer interbreed which means they become two different species (speciation).

7 0
2 years ago
Which of the following could be discovered by studying the gross anatomy of a cadaver?
snow_lady [41]
<span>Studying the gross anatomy of a cadaver can show an individual the total physiology of a human. By dissecting a cadaver or deceased human, you can study the nervous and cardiovascular system as well as the organs and other internal tissues. For example, muscle origin and insertions on bone, blood supply to the muscle and nervous stimulation of the muscle can be studied. Other areas that can be seen are the location of major organs in the thorax and the blood supply to each of them. The discovery of how the cadaver died can also bee seen during the dissection in many cases.</span>
6 0
3 years ago
What is one way a permanent
MArishka [77]

Answer:

The answer is most likely B, however it could be C. Here is why:

Explanation:

permanent magnets can usually withstand being dropped a couple of times. However, if you drop it enough and with enough force, it is possible to make it loose magnetism. If you do not have this kind of patience, it is more effective (an much more fun) to hit it really hard with a hammer.

    When something is magnetized, all of the atoms are facing a different direction. When you drop it/throw it/hit it with enough force, it causes the atoms to spin, so they are not all facing the same way.

6 0
3 years ago
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