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Zarrin [17]
3 years ago
7

Which of the following statements describes a benefit of most cells being small? A. Small cells move more quickly than larger ce

lls. OB. Small cells have a smaller surface-to-volume ratio than larger cells. OC. Small cells move more slowly than larger cells. OD. Small cells have a greater surface-to-volume ratio than larger cells SUBMIT PREVIOUSbibbbbb​
Biology
1 answer:
antoniya [11.8K]3 years ago
5 0

Answer:

A

Explanation:

Cells moving faster is a benefit because it can get air and blood to its area faster

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How specifies that are separated for a river, rocks, mountains, forest ; can at some point not being able to interbreed anymore
Allushta [10]

Answer:

Species separated by a physical barrier for a long time, suffer allopatric speciation, so they can not interbreed anymore.

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background giving place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flow, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

Vicariance is the geographical separation of an original population into two or more new groups. Discontinuities in the physical environment like rivers, mountains, water, etc., are physical barriers that impede genetic flow between the separated groups.

The process of allopatric speciation involves different steps:  

  1. The emergence of the barrier.  
  2. Interruption in the genetic interchange
  3. The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  4. Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.  
  5. Prezigotic isolation mechanisms favored by selection once occurs a secondary contact between the new species in formation.

8 0
2 years ago
Why is oxygen important in the electron transport pathway and atp synthesis?
kiruha [24]

Answer:

NADH and FADH2 carry electrons to specialized cell membranes,where they are harvested to create ATP.Once the electrons are used, they become depleted and must be removed from the body. Oxygen is essential for this task. Used electrons bind with oxygen; this molecules eventually bind with hydrogen to form water

Explanation:

I hope it helps

5 0
3 years ago
I will make brainliest if u answer this quistion
WINSTONCH [101]
Maybe if you show the question people could answer
8 0
3 years ago
Drag the 10 insects into the breeding alcoves on the left side of the Gizmo.
wel

Answer:

there are 7 breeding pairs

Explanation:

7 0
3 years ago
True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false.
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Answer: TRUE

Explanation:

7 0
2 years ago
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