Question

3. How do most unicellular organisms absorb
oxygen?
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Answer 1

Answer:

Explanation:

Unicellular organisms breathe through direct diffusion via the cell membrane. ... oxygen diffuses in and carbondioxide diffuse out. Cellular respiration takes place in each and every living cell. ... Instead of the actual process of breathing, oxygen simply enters in their bodies by simple diffusion.

Answer 2

Explanation:

Because they are so small , they do not have the organs , pores entryways to breath like multicellular organism .

Unicellular organisms breathe through direct diffusion via the cell membrane .oxygen diffuses in and carbon dioxide diffuses out . cellular respiration take place in each and every living cell .

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