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PIT_PIT [208]
2 years ago
6

The diagram is a model of one way that materials move across the cell membrane. Oxygen molecules are represented by two red circ

les. Carbon dioxide molecules are represented by a gray circle with two red circles attached. The left-hand side of the diagram shows the beginning concentrations of the two types of molecules. The right-hand side shows how the molecules have moved over time.
A.They move to an area with a lower oxygen concentration.



B.They become transport proteins in the cell membrane.



C.They merge with the cell membrane to form vacuoles.



D.They move to an area with a higher oxygen concentration.
Advanced Placement (AP)
2 answers:
SpyIntel [72]2 years ago
8 0

Answer:a

Explanation:

Ive done this and i remember it as a

Mashutka [201]2 years ago
4 0
This app is for school my guy
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