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Which of these REQUIRES active transport in order to cross the plasma membrane? A. a sodium ion moving AGAINST the concentration gradient B. a hydrogen molecule moving WITH the concentration gradient C.
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21 votes
Which of these REQUIRES active

transport in order to cross the plasma
membrane?
A. a sodium ion moving AGAINST the concentration gradient
B. a hydrogen molecule moving WITH the concentration
gradient
C. an oxygen molecule moving WITH the concentration
gradient
D. a carbon dioxide molecule moving WITH the concentration
gradient

User Robert Williams
by
4.5k points

2 Answers

5 votes
The answer would be c
User Hans Bambel
by
4.5k points
6 votes

Answer: I think it might be A. a sodium ion moving AGAINST the concentration gradient

Step-by-step explanation:

User MichaC
by
4.6k points
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