Question

Which of the following accurately describes an example of how materials can move across the cell membrane through active transport?

A protein acts as a channel to allow large, hydrophilic molecules to diffuse across the cell membrane.

A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.

The cell membrane folds to surround a substance and bring the substance inside the cell during exocytosis.

Water moves by osmosis from higher concentration to lower concentration by passing through proteins called aquaporins.

Answer 1

i think is B

Answer 2

@paki

Answer 3

@JoannaBlackwelder

Answer 4

i am agree with option B...

Answer 5

The only thing is that that option doesn't mention going across a cell membrane...

Answer 6

Just the concentration gradient.

Answer 7

I'm not sure though.

Answer 8

so what do you think? @JoannaBlackwelder

Answer 9

@aryandecoolest

Answer 10

I am between A and B.

Answer 11

@midhun.madhu1987

Answer 12

@IMStuck @ImNotGoodAtMath

Answer 13

Its A