Welcome to the Quiz!
This quiz contains 9 questions from a mix of 1 subtopics.
Is active transport a passive or active process?
passive
active
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Active transport is the movement of molecules across a membrane, from a region of concentration to a region of concentration. This requires from respiration.
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In active transport, do particles move up or down a concentration gradient?
down
up
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Active transport involves proteins.
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What is the role of carrier proteins in active transport?
to use ATP to actively move molecules against their concentration gradient
to passively diffuse molecules across the membrane
to break down molecules into smaller components
to allow molecules to move freely in and out of the cell
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Which of the following is NOT a role of carrier proteins in active transport?
facilitating the movement of ions or molecules against their concentration gradient
breaking down molecules to release energy for transport
using energy from ATP hydrolysis to move molecules across the membrane
binding to specific molecules or ions to transport them across the membrane
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List three factors that affect the rate of active transport.
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Will active transport take place faster if there are more or less carrier proteins?
less carrier proteins
more carrier proteins
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Why does a higher rate of respiration increase the rate of active transport?
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