Welcome to the Quiz!
This quiz contains 12 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 passively diffuse molecules across the membrane
to allow molecules to move freely in and out of the cell
to break down molecules into smaller components
to use ATP to actively move molecules against their concentration gradient
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Which of the following is NOT a role of carrier proteins in active transport?
using energy from ATP hydrolysis to move molecules across the membrane
breaking down molecules to release energy for transport
facilitating the movement of ions or molecules against their concentration gradient
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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Which of the following is a type of bulk transport?
simple diffusion
facilitated diffusion
exocytosis
osmosis
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Which type of bulk transport involves the intake of large particles into the cell?
endocytosis
exocytosis
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During endocytosis, the cell-surface membrane engulfs materials to form a .
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