The process of molecules going against a concentration gradient that requires energy and a membrane protein is termed
A) active transport.
B) active diffusion.
C) facilitated diffusion.
D) simple diffusion.
E) osmosis.
Correct Answer:
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Q70: Which statement about cell membranes is true?
A)
Q71: The process of molecules moving from a
Q72: The process of molecules going from a
Q73: If an animal cell is living in
Q74: Ribosomes
A) read DNA.
B) make energy.
C) make proteins.
D)
Q76: Osmosis refers to the diffusion of
A) small
Q77: Water crosses a semipermeable membrane to dilute
Q78: An important purpose of a cell wall
Q79: Phospholipids are
A) hydrophilic.
B) hydrophobic.
C) neutral.
D) partly hydrophilic
Q80: The hydrophilic head of a phospholipid is
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