27) Which of the following could NOT set up an electrochemical gradient? A) H+ p

Question

27) Which of the following could NOT set up an electrochemical gradient?

A) H+ pump in plants

B) Electron transport chain

C) Channel proteins

D) Na+/K+ pump in animals

28) An animal cell placed in a hyperosmotic solution will:

A) Swell and lyse

B) Maintain a stable volume

C) Lose water and shrivel

D) Impossible to predict

29) The ________ energy of an electrochemical gradient across a membrane could be harnessed to _____.

A) Potential; move a second solute against its concentration gradient

B) Potential; move a vesicle along a cytoskeletal track

C) Kinetic; accomplish energy coupling

D) Kinetic; synthesize ATP

6 of 9

30) What best describes an ion channel?

A) Carrier protein

B) Transmembrane protein

C) Glycoprotein involved in cell-cell recognition

D) Enzyme

E) Peripheral protein

31) The totality of an organism’s chemical reactions is called:

A) Catabolism

B) Energy

C) Anabolism

D) Equilibrium

E) Metabolism

32) Which is an example of potential energy?

A) A boulder rolling down a hill

B) Thermal energy

C) Energy available for release in a chemical reaction

D) Wind passing over the surface of the ocean and creating waves

E) The motion of a cheetah running after its prey

Explanation / Answer

27. C) channel proteins

28. C) lose water and shrivel

29. D) Kinetic, synthesize ATP

30. B) transmembrane protein

31. E) metabolism

32. C) Energy available for release in a chemical reaction.

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