Exam 4: Physiology of Cells

Which of the following is not a passive transport process?

A molecule or other agent that alters enzyme function by changing the enzyme's shape is called a(n):

Which is not true about the sodium and potassium pump?

Active transport processes that use protein carrier molecules,or pumps,do not use cellular energy but rely instead on concentration gradients.

The "lock-and-key" model of enzyme function explains how the protein and substrate join.

Match each term with its description. -compound that carries high energy electrons to the electron transport system

Because of the phospholipid cell membrane,water cannot diffuse into or out of the cell.

When molecules pass directly through the cell membrane,the process is called filtration.

Anne ran in the Boston marathon.During the race,she lost a large amount of hypotonic sweat.Would you expect her cells to shrink,swell,or remain the same? Explain your answer.

Explain why the electron transport system is necessary to get all of the usable energy out of the processes of glycolysis and the citric acid cycle.

For an enzyme to function,the coenzyme must fit into the enzyme's active site like a key fits into a lock.

Match each term with its description. -end product of glycolysis

Diffusion is a form of filtration that results in the separation of small and large solute particles.

Two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through.When dynamic equilibrium is reached,there will be:

NaCl would move through the cell membrane in which direction?

A side effect of exocytosis is the addition of new membrane material to the cell membrane.