Exam 6: Cell Function

Which of the following is not true of enzymes?

Phagocytosis is an example of:

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.

The sodium-potassium pump in the cell membrane moves potassium into the cell and sodium out of the cell.

For osmosis to occur there must be at least one impermeable solute present.

One of the advantages of active transport is that it can move materials up, or against, its concentration gradient.

The engulfing of microbes by white blood cells is an example of:

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

Briefly explain the process of glycolysis. What energy molecules are produced, and how many of each are produced?

A solution may be defined as various solutes dissolved in a solvent.

Match the name of each enzyme with its function or description. -Add water to a molecule without splitting it

Which of the following is not true of the exocytosis?

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

The physical movement of water and solutes through a membrane when a hydrostatic pressure gradient exists is called filtration.

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

A saline solution that contains a higher concentration of salt than a red blood cell would be:

Allosteric effectors activate or inactivate enzymes by changing the shape of the enzyme's active site.

Protein anabolism is a rarely used cellular activity.

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

Match each term with its description. -Process also called the Krebs cycle