Exam 1: The Cell: A Microcosm of Life

Which organelle prevents proteins that have not reached their normal tertiary or quaternary structure from reaching the cell surface?

Which organelle is capable of performing both fission and fusion?

Which nitrogenous base is unique to RNA?

Allosteric regulation of enzymes is carried out by modulators,other proteins that bind to the enzyme to inhibit its activity.

The primary mechanism by which gene expression is modified by bioactive factors in food appears to be ____.

Cyclic AMP activates which enzymes?

What is the major route for ATP production?

Describe the process of apoptosis in relation to the life span of the cell.

In muscle cells,creatine phosphate is used to replenish which substance?

Encoded within the nuclear DNA of each cell is ____.

The organelle responsible for production of most of the metabolic energy (ATP)is the ____.

Polysomes function to transcribe mRNA into proteins.

Most of the metabolic energy produced in cells is made in the mitochondria.

Phosphorylation of a molecule is generally accomplished by transferring the terminal phosphate group from which substance?

What is released when nutrient molecules are oxidized?

Match each description to one of the following terms. -the tendency of a compound to donate and receive electrons

One trigger of apoptosis is ____.

An increase in the concentration of a substrate will increase the rate of the enzyme-catalyzed reaction.

The fluid portion of the cytoplasmic matrix does not contain ____.

The various components within a cell (e.g.,mitochondria)are not "free-floating" in the cytosol,but rather,are held in place by the cytoskeleton.