BIOL 2420 Lecture Exam 2 Review

An organic compound gains an electron from another molecule. The organic compound

• has lost a hydrogen atom.

• has been oxidized.

• has become more positively charged.

• has been reduced.

The molecule that an enzyme acts upon is known as its

• product

• substrate

• coenzyme

• catalyst

Sulfanilamide is an antimicrobial drug that mimics the shape of an important substrate for a particular bacterial enzyme, thereby inhibiting the enzyme. This type of inhibition is known as

• allosteric inhibition.

• feedback inhibition.

• competitive inhibition.

• noncompetitive inhibition.

An apoenzyme requires ________ to be active.

• an allosteric inhibitor

• substrate

• a cofactor

• a holoenzyme

Which of the following metabolic processes is commonly used to identify bacteria?

• lipid synthesis

• pentose phosphate pathway products

• carbohydrate fermentation

• Citric acid cycle products

• lipid catabolism

Reactions in which atoms are rearranged within a molecule are catalyzed by

• isomerases

• transferases

• ligases

• polymerases

• hydrolases

Hydrolases are generally involved in ________ reactions.

• anabolic

• catabolic

• both anabolic and catabolic

• neither anabolic nor catabolic

• oxidation-reduction

Reactions involving ligases are typically ________ reactions.

• catabolic

• anabolic

• both anabolic and catabolic

• neither anabolic nor catabolic

• exergonic

Which of the following metabolic pathways is found only in prokaryotes?

• Non-cyclic photophosphorylation

• Embden-Meyerhof-Parnas (EMP)

• Calvin-Benson

• Entner-Doudoroff (ED)

• Pentose phosphate pathway

A bacterial genome is typically

• A bacterial genome is typically

• a single circular DNA molecule.

• a single linear piece of DNA.

• a linear RNA molecule.

• multiple circular DNA molecules.