BIOCHEM 132: Chapter 12 Quiz

Plants are considered _____.

• chemoheterotrophs

• chemoautotrophs

• photoautotrophs

• photoheterotrophs

• none of these

Energy is generated during _____, the breakdown of larger molecules into smaller while energy is consumed during _____, the building of larger molecules from smaller ones.

• none of these

• reduction reactions; oxidation reactions

• hydrolysis reactions; condensation reactions

• catabolic reactions; anabolic reactions

• autotrophic reactions; heterotrophic reactions

Digestion of food utilizes enzymes that catalyze _____ reactions.

• oxidative

• hydrolysis

• reduction

• condensation

• group transfer

Which of the following is used to move lipids around the bloodstream?

• micelles

• liposomes

• lipoproteins

• liposaccharides

• liposuctions

The bulk of triacylglycerols in the human body are stored in _____.

• adipocytes

• muscle cells

• lipoproteins

• liver cells

• nerve cells

The _____ stores glucose as glycogen and converts excess glucose to _____.

• liver; fatty acids

• muscle; amino acids

• none of these

• brain; energy

• adipose tissue; fatty acids

Amino acids can be converted to _____.

• carbohydrates

• all of these

• peptides

• nucleotides

• fatty acids

Which of the following is mobilized for energy use by a phosphorolysis reaction, not a hydrolysis?

• triacylglycerols

• polynucleotides

• glycogen

• cholesterol esters

• protein

Degradation of proteins within a cell can occur within the _____ or by use of _____.

• endoplasmic reticulum; a proteasome

• lysosome; a proteasome

• endoplasmic reticulum; protease enzymes chymotrypsin and trypsin

• mitochondria; ubiquitin

• Golgi apparatus; protease enzymes chymotrypsin and trypsin

A reaction that results in the loss of electrons from a molecule is a(n) _____.

• phosphorolysis

• oxidation

• ligation

• reduction

• hydrolysis