CPC CPC Biochemistry & Biological Chemistry 2

Question 1

Competitive inhibition of an enzyme is characterized by:

Accepted Answer

Unchanged Vmax and increased apparent Km

Answer

Decreased Vmax and unchanged Km

Answer

Decreased Vmax and decreased Km

Answer

Unchanged Km and unchanged Vmax

Question 2

Which reaction is catalyzed by DNA polymerase during DNA replication?

Accepted Answer

Adding nucleotides to the 3'-OH end of a growing strand

Answer

Unwinding the double helix

Answer

Removing RNA primers

Answer

Ligating Okazaki fragments

Question 3

In the context of biochemistry, the term 'reducing sugar' refers to a sugar that:

Accepted Answer

Contains a free anomeric hydroxyl group capable of acting as a reducing agent

Answer

Reduces its own molecular weight during metabolism

Answer

Can only be metabolized under anaerobic conditions

Answer

Has fewer than 6 carbons

Question 4

Which process describes the flow of genetic information according to the central dogma of molecular biology?

Accepted Answer

DNA → RNA → Protein

Answer

Protein → RNA → DNA

Answer

RNA → DNA → Protein

Answer

Protein → DNA → RNA

Question 5

Beta-oxidation of fatty acids occurs in which cellular location and produces which primary products?

Accepted Answer

Mitochondrial matrix; acetyl-CoA, NADH, and FADH2

Answer

Cytoplasm; glucose and CO2

Answer

Peroxisomes only; formate and H2O2

Answer

Endoplasmic reticulum; fatty aldehydes

Question 6

Which of the following amino acids contains a sulfur atom in its side chain and forms disulfide bonds?

Accepted Answer

Cysteine

Answer

Methionine

Answer

Serine

Answer

Threonine