Biology Test Biology Biochemistry & Metabolism 2

Question 1

The Krebs cycle occurs in which part of the mitochondria?

Accepted Answer

Matrix

Answer

Outer membrane

Answer

Intermembrane space

Answer

Inner membrane

Question 2

Which type of bond links amino acids together in a protein?

Accepted Answer

Peptide bond

Answer

Glycosidic bond

Answer

Phosphodiester bond

Answer

Hydrogen bond

Question 3

Beta-oxidation is the metabolic process that breaks down:

Accepted Answer

Fatty acids

Answer

Carbohydrates

Answer

Proteins

Answer

Nucleic acids

Question 4

Competitive inhibition of an enzyme can be overcome by:

Accepted Answer

Increasing substrate concentration

Answer

Decreasing pH

Answer

Adding more inhibitor

Answer

Lowering temperature

Question 5

Which vitamin is a precursor to the coenzyme NAD+?

Accepted Answer

Vitamin B3 (Niacin)

Answer

Vitamin C

Answer

Vitamin D

Answer

Vitamin B12

Question 6

Gluconeogenesis is the metabolic pathway that synthesizes glucose from:

Accepted Answer

Non-carbohydrate precursors such as lactate and amino acids

Answer

Fatty acids only

Answer

Glycogen only

Answer

Pyruvate via glycolysis