Biology Test Biology Biochemistry & Metabolism 3

Question 1

The electron transport chain is located on the:

Accepted Answer

Inner mitochondrial membrane

Answer

Outer mitochondrial membrane

Answer

Mitochondrial matrix

Answer

Cytoplasm

Question 2

Which molecule is the final electron acceptor in aerobic respiration?

Accepted Answer

Oxygen

Answer

Carbon dioxide

Answer

NAD+

Answer

ADP

Question 3

Allosteric regulation of an enzyme involves:

Accepted Answer

Binding of a regulator at a site other than the active site

Answer

Binding of a molecule at the active site

Answer

Covalent modification of the substrate

Answer

Permanent denaturation

Question 4

During fermentation in human muscle cells, pyruvate is converted to:

Accepted Answer

Lactate

Answer

Ethanol

Answer

Acetyl-CoA

Answer

Citrate

Question 5

Phospholipids are amphipathic molecules, meaning they have:

Accepted Answer

Both hydrophilic and hydrophobic regions

Answer

Two phosphate groups

Answer

Only nonpolar tails

Answer

Positive and negative charges on the same tail

Question 6

Which metabolic pathway is shared by both aerobic and anaerobic respiration?

Accepted Answer

Glycolysis

Answer

Krebs cycle

Answer

Oxidative phosphorylation

Answer

Electron transport chain