[BSN] LE3 Games Biochemistry

Which of the following statements about mitochondria is correct?

• The outer membrane of mitochondria is not permeable to any molecules.

• The interior region of a mitochondrion is the intermembrane space.

• The folds of the outer membrane are called cristae.

• Mitochondria are located within the cellular cytosol.

Which of the following diagrams gives the correct identities and arrangement of the structural subunits in coenzyme A?

• 
• 
• 
• 

The missing structural subunit in the following diagram for flavin adenine dinucleotide is

• phosphate

• ribose

• ribitol

• deoxyribose

The correct notation for the reduced form of nicotinamide adenine dinucleotide is

• NAD+

• NAD

• NADH

• NADH2

In which of the following pairs of metabolic carboxylate ions are both members of the pair derivatives of succinic acid?

• malate, fumarate

• oxaloacetate, citrate

• fumarate, alpha-KG

• alpha-KG, citrate

Which of the following is a correct general description of the reaction that occurs in the first step of the citric acid cycle?

• C2 + C4 → C6

• C3 + C3 → C6

• C2 + C2 + C2 → C6

• C4 + C4 → C6 + C2

In which two steps of the citric acid cycle are molecules of carbon dioxide produced?

• steps two and five

• steps three and five

• steps three and four

• steps four and six

How many NADH and FADH2 molecules are produced, respectively, during one turn of the citric acid cycle?

• two, two

• three, one

• one, three

• two, three

In which of the following listings of citric acid cycle intermediates are the compounds listed in the order in which they are encountered in a turn of the cycle?

• citrate, oxaloacetate, fumarate

• Isocitrate, succinyl CoA, oxaloacetate

• fumarate, malate, alpha-ketoglutarate

• oxaloacetate, succinate, citrate

At which complex c in the electron transport chain does O2 participate?

• Complex I

• Complex II

• Complex III

• Complex IV