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SES 626-Metabolism > Exam 2 Review Questions > Flashcards

Exam 2 Review Questions Flashcards

1
Q

What are the potential fates of pyruvate formed during both anaerobic and aerobic glycolysis

A

Ethanol
Lactate
Acetyl CoA

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2
Q

During the dehydrogenation of malate into oxaloacetate what happens to NAD+ what does it become?

A

It is reduced and becomes NADH and H+

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3
Q

What is the fate of the NADH formed during the Malate Dehydrogenase Step of the Kreb’s Cycle

A

It is used to synthesize ATP in the ETC

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4
Q

Which molecule is the mitochondrial electron acceptor in the glycerol phosphate shuttle?

A

FAD

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5
Q

Which enzyme catalyzes this reaction?

A

Malate Dehydrogenase

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6
Q

Which molecule is formed during the conversion of Succinate to Fumarate?

A

FAD+ becomes FADH

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7
Q

What is a by product formed during the conversion of oxaloacetate and acetyl co A to Citrate?

A

Coenzyme A

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8
Q

What is the role of oxygen during aerobic glucose metabolism

A

it is the final electron acceptor in the electron transport chain

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9
Q

The following reaction is involved in which of the following pathways?

     Glucose-1-phosphate + UTP → UDP-glucose +PPi
A

Glycogenesis

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10
Q

Which of the following enzymes is not involved in gluconeogenesis?

phosphoenolpyruvate carboxykinase
phosphofructokinase
triosephosphate isomerase
malate dehydrogenase

A

Phosphofructokinase

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11
Q

Which enzyme catalyzes the following reaction?

Oxaloacetate + GTP → Phosphoenolpyruvate + CO2 + GDP

A

phosphoenolpyruvate carboxykinase

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12
Q

Place the following metabolites of glycogenesis in the correct order.

        I.     glucose-1-phosphate

        II.    glycogen

        III.   glucose

        IV.   glucose-6-phosphate

        V.    UDP-glucose
A

Glucose
Glucose 6 Phosphate
Glucose 1 Phosphate
UDP- Glucose
Glycogen

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13
Q

Starting with glucose, place the following enzymes of glycogenesis in the correct order.

          I.     branching enzyme

        II.    glycogen synthase

        III.   hexokinase

        IV.   UDP-glucose pyrophosphorylase

        V.    phosphoglucomutase
A

Hexokinase
Phosphoglucomutase
UDP-glucose pyrophosphorylase
Glycogen Synthase
Branching Enzyme

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14
Q

Place the following intermediates of glycogenolysis in the correct order.

         I.     glucose-1-phosphate

        II.    glycogen

        III.   glucose

        IV.   glucose-6-phosphate
A

Glycogen
Glucose 1 Phosphate
Glucose 6 Phosphate
Glucose

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15
Q

Starting with glycogen, place the following enzymes of glycogenolysis in the correct order.

A

Glycogen Phosphorylase
Phosphoglucomutase
Glucose 6 phosphatase

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16
Q

Which enzyme catalyzes the following reaction?

A

Glycerol Phosphate Dehydrogenase

17
Q

Which of the following is NOT one of the fates of an amino acid carbon skeleton?

acetyl CoA
urea
α-ketoglutarate
oxaloacetate

A

urea

SES 626-Metabolism (14 decks)

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