The Citric Acid Cycle

Question 1

is the third stage of biomolecule catabolism

Answer 1

The Citric Acid Cycle

Question 2

converts carbohydrates, lipids, and amino acids to carbon dioxide, water, and energy

Answer 2

The Citric Acid Cycle

Question 3

The Citric Acid Cycle is a sequence of enzyme-catalyzed processes that take place in the?

Answer 3

mitochondria

Question 4

When two carbons of acetyl CoA (CH3COSCoA) combine with an organic substrate that has four carbons to generate a six-carbon product, the citric acid cycle is?

Answer 4

initiated

Question 5

joins with a four-carbon molecule catalyzed by the enzyme citrate synthase,

Answer 5

acetyl

Question 6

releasing the group and forming a six-carbon molecule called citrate.

Answer 6

Oxaloacetate

Question 7

citrate is converted into its?

Answer 7

isomer

Question 8

citrate is converted into its isomer, isocitrate by the enzyme?

Answer 8

Aconotase

Question 9

isocitrate is oxidized and releases a molecule of carbon dioxide, leaving behind a five-carbon molecule?

Answer 9

α-ketoglutarate

Question 10

is a high-energy molecule similar to ATP, and its generation is unique to this specific step of the citric acid cycle.

Answer 10

guanosine triphosphate (GTP)

Question 11

This enzyme converts succinate to fumarate with the help of flavin adenine dinucleotide (FAD) through transfering of Electrons forming FADH2

Answer 11

succinyl dehydrogenase

Question 12

serves as a carrier of electrons and protons to the electron transport chain, where it participates in ATP synthesis.

Answer 12

FADH2

Question 13

water is added to the four-carbon molecule fumarate, and with fumarase helping it catalyze hydration, converting it into another four-carbon molecule called?

Answer 13

malate

Question 14

is an intermediate in the citric acid cycle and serves as a precursor for the regeneration of oxaloacetate in the subsequent step.

Answer 14

Malate

Question 15

The oxidation of malate involves the transfer of electrons to the coenzyme NAD+, resulting in the formation of?

Answer 15

NADH

Question 16

STEP 1:

Answer 16

THE TRANSFER OF ACETYL GROUP

Question 17

STEP 2:

Answer 17

ISOMERIZATION

Question 18

STEP 3:

Answer 18

OXIDATION/CARBOXYLATION

Question 19

STEP 4:

Answer 19

REJOINING WITH COA

Question 20

STEP 5:

Answer 20

FORMATION OF GTP

Question 21

STEP 6:

Answer 21

OXIDATION OF FAD

Question 22

STEP 7:

Answer 22

Hydration

Question 23

STEP 8:

Answer 23

FINAL OXIDATION