Kreb cycle

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32 Terms

1
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What is the process where pyruvate undergoes further breakdown?
Aerobic respiration.
2
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What does aerobic respiration require?
Oxygen.
3
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Which process yields more energy than glycolysis?
Aerobic respiration.
4
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What are the two processes involved in aerobic respiration?
Krebs cycle and Electron Transport Chain with Oxidative Phosphorylation.
5
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What is the final common pathway of oxidative catabolism in aerobic cells?
The Electron Transport Chain.
6
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Where does the final common pathway of oxidative catabolism occur?
In the mitochondrial matrix.
7
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What are the products of many catabolic pathways that yield acetyl CoA for the TCA cycle?
Glycogen, glucose, lactate, pyruvate, fatty acids, and amino acids.
8
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What is the primary molecule that enters the TCA cycle?
Acetyl-CoA.
9
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What is an amphibolic pathway?
It involves both anabolic and catabolic processes.
10
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What is the focus of an anabolic process?
The synthesis of biosynthetic precursors such as α-Ketoglutarate, Oxaloacetate, and Succinyl CoA.
11
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What is the focus of a catabolic process?
The degradation of 2-C acetyl residues from carbohydrates, fatty acids, and amino acids.
12
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What is the initial step that converts pyruvate to Acetyl CoA?
Oxidative Decarboxylation.
13
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What is the carrier of the acyl group in the conversion of pyruvate to Acetyl CoA?
CoA.
14
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What is another name for the Tricarboxylic Acid Cycle?
Krebs cycle.
15
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What is the enzyme involved in the conversion of pyruvate to Acetyl CoA?
Pyruvate dehydrogenase.
16
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What is the electron carrier involved in the conversion of pyruvate to Acetyl CoA?
NAD+ and NADH.
17
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What is the product of the condensation reaction between Acetyl CoA and Oxaloacetate?
Citrate + CoA + H2O.
18
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Which enzyme catalyzes the condensation of Acetyl CoA and Oxaloacetate to form Citrate?
Citrate synthetase.
19
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What is the product of the reaction between α-ketoglutarate and CoA?
Succinyl CoA.
20
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What is released as a byproduct in the reaction involving α-ketoglutarate and CoA?
CO2.
21
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What is the enzyme responsible for the oxidative decarboxylation of α-ketoglutarate?
α-ketoglutarate dehydrogenase.
22
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What coenzyme is involved in the conversion of α-ketoglutarate to Succinyl CoA?
NAD+ and NADH.
23
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What is the product of the conversion of succinate to fumarate?
Fumarate.
24
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Which enzyme is involved in the conversion of succinate to fumarate?
Succinate dehydrogenase.
25
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What electron carrier is reduced during the conversion of succinate to fumarate?
FAD (Flavin adenine dinucleotide).
26
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What is the reduced form of FAD?
FADH2 (Flavin adenine dinucleotide).
27
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Which cycle includes the conversion of succinate to fumarate?
Tricarboxylic Acid Cycle (TCA) or Krebs cycle.
28
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What is the enzyme that catalyzes the conversion of fumarate to malate in the Krebs cycle?
Fumarase.
29
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What is the product of the conversion of oxaloacetate to malate?
Malate.
30
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Which enzyme catalyzes the conversion of malate to oxaloacetate?
Malate dehydrogenase.
31
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What coenzyme is involved in the conversion of malate to oxaloacetate?
NAD+ and NADH.
32
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Which metabolic cycle includes the conversion of malate to oxaloacetate?
Tricarboxylic Acid Cycle (TCA) or Krebs cycle.