The Tricarboxylic Acid Cycle - Biochemistry | Biology+

Course

Biochemistry

Study Pack

Set 1: The Facts of Life: Chemistry Is the Logic of Biological Phenomena

Set 2: Water: the Medium of Life

Set 3: Thermodynamics of Biological Systems

Set 4: Amino Acids and the Peptide Bond

Set 5: Proteins: Their Primary Structure and Biological Functions

Set 6: Proteins: Secondary, Tertiary, and Quaternary Structure

Set 7: Carbohydrates and the Glycoconjugates of Cell Surfaces

Set 9: Membranes and Membrane Transport

Set 10: Nucleotides and Nucleic Acids

Set 11: Structure of Nucleic Acids

Set 12: Recombinant Dna, Cloning, Chimeric Genes, and Synthetic Biology

Set 13: Enzymeskinetics and Specificity

Set 14: Mechanisms of Enzyme Action

Set 15: Enzyme Regulation

Set 16: Molecular Motors

Set 17: Metabolism: an Overview

Set 18: Glycolysis

Set 19: The Tricarboxylic Acid Cycle

Set 20: Electron Transport and Oxidative Phosphorylation

Set 21: Photosynthesis

Set 22: Gluconeogenesis, Glycogen Metabolism, and the Pentose Phosphate Pathway

Set 23: Fatty Acid Catabolism

Set 24: Lipid Biosynthesis

Set 25: Nitrogen Acquisition and Amino Acid Metabolism

Set 26: Synthesis and Degradation of Nucleotides

Set 27: Metabolic Integration and Organ Specialization

Set 28: Dna Metabolism: Replication, Recombination, and Repair

Set 29: Transcription and the Regulation of Gene Expression

Set 30: Protein Synthesis

Set 31: Completing the Protein Life Cycle: Folding, Processing, and Degradation

Set 32: The Reception and Transmission of Extracellular Information

Set 19 The Tricarboxylic Acid Cycle

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Set 19 The Tricarboxylic Acid Cycle

(Multiple Choice)

Free

The two step reaction catalyzed by isocitrate dehydrogenase involves:
A.β-decarboxylation expelling the α-keto carboxyl as CO₂.
B.oxidation of the C-2 alcohol of isocitrate to form oxalosuccinatE.
C.oxidation of the C-2 alcohol to form oxaloacetatE.
D.β-elimination expelling the central carboxyl group as CO₂.

A) A and B
B) B and C
C) C and D
D) A and C
E) B and D

Answer

(Multiple Choice)

Free

Order the coenzymes according to their involvement in the pyruvate dehydrogenase complex.
A.NAD⁺
B.CoA-SH
C.TPP
D.Lipoate (lipoamide)
E.[FAD]

A) A, B, C, D, E
B) C, B, A, E, D
C) C, D, B, E, A
D) B, D, E, A, C
E) C, E, D, B, A

Answer

(Multiple Choice)

Free

Isocitrate dehydrogenase has all of the characteristics EXCEPT:

A) ADP raises the K_m for isocitrate by a factor of 10.
B) virtually inactive in the absence of ADP.
C) sufficiently exergonic to pull the aconitase reaction forward.
D) allosterically inhibited by NADH and ATP.
E) an oxidative-decarboxylation reaction.

Answer