Forwarded from Dr.Shimaa Munther Biochemistry MCQ
TCA cycle is also known as the amphibolic pathway (function both in oxidative and synthetic processes). Which of the following is a correct statement regarding
Anonymous Quiz
14%
Alpha-ketoglutarate plays a critical role in amino acid metabolism
17%
Oxaloacetate is an intermediate for gluconeogenesis and fatty acid synthesis
8%
Succinyl CoA is involved in ketone body metabolism
61%
All of the above
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following metabolic intermediate activates the TCA cycle?
Anonymous Quiz
28%
High NADH/NAD
28%
High ADP/ATP ratio
35%
Oxaloacetate
9%
None of the above
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
What is the Other name of Krebs Cycle
Anonymous Quiz
4%
EMP pathway
3%
Glycolate Cycle
4%
Glyoxylate Cycle
89%
Citric acid cycle
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Kreb’s cycle begins with the creation of six carbon compounds as a result of a reaction between two carbon compounds namely
Anonymous Poll
11%
Succinic Acid and pyruvic acid
7%
Maleic acid and acetyl CoA
7%
Fumaric acid and Pyruvic acid
75%
Acetyl CoA and Oxaloacetic Acid
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Why is the TCA cycle the central pathway of metabolism of the cell?
Anonymous Quiz
55%
Its intermediates are commonly used by other metabolic reactions
20%
All other metabolic pathways depend upon it
15%
It occurs in the center of the cell
11%
None of the above
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Niacin (B3) is important in all the following krebs reactions except:
Anonymous Quiz
12%
Isocitrate dehydrogenase
19%
Malate dehydrogenase
17%
α -ketoglutarate dehydrogenase
52%
Succinate dehydrogenase
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which of the following is NOT a site for regulation of the citric acid cycle?
Anonymous Quiz
17%
Citrate synthase
10%
Isocitrate dehydrogenase
63%
Pyruvate dehydrogenase
10%
α-ketoglutarate dehydrogenase
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
Which enzyme in the citric acid cycle is inhibited by ATP?
Anonymous Quiz
30%
Citrate synthase
17%
Fumarase
27%
α-ketoglutarate dehydrogenase
26%
Isocitrate dehydrogenase
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
What activates the dehydrogenases in the citric acid cycle?
Anonymous Quiz
12%
ATP
10%
ADP
31%
NADH
47%
Ca2+
Forwarded from Dr.Shimaa Munther Biochemistry MCQ
What is the effect of increased oxaloacetate concentration on the citrate synthase reaction?
Anonymous Quiz
30%
Increased rate of reaction
43%
The effect depends on the concentration of acetyl-CoA
9%
No effect on the rate of reaction
18%
Decreased rate of reaction
Forwarded from طـن أمسكيوات
The citric acid cycle
Anonymous Quiz
68%
A. It is the final common pathway
19%
B. The first common Pathway
13%
C. The second common pathway
Forwarded from طـن أمسكيوات
The citric acid cycle also has a central role in
Anonymous Quiz
7%
A. gluconeogenesis,
2%
B. lipogenesis,
3%
C. interconversion of amino acids.
88%
D. All above
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات