Forwarded from طـن أمسكيوات
Which of the intermediate of the Kreb’s cycle is utilised in the formation of amino acids?
Anonymous Quiz
10%
a) Citric acid
6%
b) Malic acid
4%
c) Isocitric acid
80%
d) 𝛼-ketoglutaric acid
Forwarded from طـن أمسكيوات
Acetyl CoA is formed from pyruvate by______reaction.
Anonymous Quiz
19%
a) Dehydration
5%
b) Reduction
68%
c) Oxidative decarboxylation
8%
d) Dephosphorylation
Forwarded from طـن أمسكيوات
Which of the following is not formed during the Krebs cycle?
Anonymous Quiz
85%
a) Lactate
2%
b) Isocitrate
3%
c) Succinate
10%
d) Both (a) and (b)
Forwarded from طـن أمسكيوات
The entry of pyruvate into the TCA cycle is inhibited by the presence of a high cellular concentration of:
Anonymous Quiz
22%
a) Pyruvate
35%
b) NADH
26%
c) Coenzyme A
16%
d) AMP
Forwarded from طـن أمسكيوات
FAD is reduced in which of the reaction of the Kreb’s cycle?
Anonymous Quiz
4%
a) Isocitrate to oxaloacetate
16%
b) Succinyl CoA to Succinate
14%
c) Fumarate to malate
66%
d) Succinate to fumarate
Forwarded from طـن أمسكيوات
Which of the following enzyme catalyzes substrate-level phosphorylation i.e conversion of GDP to GTP?
Anonymous Quiz
9%
a) Malate dehydrogenase
7%
b) Fumarase
11%
c) Isocitrate dehydrogenase
73%
d) Succinyl CoA thiokinase
Forwarded from طـن أمسكيوات
Which of the following enzyme of the TCA cycle catalyzes co-reduction of FAD+ to FADH2?
Anonymous Quiz
5%
a) Isocitrate dehydrogenase
16%
b) Alpha-ketoglutarate dehydrogenase
67%
c) Succinate Dehydrogenase
12%
d) Malate dehydrogenase
Forwarded from طـن أمسكيوات
Which of the following metabolic intermediate activates the TCA cycle?
Anonymous Quiz
37%
a) High NADH/NAD ratio
22%
b) High ADP/ATP ratio
31%
c) High Oxaloacetate
10%
d) None of the above
Forwarded from طـن أمسكيوات
Is important for Synthesis of mg+2
Anonymous Quiz
39%
Succinate Succinyl-CoA
29%
Oxaloacetate
15%
Malate
17%
Succinate
Forwarded from طـن أمسكيوات
Malonate is an inhibitor of
Anonymous Quiz
7%
Aconitase
46%
Succinate dehydrogenase
42%
Malate dehydrogenase
5%
Citrate synthase
Forwarded from طـن أمسكيوات
luoroacetate is an inhibitor of…?
Anonymous Quiz
19%
Isocitrate dehydrogenase
30%
α-Ketoglutarate dehydrogenase complex
10%
Succinate dehydrogenase
41%
Aconitase
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
important in which step of (mn+2)Krebs Cycle
Anonymous Quiz
18%
Formation of Citrate
23%
Formation of Oxalosuccinate
18%
Formation of fumarate
41%
Formation of α-Ketoglutarate
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
Forwarded from طـن أمسكيوات
THE CITRIC ACID CYCLE It is the final common pathway for the oxidation of
Anonymous Quiz
3%
protein
7%
carbohydrate
1%
lipid
10%
A&C
78%
All the following
Forwarded from طـن أمسكيوات
The citric acid cycle also has a central role in glycolysis , lipolysis and interconversion of amino acids.
Anonymous Quiz
74%
✅️
26%
❌️
Forwarded from طـن أمسكيوات
Acetyl-CoA + oxaloacetate = ـــــــــــــ catalyzed by ـــــــــــــ
Anonymous Quiz
10%
isocitrate , citrate synthase
5%
oxalosuccinat , isocitrate dehydrogenase
4%
oxalosuccinate , aconitase
82%
citrate,citrate synthase
Forwarded from طـن أمسكيوات
There are three isoenzymes of isocitrate dehydrogenase. One, which uses NAD+, is found only in cytosol . The other two use NADP+ and are found in mitochondria and the cytosol
Anonymous Quiz
58%
✅️
42%
❌️