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%
❌️
Forwarded from طـن أمسكيوات
one of the following complexes is similar to that involved in the oxidative decarboxylation of pyruvate
Anonymous Quiz
10%
B-succinate dehydrogenase
8%
α-malate dehydrogenase
73%
α-ketoglutarate dehydrogenase
8%
isocitrate dehydrogenase
Forwarded from طـن أمسكيوات
High concentrations of ـــــــــــــ inhibit α-ketoglutarate dehydrogenase
Anonymous Quiz
38%
NH4
11%
Cl-
44%
NH3
8%
CuSo4
Forwarded from طـن أمسكيوات
for the decarboxylation of oxaloacetate to phosphoenolpyruvate in gluconeogenesis the ـــــــــــــ is use as source of energy
Anonymous Quiz
36%
ATP
46%
GTP
9%
ADP
9%
GDP
Forwarded from طـن أمسكيوات
Total final energy that can be obtained from Citric Acid Cycle is
Anonymous Quiz
48%
9 ATP + 1 ATP or GTP
27%
10 ATP + 1 ATP or GTP
4%
15 ATP + GTP
22%
30 ATP
Forwarded from طـن أمسكيوات
B1 is participate In step no ـــــــــــــ which α-ketoglutarate dehydrogenase is used as as a catalyst
Anonymous Quiz
26%
3
61%
4
10%
5
3%
8
Forwarded from طـن أمسكيوات
in step no 4 α -ketoglutarate dehydrogenase which of the following is participate
Anonymous Quiz
17%
Pantothenic acid
13%
Riboflavin
24%
Thiamin
46%
All the following
Forwarded from طـن أمسكيوات
Riboflavin is participate in the Citric Acid Cycle in the form of
Anonymous Quiz
9%
NAD+
8%
Coenzyme A
73%
FAD+
10%
Thiamin diphosphate
Forwarded from طـن أمسكيوات
Anaplerosis is the act of replenishing the citric acid cycle intermediates that have been extracted for biosynthesis.
Anonymous Quiz
88%
✅️
12%
❌️
Forwarded from طـن أمسكيوات
The conversion of pyruvate to acetyl CoA is catalyzed by the enzyme pyruvate dehydrogenase. In this reaction
Anonymous Quiz
12%
a) NADPH is oxidized to NADP
32%
b) NADH is oxidized to NAD
13%
c) NADP is reduced to NADPH
43%
d) NAD is reduced to NADH
Forwarded from طـن أمسكيوات
In the tricarboxylic acid cycle, the reaction for the conversion of pyruvate to acetyl CoA is known as
Anonymous Quiz
65%
a) Oxidative decarboxylation
20%
b) Oxidative phosphorylation
5%
c) Reductive biosynthesis
10%
d) Reductive decarboxylation
Forwarded from طـن أمسكيوات
Which of the following is not the irreversible reaction of Kreb's cycle?
Anonymous Quiz
13%
a) Isocitrate dehydrogenase
24%
b) Alpha-ketoglutarate dehydrogenase
28%
c) Citrate synthase
34%
d) Malate dehydrogenase
Forwarded from 3rd stage / Exams
مادة البايو كمستري
المحاضرة الرابعة
THE CITRIC ACID CYCLE
المحاضرة الرابعة
THE CITRIC ACID CYCLE