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Vitamins And Coenzymes
Vitamins And Coenzymes
Exercise: Vitamins And Coenzymes
📂 Vitamins And Coenzymes
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Questions for: Vitamins And Coenzymes
The reductant, NADH, transfers the electrons via a flavo-proteins to the specific disulfide (S-S) protein to form a dithiol (SH,SH) protein which converts vitamin
A:
B
12
(Co
2+
)to B
12
(Co)
B:
B
12
(Co) to B
12
(Co
2+
)
C:
B
12
(Co
2+
)to B
12
(Co
+
)
D:
B
12
(Co
+
)to B
12
(Co
2+
)
Answer:
C
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In the co-enzyme B
12
the position occupied by a cyanide ion in vitamin B
12
is bonded directly to the __________ of the ribose of adenosine.
A:
adenine
B:
5-6 dimethylbenzimidazole
C:
hydroxycobalamin
D:
cyanocobalamin
Answer:
A
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An example of a digestive hormone is
A:
lipase
B:
pepsin
C:
amylase
D:
gastrin
Answer:
D
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Post
Vitamin B
12
is useful in the prevention and treatment of
A:
pernicious anemia
B:
scurvy
C:
cataract
D:
beri-beri
Answer:
A
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Lipoic acid exists in
A:
oxidized form
B:
reduced form
C:
oxidized and reduced form both
D:
none of these
Answer:
C
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