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  #1  
Old 10-15-2012
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Question iron is bound to...?

Q) iron can be bound in ferrous form in cells to..?

a) hemoglobin
b) transferrin
c) myoglobin
d) ferrooxidase
e) ferritin
f) hemosiderin
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  #2  
Old 10-15-2012
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Does it have two answers ?
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Old 10-15-2012
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i dont think...it has 2 answers in it...you may be right though(may be my framing of question was wrong)....anyways i'll post the answer in few hrs....
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Old 10-15-2012
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Quote:
Originally Posted by venky2600 View Post
Q) iron can be bound in ferrous form in cells to..?

a) hemoglobin
b) transferrin
c) myoglobin
d) ferrooxidase
e) ferritin
f) hemosiderin
hemoglobin and myoglobin
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Old 10-15-2012
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Post c is right

C) myoglobin is the appropriate one....

iron is bound to a)Hemoglobin and transferrin in blood, and b)myoglobin,ferritin and hemosiderin in cells and tissues

ferrous forms(Fe2+) are carried only by the oxygenated proteins like(hemoglobin and myoglobin)..........rest of them carry iron in ferric form(Fe3+)

transferrin carries Fe3+ in blood, and ferritin stores normal amount of iron in Fe3+ in cells.,hemosiderin stores excess Fe3+ (prevent it from forming free radicals)....

ferrooxidase aka ceruloplasmin, a Cu2+ protein oxidize Fe2+ to Fe3+ for transport(with the help of vit. C)

I think i may not be true with the answer...i posted here coz to make clear with the concept....so correct me if i'm wrong
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Old 10-16-2012
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What about Hb in RBC ?? Bound to ferrous form right ??
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Old 10-16-2012
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Quote:
Originally Posted by alice View Post
What about Hb in RBC ?? Bound to ferrous form right ??
ya...Hb and myoglobin can bound both ferrous forms(for oxygenation) and ferric forms(for transport, it's converted).....

Hb can bound in rbc(intravascualr compartment) and myoglobin bound in cells and tissues(intracellular compartment)

Last edited by venky2600; 10-16-2012 at 07:23 AM.
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Old 10-16-2012
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very nice question .. but I got late in answering ..
keep them coming
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Old 10-16-2012
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Nice question
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