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Properties of CO

Man dies in t...

Question

Man dies in the atmosphere of CO because:

A

it combines with the

O_{2}

present in the body to form

C O_{2}

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B

it combines with the haemoglobin of blood making it incapable of absorbing

O_{2}

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C

it reduces the organic matter of tissues

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D

it dries up the blood

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Solution

The correct option is D it combines with the haemoglobin of blood making it incapable of absorbing $O_{2}$
Carbon monoxide binds to haemoglobin to form carboxyhaemoglobin, which is about 300 times more stable than the oxygen-haemoglobin complex.

In blood, when the concentration of carboxyhaemoglobin reaches about 34 %, the oxygen-carrying capacity is reduced greatly leading to a lack of oxygen in the body.

Therefore, option B is correct.

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Similar questions

Choose the right sequential phenomena among the following during the delivery of

O_{2}

from blood to tissue.

P: Absorption of

C O_{2}

Q: Reaction of absorbed

C O_{2}

H_{2} O

H_{2} C O_{3}

within RBC and its conversion into

H^{+}

H C O_{3}^{-}

R: Reaction of absorbed

C O_{2}

H_{2} O

in plasma to form

H_{2} C O_{3}

and its conversion into

H^{+}

H C O_{3}^{-}

S: Combination of

H^{+}

with heme portion of

H b O_{2}

O_{2}

T: Combination of

H C O_{3}^{-}

with heme portion of

H b O_{2}

to form reduced hemoglobin and release of

O_{2}

Q. Combination of haemoglobin with

O_{2}

in lungs can be promoted by

Q. Choose the right sequential phenomena among the following during the delivery of

O_{2}

from blood tissue.
P : Absorption of

C O_{2}

by the blood.
Q : Reaction of absorbed

C O_{2}

H_{2} O

H_{2} C O_{3}

within RBC and its conversion into

H^{+}

H C O_{3}^{-}

ions in the presence of carbonic anhydrase enzyme.
R : Reaction of absorbed

C O_{2}

H_{2} O

in plasma to form

H_{2} C O_{3}

and its conversion into

H^{+}

H C O_{3}^{-}

ions in the presence of carbonic anhydrase enzyme.
S : Combination of

H^{+}

with heme portion of

H b O_{2}

O_{2}

.
T : Combination of

H C O_{3}^{-}

with heme portion

H b O_{2}

to form reduced hemoglobin and release of

O_{2}

.

Q. Assertion :Cytochrome oxidase enzyme contains copper. Reason: Cyanide combines with the copper of cytochrome oxidase and prevents

O_{2}

combining with it.

Q. The reaction of

O_{2}

C O

with haemoglobin gives:

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