Question

'Statement type Questions
Note:
D) Both S-I and S-II are correct
2) S-I is incorrect and S-II is correct
3) S-I is correct and S-II is incorrect
4) Both S-I and S-II are incorrect

Please answer sooooon.........
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Answer 1

Question

S-I: R Q value varies with nature of the respiratory substrate.

S-II: The proportion of C-O is not the same in different respiratory substrates.

Answer :

Both statement - l and statement - ll is correct.

$\bigstar$ Proportion of C-O is not same in different respiratory substrates. For example in glucose carbon to oxygen ratio is 1 : 1 while in Tripalmitin it is 51 : 6.

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Question

S-I: Mitochondria are essential for aerobic respiration.

S-II: In any living cell ATP synthase is present only in mitochondria.

Answer :

Statement - I is correct and statement - II are incorrect.

$\bigstar$ Aerobic respiration takes place with the help of mitochondria. ATP synthase is also present in chloroplast. Hence this statement - ll is false.

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Question

S-I: RQ of tripalmitin is less than 1

S-II: In Tripalmitin Carbon to oxygen ratio is very high

Answer :

Both Statement - I and statement - II are correct.

$\bigstar$ In Tripalmitin carbon is more than the oxygen. So substrate utilizes more O₂ than released CO₂

$\sf 2C_{51} H_{97} O_6 + 145O_2 \longrightarrow 102CO_2 + 98H_2O + Energy$

$\sf RQ = \dfrac{102 CO_2 \: evolved}{145 O_2 \: consumed} = 0.7$

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Question

S-I: R.Q value of germinating rice grains is one

S-II: Rice grains store food materials in their endosperm

Answer :

Both Statement - I and statement - II are correct.

$\bigstar$ Rice grains store starch in their endosperm as reserve food. In germinating rice grains carbohydrate is respiratory substrate hence RQ is 1.

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Question

S-I: R.Q value of fats is less than one

S-II: Fats contain less O₂ and hence consume more O₂ during their oxidative breakdown.

Answer :

Both Statement - I and statement - II are correct.

$\bigstar$ Fats contain less O₂ and hence consume more O₂ during their oxidative breakdown RQ value of fats is less than one.