Free Respiration In Plants (Daily Quiz: 10) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Respiration In Plants (Daily Quiz: 10) Time:

Question-1

Oxidative phosphorylation is production of

(a)

(b)

(c)

(d)


Question-2

In mitochondrial electron transport system, for every two pairs of electrons that pass from NADH molecules through a sequential series of cytochrome enzymes to molecular oxygen generate

(a)

(b)

(c)

(d)


Question-3

$NADP^{+}$ is reduced to NADPH in

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

HMP pathway generates NADPH molecules which are used as reductants in biosynthetic process under conditions when NADPH molecules are not generated by photosynthesis. It is, therefore, important in non-photosynthetic tissues such as in differentiating tissues, generating seeds and during periods of darkness. Production of NADPH is not linked to ATP generation in pentose phosphate pathway.


Question-4

Cyanide resistant pathway is

(a)

(b)

(c)

(d)


Question-5

In an anaerobic condition, yeast cells breakdown glucose into

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Yeast cell perform alcoholic fermentation under anaerobic conditions where incomplete oxidation of glucose is achieved by sets of reaction in which pyruvic acid is converted to $CO_{2}$ and ethanol ($C_{2}H_{5}$OH). The enzymes, pyruvic acid decarboxylase and alcohol dehydrogenase catalyse these reactions.


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