Free Respiration In Plants (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Respiration In Plants (Weekly Quiz: 2) Time:

Question-1

The process of phosphorylation takes place in

(a)

(b)

(c)

(d)


Question-2

ATP is

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

ATP is a nucleotide found in the mitochondria of all plant and animal cells. It is the major source of energy for cellular reactions and is commonly known as the energy currency of the cell. This energy is released during its conversion to ADP.


Question-3

Which of the following statement regarding the process of glycolysis is correct?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Glycolysis occurs in cytoplasm, is a common phase of aerobic and anaerobic respiration. It is a partial breakdown of glucose molecule into two molecules of pyruvic acid.


Question-4

RQ is defined as

(a)

(b)

(c)

(d)


Question-5

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on the

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

The enzyme responsible for oxidative phosphorylation is ATP synthase. ATP synthase is located in the $F_{1}$ component of $F_{0} – F_{1}$ or elementary particles. ATP synthase becomes active in ATP formation only where there is a proton gradient having higher concentration of $H^{+}$ or protons on the $F_{0}$ side as compared to $F_{1}$ side. Increased proton concentration is produced in the outer chamber of outer surface of inner mitochondrial membrane by pushing of protons with the help of energy liberated by passage of electrons from one carrier to another.


Question-6

Respiratory quotient (RQ) for fatty acid is

(a)

(b)

(c)

(d)


Question-7

Respiratory substrate yielding maximum number of ATP molecule is

(a)

(b)

(c)

(d)


Question-8

The correct sequence of electron acceptor in ATP synthesis is

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Last step of aerobic respiration is oxidation of reduced co-enzymes, i.e., $NADH_2$ and $FADH_2$ by molecular oxygen through FAD, CoQ (ubiquinone), Cyt. b, Cyt. c1, Cyt. c, Cyt. a and Cyt $a_3$. Two hydrogen atoms or electrons move from $NADH_2$ and travel through this ETS chain and finally combine with half molecule of $O_2$ to form water. During this electron transport FAD and Fe of different cytochromes are successively reduced and oxidised and at certain points, enough energy is released which is used to bind ADP with Pi to form ATP.


Question-9

The last or terminal cytochrome in respiratory chain is

(a)

(b)

(c)

(d)


Question-10

The scheme of glycolysis is given by

(a)

(b)

(c)

(d)


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