NCERT Class 11-Biology: Chapter –14 Respiration in Plants Part 1
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Multiple Choice Questions
Question 1:
The ultimate electron acceptor of respiration in an aerobic organisms is:
a. Cytochrome
b. Oxygen
c. Hydrogen
d. Glucose
Answer: (b)
Question 2:
Phosphorylation of glucose during glycolysis is catalysed by
a. Phosphoglucomutase
b. Phosphoglucoisomerase
c. Hexokinase
d. Phosphorylase
Answer: (c)
Question 3:
Pyruvic acid, the key product of glycolysis can have many metabolic fates. Under aerobic condition it forms
a. Lactic acid
b.
c.
d. Ethanol
Answer: (c)
Question 4:
Electron Transport System (ETS) is located in mitochondrial
a. Outer membrane
b. Inter membrane space
c. Inner membrane
d. Matrix
Answer: (b)
Question 5:
Which of the following exhibits the highest rate of respiration?
a. Growing shoot apex
b. Germinating seed
c. Root tip
d. Leaf bud
Answer: (b)
Question 6:
Choose the correct statement:
a. Pyruvate is formed in the mitochondrial matrix.
b. During the conversion of succinyl Co-A to succinic acid a molecule of ATP is synthesized.
c. Oxygen is vital in respiration for removal of hydrogen.
d. There is complete breakdown of glucose in fermentation.
Answer: (c)
Question 7:
Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?
a. Mitochondria synthesise ATP
b. Mitochondria have a double membrane
c. The enzymes of the Krebs cycle and the cytochromes are found in mitochondria.
d. Mitochondria are found in almost all plants and animal cells.
Answer: (a)
Question 8:
The end product of oxidative phosphorylation is
a.
b.
c.
d.
Answer: (d)
Question 9:
Match the following and choose the correct option from those given below.
Column A | Column B | ||
A. | Molecular oxygen | i.. | α - Ketoglutaric acid |
B. | Electron acceptor | ii. | hydrogen acceptor |
C. | Pyruvate dehydrogenase | iii. | cytochrome C |
D. | Decarboxylation | iv | acetyl Co A |
Options
a. A-ii, B-iii, C-iv, D-i
b. A-iii, B-iv, C-ii, D-i
c. A-ii, B-i, C-iii, D-iv
d. A-iv, B-iii, C-i, D-ii
Answer: (a)