MCQ on Chemiosmosis
1. Chemiosmotic theory was proposed by?
a) J D Watson
b) Peter
Mitchell
c) Francis
Crick
d) H
G Khorana
2. The organelle of chemiosmosis in cellular respiration is
a) nucleoplasm
b) peroxisome
c) chloroplast
d) mitochondrion
3. Which of the following are the major events in chemiosmosis?
a) electron
flow and release of energy
b) proton
gradient formation
c) PMF
driven ATP synthesis
d) all
of these
4. According to chemiosmosis, electrons are donated by
a) NADH
and FADH2
b) NADH and ATP
c) ATP
and FADH2
d) NADH
and FMN
5. The site of electron flow in chemiosmosis is
a) Mitochondrion
b) Outer
Mitochondrial membrane
c) Inner
Mitochondrial membrane
d) Mitochondrial
matrix
6. The energy released from electron flow is used to pump protons
(H+) from
a) Intermembrane
space to cytoplasm
b) Outer
Mitochondrial membrane to inner Mitochondrial membrane
c) Mitochondrial matrix to intermembrane space
d) Inner
Mitochondrial membrane to outer Mitochondrial membrane
7. The site of proton gradient formation is
a) Mitochondrial
matrix
b) intermembrane
space of mitochondria
c) Inner
Mitochondrial membrane
d)
outer Mitochondrial membrane
8. ATP synthesis by ATP synthase is driven by
a) H+
movement
b) electron
movement
c) NADH
movement
d) All
of these
9. ATP synthase synthesise ATP and release ATP towards
a) Mitochondrial
matrix
b) Inner
Mitochondrial membrane
c) outer
Mitochondrial membrane
d) intermembrane
space
10. Chemiosmosis and associated ATP synthesis in photosynthesis
take place in
a) inner
mitochondrial membrane
b) thylakoid
membrane of chloroplast in light reaction
c) stroma
of chloroplast in dark reaction
d) thylakoid
lumen of chloroplast in light reaction
Answers
1. b) Peter Mitchell
2. d) mitochondrion
3. d) all of these
4. a) NADH and FADH2
5. c) Inner Mitochondrial membrane
6. c) Mitochondrial
matrix to intermembrane space
7. b) intermembrane space of mitochondria
8. a) H+ movement
9. a) Mitochondrial matrix
10. b) thylakoid membrane of chloroplast in light
reaction
Tags:
cellular respiration MCQs
Chemiosmosis mcq
chemiosmotic hypothesis multiple choice
mcqbiology
site of ATP synthesis
site of ETC
Good job..keep it up..!!
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