Biology Quiz on Chemiosmotic Hypothesis for NEET & Medical Exam 2021

Biology Quiz on Chemiosmotic Hypothesis

Biology Quiz on Chemiosmotic Hypothesis: NEET is the most coveted medical entrance examination carried out across the country. It is an objective type, pen-paper test comprising 4 sections – Physics, Chemistry, Botany and Zoology. The maximum marks that can be scored are 720 marks and consists of 180 questions. 50% of the paper is dedicated to Biology, as the NEET exam primarily aims at enabling students to take up seats in medical courses. Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. In this post we are providing you biology quiz on Chemiosmotic Hypothesis.

Biology Quiz on Chemiosmotic Hypothesis

Q1. Which of the following is necessary for chemiosmosis?
a) Membrane
b) Proton gradient
c) Proton pump
d) All of the above

Q2. Proton concentration is highest in which part of the mitochondria?
a) Inner membrane
b) Outer membrane
c) Intermembrane space
d) Matrix

Q3. Which of the following processes is responsible for generating a proton gradient across the thylakoid membrane?
a) Proton carrier transport H⁺ from stroma to lumen
b) NADP reductase enzyme present at the stroma side, removes proton by reducing NADP⁺
c) Splitting of water on the inner side of the membrane
d) All of the above

Q4. The ATP synthesised by ATP synthase present in the thylakoid membrane is released towards __________.
a) inner membrane
b) outer membrane
c) stroma
d) lumen

Q5. Cyclic photophosphorylation is associated with the production of _________.
a) ATP
b) NADPH
c) O₂
d) All of the above

Q6. Who proposed the chemiosmotic hypothesis of ATP synthesis?
a) H G Khorana
b) Peter Mitchell
c) J D Watson
d) Francis Crick

Q7. ATP synthesis by ATP synthase is driven by the movement of __________.
a) electrons
b) protons
c) NADPH
d) All of the above

Q8. Which part of ATP synthase forms the transmembrane channel?
a) CF₀
b) CF₁
c) Both
d) None

Q9. Proton concentration is highest in which part of the chloroplast?
a) Antennae complex
b) Lumen of thylakoids
c) Intermembrane space
d) Stroma

Q10. During cellular respiration, chemiosmosis occurs in _________.
a) Mitochondria
b) Nucleoplasm
c) Chloroplast
d) Peroxisome

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