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Biochemistry Multiple Choice Questions | MCQs | Quiz

Biochemistry Interview Questions and Answers
Practice Biochemistry questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Aqueous Systems
•   Weak Acids & Bases
•   Biological Systems
•   Water Reactant
•   Amino Acids
•   Peptides & Proteins
•   Proteins Basics
•   Proteins Covalent Structure
•   Protein Evolution
•   Protein Structure
•   Quaternary Structures
•   Protein Denaturation
•   Oxygen-Binding Proteins
•   Immunoglobulins
•   Actin & Molecular Motors
•   Enzyme Kinetics
•   Enzymatic actions
•   Regulatory Enzymes
•   Monosaccharides
•   Polysaccharides
•   Glycoconjugates
•   Nucleic Acid Basics
•   Nucleic Acid Structure
•   Nucleic Acid Chemistry
•   DNA Cloning Basics - 1
•   DNA Cloning Basics - 2
•   Genes & Genomes - 1
•   Genes & Genomes - 2
•   Genomes & Proteasomes
•   Genome Alterations
•   Storage Lipids
•   Structural Lipids
•   Cofactors & Pigments
•   Lipids Process
•   Membranes Architecture
•   Membrane Dynamics
•   Solute Transport Membrane
•   Signal Transduction
•   Gated Ion Channels
•   Receptor Enzymes
•   Coupled Receptors
•   Membrane Rafts
•   Plants Signaling
•   Olfaction & Gustation
•   Steroid Hormones
•   Protein Kinases
•   Oncogenes
•   Bioenergetics
•   Phosphoryl Group Transfers
•   Biological Oxidation
•   Glycolysis
•   Feeder Pathways
•   Fermentation
•   Gluconeogenesis
•   Glucose Oxidation
•   Metabolic Pathways
•   Glycolysis Regulation
•   Glycogen Synthesis
•   Metabolic Control
•   Metabolic Fates
•   Nitrogen Excretion
•   Amino Acid Degradation
•   Electron Transfer reactions
•   ATP Synthesis - 1
•   ATP Synthesis - 2
•   Oxidative Phosphorylation
•   Mitochondrial Genes
•   Oxidative Stress
•   Phosphorylation Features
•   Light Driven Electron Flow
•   Photophosphorylation
•   Fatty Acids & Eicosanoids
•   Triacylglycerols
•   Membrane Phospholipids
•   Cholesterol & Steroids
•   Nitrogen Metabolism
•   Amino Acids
•   Amino Acids Molecules
•   Nucleotides Degradation
•   Chromosomal Elements
•   DNA Supercoiling
•   Chromosomes Structure
•   DNA Replication
•   DNA Repair
•   DNA Recombination
•   DNA Dependent Synthesis
•   RNA Processing
•   RNA Dependent Synthesis
•   Genetic Code
•   Protein Synthesis
•   Protein Targeting
•   Gene Regulation Principles
•   Prokaryotes Expression-1
•   Prokaryotes Expression-2
•   Tough Questions
•   Tricky Questions
•   Advanced Questions

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Biochemistry Questions and Answers – ATP Synthesis – 2

Posted on July 17, 2017 by Manish

This set of Biochemistry online test focuses on “ATP Synthesis – 2”.

1. The proposal of chemiosmotic hypothesis was by
a) Peter D. Mitchell
b) Charles Darwin
c) Mendele
d) Alfred Russell
View Answer

Answer: a
Explanation: Peter D. Mitchell was the one to propose chemiosmotic hypothesis.
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2. ATP synthesis by chemiosmosis is by
a) ATP dehydrogenase
b) Gyrase
c) ATP synthase
d) Dehydrogenase
View Answer

Answer: c
Explanation: ATP synthase synthesizes ATP by chemiosmosis.

3. The measure of potential energy stored as combination of proton and voltage gradients across membrane is termed as
a) Proton motive force
b) Electron motive force
c) Molecule motive force
d) Ion motive force
View Answer

Answer: a
Explanation: The measure of potential energy stored as combination of proton and voltage gradients across membrane is termed as proton motive force.

4. The transport of acyl co-A for oxidation using a shuttle involves formation of the intermediate
a) Acyl coenzyme A
b) 3 acetyl co-A
c) Acyl cartinine
d) None
View Answer

Answer: c
Explanation: The intermediate acyl cartinine is formed in the transport of acyl co-A for oxidation using a shuttle.

5. Three identical β subunits of the F1 complex during ATP synthesis have
a) Different affinities for ATP and ADP
b) Similar affinities for ADP and ATP
c) Different affinities for ADP but not ATP
d) Different affinities for ATP but not ADP
View Answer

Answer: a
Explanation: The conformational differences among β subunits extend to differences in their ATP/ADP-binding sites.
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6. The acyl co-A formed in the cytosol is transported to
a) Mitochondrial matrix
b) Microsomes
c) ER
d) Remains in cytosol
View Answer

Answer: a
Explanation: The acyl co-A formed in the cytosol is transported to mitochondrial matrix.

7. Every cycle of β-oxidation produces
a) 1 FAD, 1 NAD+ and 2 CO2 molecules
b) 1 FADH2, 1 NADH and 1 acetyl co-A
c) 1 FADH2, 1 NAD+ and 1 acetyl co-A
d) 1 FAD, 1 NADH and 2 CO2 molecules
View Answer

Answer: b
Explanation: Every cycle of β-oxidation produces 1 FADH2, 1 NADH and 1 acetyl co-A.

8. Membrane potential and proton gradient
a) Cancel one another when uncouplers are present
b) Reinforce one another when respiratory inhibitors are present
c) Are sufficient, separately to make ATP from ADP + Pi
d) Are required to make ATP
View Answer

Answer: d
Explanation: Membrane potential and proton gradient are both required to make ATP.

9. Long-chain fatty acids are oxidized step-wise in one carbon units starting from
a) Carboxyl end
b) Aliphatic end
c) a and b
d) None
View Answer

Answer: a
Explanation: Long-chain fatty acids are oxidized step-wise in one carbon units starting from carboxyl end.

10. Maximum energy per gram on oxidation is yielded from
a) Starch
b) Fat
c) Glycogen
d) Protein
View Answer

Answer: b
Explanation: Fat yields maximum energy per gram on oxidation.
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Sanfoundry Global Education & Learning Series – Biochemistry.

To practice all areas of Biochemistry for online tests, here is complete set of 1000+ Multiple Choice Questions and Answers.

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Biochemistry Questions and Answers – Regulation of Oxidative Phosphorylation »
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