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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 – Advanced Questions and Answers

Posted on July 17, 2017 by Manish

This set of Biochemistry Multiple Choice Questions & Answers (MCQs) focuses on “Biochemistry Advanced Questions and Answers “.

1. Which of the following glycoprotein functions as a lubricant and protective agent?
a) Collagens
b) Mucins
c) Transferrins
d) Immunoglobulins
View Answer

Answer: b
Explanation: Mucins function as a lubricant and protective agent.
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2. Which of the following is a hydroxyl fatty acid?
a) Linoleic acid
b) Palmitic acid
c) Linolenic acid
d) Cerebronic acid
View Answer

Answer: d
Explanation: Cerebronic acid is a fatty acid with -OH derivative.

3. Which of the following is false about fatty acids?
a) Melting point of fatty acids decreases with increase in degree of saturation
b) Lipids in tissues that are subjected to cooling are more unsaturated
c) Naturally occurring unsaturated long-chain fatty acids are nearly Trans-configuration
d) The membrane lipids contain mostly unsaturated fatty acids
View Answer

Answer: c
Explanation: Saturated long chain fatty acids are nearly trans-configuration.

4. The binding of ligands to many GPCRs leads to
a) Decrease in concentration of second messengers
b) Increase in concentration of second messengers
c) Decrease in concentration of first messengers
d) Increase in concentration of first messengers
View Answer

Answer: a
Explanation: The binding of ligands to many GPCRs leads to decrease in concentration of second messengers.

5. Which of the following are included in the types of glycolipids?
a) N-acetylgalactosamine
b) N-acetylglucosamine
c) Xylose
d) Cerebrosides
View Answer

Answer: d
Explanation: Cerebrosides are a group of glycosphingolipids, which are the subgroup of glycolipids.
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6. Which of the following catalyzes the cutting of PIP2 into 2 moles of IP3 and diacylglycerol in cell signaling?
a) Phosphokinase C
b) Phospholipase C
c) Lipokinase
d) Phosphodiesterase C
View Answer

Answer: b
Explanation: PLC also named as phospholipase grabs onto PIP2 and cuts it into diacylglycerol and IP3.

7. Site directed mutagenesis facilitated research on
a) Carbohydrates
b) Proteins
c) Lipids
d) Fats
View Answer

Answer: b
Explanation: Site directed mutagenesis changes the amino acid sequence by altering DNA sequence of cloned gene. It facilitates research on proteins.

8. The product formed in the isomerization of mannose 6-phosphate
a) Fructose 6-phosphate
b) Glucose 6-phosphate
c) 2-phosphoglycerate
d) 3-phosphoglycerate
View Answer

Answer: a
Explanation: Mannose 6-phosphate is isomerized by phosphomannose isomerase to yield fructose 6-phosphate.

9. The first reaction of the pentose phosphate pathway is
a) Oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone
b) Oxidation of 6-phosphogluconate to ketopentose ribulose 5-phosphate
c) Reduction of 6-phosphoglucono-δ-lactone to glucose 6-phosphate
d) Reduction of ketopentose ribulose 5-phosphate to 6-phosphogluconate
View Answer

Answer: a
Explanation: The first reaction of the pentose phosphate pathway is the oxidation of glucose 6-phosphate to 6-phosphoglucono-δ-lactone by glucose 6-phosphate dehydrogenase.

10. Oxidation of 3 molecules of glucose by pentose phosphate pathway results in the production of
a) 3 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
b) 4 molecules of pentose, 6 molecules of NADPH and 3 molecules of CO2
c) 4 molecules of pentose, 3 molecules of NADPH and 3 molecules of CO2
d) 3 molecules of pentose, 4 molecules of NADPH and 3 molecules of CO2
View Answer

Answer: a
Explanation: Glucose 6-phosphate + 2NADP+ + H2O → ribose 5-phosphate + CO2 + 2NADPH + 2H+.
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Sanfoundry Global Education & Learning Series – Biochemistry.

To practice advanced questions and answers on all areas of Biochemistry, here is complete set of 1000+ Multiple Choice Questions and Answers.

« Prev Page - Biochemistry – Tricky Questions and Answers

« Biochemistry – Tricky Questions and Answers
Structural Analysis Questions and Answers – Tributary Areas »
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Deep Dive @ Sanfoundry:

  1. Organic Chemistry Questions and Answers
  2. Advanced Machining Processes Questions and Answers
  3. Unit Processes Questions and Answers
  4. Biochemistry Questions and Answers
  5. Biochemistry Questions and Answers – Coordinated Regulation of Glycolysis and Gluconeogenesis
  6. Biochemistry Questions and Answers – G Protein – Coupled Receptors and Second Messengers
  7. Biochemistry Questions and Answers – Feeder Pathways for Glycolysis
  8. Biochemistry Questions and Answers – Nitrogen Excretion and the Urea Cycle
  9. Biochemistry Questions and Answers – Glycolysis
  10. Biochemistry Questions and Answers – Storage Lipids
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