Biochemistry MCQs are very important test and often asked by various testing services and competitive exams around the world. Here you will find all the Important Biochemistry MCQs for Preparation.
The student can clear their concepts for Biochemistry online quiz by attempting it. Doing MCQs based Biochemistry will help you to check your understanding and identify areas of improvement.
Biochemistry Online MCQs with Answers
Which of the following is the primary energy storage molecule in cells?
a) Glucose
b) ATP
c) DNA
d) RNA
Which of the following is the monomer unit of proteins?
a) Amino acids
b) Nucleotides
c) Fatty acids
d) Monosaccharides
Which of the following is the process by which a double-stranded DNA molecule is separated into two single strands?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the major carbohydrate storage molecule in animals?
a) Glycogen
b) Starch
c) Cellulose
d) Chitin
Which of the following is the process by which genetic information is transferred from DNA to RNA?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the enzyme responsible for breaking down carbohydrates in the mouth?
a) Amylase
b) Lipase
c) Protease
d) Pepsin
Which of the following is the process by which amino acids are joined together to form a protein?
a) Transcription
b) Translation
c) Replication
d) Condensation
Which of the following is the primary component of cell membranes?
a) Proteins
b) Carbohydrates
c) Lipids
d) Nucleic acids
Which of the following is the process by which glucose is converted into pyruvate in the cytoplasm?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the molecule that carries the genetic information in cells?
a) DNA
b) RNA
c) ATP
d) Glucose
Which of the following is the process by which ATP is synthesized from ADP and inorganic phosphate?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the enzyme responsible for breaking down proteins in the stomach?
a) Amylase
b) Lipase
c) Protease
d) Pepsin
Which of the following is the process by which RNA is used to synthesize a protein?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the process by which a single-stranded RNA molecule is synthesized from a DNA template?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the process by which glucose is converted into pyruvate in the presence of oxygen?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the monomer unit of nucleic acids?
a) Amino acids
b) Nucleotides
c) Fatty acids
d) Monosaccharides
Which of the following is the process by which a double-stranded DNA molecule is replicated to produce two identical copies?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the primary storage form of lipids in plants?
a) Glycogen
b) Starch
c) Cellulose
d) Chitin
Which of the following is the process by which genetic information is used to synthesize a protein?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the enzyme responsible for breaking down lipids in the small intestine?
a) Amylase
b) Lipase
c) Protease
d) Pepsin
Which of the following is the process by which glucose is converted into lactic acid in the absence of oxygen?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Fermentation
Which of the following is the process by which glucose is converted into ATP in the presence of oxygen?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the process by which nucleotides are joined together to form a DNA molecule?
a) Transcription
b) Translation
c) Replication
d) Condensation
Which of the following is the process by which proteins are broken down into amino acids?
a) Hydrolysis
b) Condensation
c) Dehydration synthesis
d) Denaturation
Which of the following is the process by which RNA is used to synthesize a complementary RNA molecule?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the molecule that serves as a temporary carrier of energy in cells?
a) DNA
b) RNA
c) ATP
d) Glucose
Which of the following is the process by which glucose is converted into ATP in the cytoplasm?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the process by which lipids are broken down into fatty acids and glycerol?
a) Hydrolysis
b) Condensation
c) Dehydration synthesis
d) Denaturation
Which of the following is the process by which a protein’s three-dimensional structure is disrupted?
a) Denaturation
b) Hydrolysis
c) Condensation
d) Dehydration synthesis
Which of the following is the enzyme responsible for catalyzing the synthesis of DNA?
a) DNA polymerase
b) RNA polymerase
c) DNA ligase
d) DNA helicase
Which of the following is the process by which ATP is synthesized directly from ADP and inorganic phosphate?
a) Glycolysis
b) Krebs cycle
c) Substrate-level phosphorylation
d) Oxidative phosphorylation
Which of the following is the process by which glucose is converted into ATP using the energy released from the electron transport chain?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the process by which DNA is copied to produce a new DNA molecule?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the enzyme responsible for catalyzing the synthesis of RNA?
a) DNA polymerase
b) RNA polymerase
c) DNA ligase
d) DNA helicase
Which of the following is the process by which glucose is converted into pyruvate in the absence of oxygen?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Fermentation
Which of the following is the process by which ATP is synthesized using the energy released from the movement of protons across a membrane?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Chemiosmosis
Which of the following is the process by which glucose is converted into ATP in the presence of oxygen?
a) Glycolysis
b) Krebs cycle
c) Electron transport chain
d) Oxidative phosphorylation
Which of the following is the process by which lipids are synthesized from fatty acids and glycerol?
a) Hydrolysis
b) Condensation
c) Dehydration synthesis
d) Lipogenesis
Which of the following is the process by which proteins are synthesized using the genetic information carried by RNA?
a) Transcription
b) Translation
c) Replication
d) Denaturation
Which of the following is the process by which DNA is transcribed into RNA?
a) Transcription
b) Translation
c) Replication
d) Denaturation