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Enzymatic Functions and Biochemical Reactions Quiz

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Which enzyme is responsible for breaking down carbohydrates in the mouth?

Amylase

Explanation

Amylase breaks down carbohydrates into sugars in the mouth.

Which enzyme is responsible for converting pepsinogen to pepsin in the stomach?

Renin

Explanation

Renin converts pepsinogen into pepsin, which is an active protease in the stomach.

Which enzyme is responsible for converting lactose into glucose and galactose?

Lactase

Explanation

Lactase catalyzes the breakdown of lactose into glucose and galactose.

Which enzyme is responsible for the conversion of glucose to pyruvate in glycolysis?

Pyruvate kinase

Explanation

Pyruvate kinase catalyzes the conversion of phosphoenolpyruvate (PEP) to pyruvate in glycolysis.

Which enzyme is responsible for converting fibrinogen to fibrin during blood clotting?

Thrombin

Explanation

Thrombin cleaves fibrinogen to form fibrin, which is the main protein in blood clots.

What is the primary function of DNA polymerase in DNA replication?

Synthesizing new DNA strands

Explanation

DNA polymerase synthesizes new DNA strands using a template DNA strand.

Which of the following is an example of an irreversible enzyme inhibitor?

Noncompetitive inhibitor

Explanation

A noncompetitive inhibitor binds to an enzyme at a site other than the active site, permanently inactivating it.

In photosynthesis, what is the primary function of the enzyme Rubisco?

Fixing carbon dioxide

Explanation

Rubisco catalyzes the fixation of carbon dioxide from the atmosphere during photosynthesis.

Which enzyme is involved in the breakdown of triglycerides into fatty acids and glycerol?

Lipase

Explanation

Lipase catalyzes the breakdown of triglycerides into fatty acids and glycerol.

#10

What is the primary function of reverse transcriptase in the process of reverse transcription?

Synthesizing DNA from RNA

Explanation

Reverse transcriptase synthesizes a DNA strand from an RNA template during reverse transcription.

#11

In glycolysis, which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate?

Isomerase

Explanation

An isomerase catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate in glycolysis.

#12

What is the role of helicase in DNA replication?

Unwinding the DNA helix

Explanation

Helicase unwinds the DNA double helix during DNA replication.

#13

What is the function of the enzyme DNA ligase in DNA replication?

Joining Okazaki fragments

Explanation

DNA ligase joins Okazaki fragments on the lagging strand during DNA replication.

#14

In the Krebs cycle, which enzyme catalyzes the conversion of isocitrate to alpha-ketoglutarate?

Isocitrate dehydrogenase

Explanation

Isocitrate dehydrogenase catalyzes the conversion of isocitrate to alpha-ketoglutarate in the Krebs cycle.

#15

In protein synthesis, which enzyme is responsible for bringing amino acids to the ribosome during translation?

Aminoacyl-tRNA synthetase

Explanation

Aminoacyl-tRNA synthetase attaches the correct amino acid to its corresponding tRNA molecule during translation.

Enzymatic Functions and Biochemical Reactions Quiz

Which enzyme is responsible for breaking down carbohydrates in the mouth?

Which enzyme is responsible for converting pepsinogen to pepsin in the stomach?

Which enzyme is responsible for converting lactose into glucose and galactose?

Which enzyme is responsible for the conversion of glucose to pyruvate in glycolysis?

Which enzyme is responsible for converting fibrinogen to fibrin during blood clotting?

What is the primary function of DNA polymerase in DNA replication?

Which of the following is an example of an irreversible enzyme inhibitor?

In photosynthesis, what is the primary function of the enzyme Rubisco?

Which enzyme is involved in the breakdown of triglycerides into fatty acids and glycerol?

What is the primary function of reverse transcriptase in the process of reverse transcription?

In glycolysis, which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate?

What is the role of helicase in DNA replication?

What is the function of the enzyme DNA ligase in DNA replication?

In the Krebs cycle, which enzyme catalyzes the conversion of isocitrate to alpha-ketoglutarate?

In protein synthesis, which enzyme is responsible for bringing amino acids to the ribosome during translation?

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