Biology 1525 MCQs [All-Courses]

Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

Which statement about enzyme is incorrect_________________?

A Some of them consist solely of protein with no non protein part.

B They catalyze a chemical reaction without being utilized.

C All enzymes are fibrous Proteins.

D They without their cofactor are called apoenzyme.

Review Detailed Answer

Correct Answer: All enzymes are fibrous Proteins.

Centrioles are composed of ________ triplets of microtubules.

A 3

B 9

C 10

D 15

Review Detailed Answer

Correct Answer: 9

An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?

A Apoenzyme

B Holoenzyme

C Activated enzyme

D Both b and c

Review Detailed Answer

Correct Answer: Both b and c

A cofactor made of inorganic ion which is detachable is called__________________?

A Prosthetic group

B Coenzyme

C Activator

D Cofactor

Review Detailed Answer

Correct Answer: Activator

In golgi apparatus the maturing face is____________?

A Biconcave

B Convex

C Spherical

D Concave

Review Detailed Answer

Correct Answer: Concave

In which of the following location enzymes controlling cellular respiration are present____________?

A Nucleus

B Chlorophast

C Milochondria

D Ribosome

Review Detailed Answer

Correct Answer: Milochondria

Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____________________?

A Cofactor

B Coenzymes

C Activator

D Enzymes

Review Detailed Answer

Correct Answer: Enzymes

Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by___________?

A Ribosomes

B Cytoplasm

C Golgi apparatus

D Endoplasmic reticulum

Review Detailed Answer

Correct Answer: Golgi apparatus

Which one forms the raw material for coenzymes_______________________?

A Vitamins

B Carbohydrates

C Proteins

D Metals

Review Detailed Answer

Correct Answer: Vitamins

Enzymes __________________ the activation energy of a chemical reaction?

A Increases

B Decreases

C Does not effect

D Increases or decreases depending upon individual enzyme

Review Detailed Answer

Correct Answer: Decreases

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Biology 1525 MCQs [All-Courses]

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All Topics 1525

Which statement about enzyme is incorrect_________________?

Centrioles are composed of ________ triplets of microtubules.

An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?

A cofactor made of inorganic ion which is detachable is called__________________?

In golgi apparatus the maturing face is____________?

In which of the following location enzymes controlling cellular respiration are present____________?

Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____________________?

Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by___________?

Which one forms the raw material for coenzymes_______________________?

Enzymes __________________ the activation energy of a chemical reaction?