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.

Amoeboid movements and movement of cyclosis is due to_________?

A Microfilaments

B Microtubules

C Intermediate filaments

D Cytoskeleton

Review Detailed Answer

Correct Answer: Microfilaments

Which step causes activation of catalytic site of an enzyme__________________?

A Change in pH of the surroundings.

B Formation of Enzyme Susstrate complex.

C Change in the charge of the active site.

D Change in temperature

Review Detailed Answer

Correct Answer: Formation of Enzyme Susstrate complex.

Lock and Key model was proposed by______________?

A Emil Fischer

B Koshland

C Robin Williams

D Rudolph Virchow

Review Detailed Answer

Correct Answer: Emil Fischer

Ribonucleo-protein particles are the name of__________?

A DNA

B Nucleus

C Eukaryotic ribosomes

D RNA

Review Detailed Answer

Correct Answer: Eukaryotic ribosomes

Chlorophyll is a/an _____ molecule?

A Inorganic

B Cationic

C Anionic

D Organic

Review Detailed Answer

Correct Answer: Organic

Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?

A F.Miescher

B Chargaff

C Watson & Crick

D Harshay & Chase

Review Detailed Answer

Correct Answer: Chargaff

The type of plastids which help in pollination is_________?

A Chromoplasts

B Leucoplasts

C Chloroplasts

D All of these

Review Detailed Answer

Correct Answer: Chromoplasts

Sickle cell anemia is an example of_________________?

A Chromosomal aberration

B Insertion of gene

C Deletion of gene

D Point mutation

Review Detailed Answer

Correct Answer: Point mutation

Embryonic induction is caused by part developing from_____________?

A Endoderm

B Ectoderm

C Mesoderm

D Extraembryonic layers

Review Detailed Answer

Correct Answer: Mesoderm

Which of the following is an autosomal disorder______________?

A Down’s syndrome

B Klinifelter’s syndrome

C Turner’s syndrome

D Jacob’s syndrome

Review Detailed Answer

Correct Answer: Down’s syndrome

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Biology 1525 MCQs [All-Courses]

All Topics 1525

All Topics 1525

Amoeboid movements and movement of cyclosis is due to_________?

Which step causes activation of catalytic site of an enzyme__________________?

Lock and Key model was proposed by______________?

Ribonucleo-protein particles are the name of__________?

Chlorophyll is a/an _____ molecule?

Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?

The type of plastids which help in pollination is_________?

Sickle cell anemia is an example of_________________?

Embryonic induction is caused by part developing from_____________?

Which of the following is an autosomal disorder______________?