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 of the following is most constant abiotic component of ecosystem___________?

A Air

B Water

C Land

D Gravity

Review Detailed Answer

Correct Answer: Gravity

Percentage of proteins in cell membrane is____________?

A 20-40%

B 40-50%

C 60-80%

D 80-100%

Review Detailed Answer

Correct Answer: 60-80%

_____________ supported theory of special creation?

A Linnaeus

B Aristotle

C Mendel

D Lamarck

Review Detailed Answer

Correct Answer: Linnaeus

In Hardy-Weinberg formula P2 represents frequency of_____________?

A Recessive allele

B Dominant allele

C Homozygous dominant individual

D Homozygous recessive individual

Review Detailed Answer

Correct Answer: Homozygous dominant individual

Who first observed and thus hypothesized that new cells are formed from previously existing living cell?

A Theodor Schwann and Schleiden

B Rudolph Virchows

C Louis Pasteur

D Both b and c

Review Detailed Answer

Correct Answer: Rudolph Virchows

In condition of high temperature, following does not occur or occurs at low level__________?

A Vasodilation

B Activation of sweat glands

C Thermogenesis

D Evaporative cooling

Review Detailed Answer

Correct Answer: Thermogenesis

“lubb” sound is produced due to___________________?

A Opening of inlet valve

B Closure of inlet valve

C Opening of outlet valve

D Closure of outlet valve

Review Detailed Answer

Correct Answer: Closure of inlet valve

Adult birds normally possess only one functional____________?

A Ureter

B Ovary

C Lung

D Testis

Review Detailed Answer

Correct Answer: Ovary

Proteins comprise of ___________% of the total dry weight of a cell?

A 40%

B 50%

C 60%

D 70%

Review Detailed Answer

Correct Answer: 50%

Double fertilization occurs in_________?

A All plants

B All seed plants

C Gymnosperms

D Angiosperms

Review Detailed Answer

Correct Answer: Angiosperms

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Biology 1525 MCQs [All-Courses]

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All Topics 1525

Which of the following is most constant abiotic component of ecosystem___________?

Percentage of proteins in cell membrane is____________?

_____________ supported theory of special creation?

In Hardy-Weinberg formula P2 represents frequency of_____________?

Who first observed and thus hypothesized that new cells are formed from previously existing living cell?

In condition of high temperature, following does not occur or occurs at low level__________?

“lubb” sound is produced due to___________________?

Adult birds normally possess only one functional____________?

Proteins comprise of ___________% of the total dry weight of a cell?

Double fertilization occurs in_________?