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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.

helical structure is kept by the formation of _________ bonds among amino acids molecules?

A H bonds

B Disulphide Bond

C Ionic bond

D Hydrophobic bonds

Review Detailed Answer

Correct Answer: H bonds

Which of the following occurs in anaerobic respiration but not in aerobic respiration?

A Release of CO2

B Reduction of NAD

C Formation of ATP

D Production of ethanol from acetaldehyde

Review Detailed Answer

Correct Answer: Production of ethanol from acetaldehyde

Which of the following does not show quaternary structure____________?

A Haemoglobin

B Pepsin

C Fibrin

D Insulin

Review Detailed Answer

Correct Answer: Fibrin

Which structural organization is most common in globular proteins____________?

A Primary

B Secondary

C Tertiary

D Quaternary

Review Detailed Answer

Correct Answer: Tertiary

Amphoixus is a__________?

A Chordate

B Protochordate

C Lower chordate

D All of these

Review Detailed Answer

Correct Answer: All of these

The simplest of oxygen producting photosynthetic organisms are____________?

A Algae

B Bacteria

C Cyanobacteria

D Chlamydomonas

Review Detailed Answer

Correct Answer: Cyanobacteria

Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________?

A Globular proteins

B Fibrous Proteins

C Both a and b

D None of these

Review Detailed Answer

Correct Answer: Globular proteins

Membranes of the grane are sites where?

A Oxygen is stored

B Food is stored

C Sunlight is trapped

D CO2 is stored.

Review Detailed Answer

Correct Answer: Sunlight is trapped

Each turn of DNA contain ____________ nitrogenous base pairs?

A 5

B 10

C 20

D 25

Review Detailed Answer

Correct Answer: 10

Protein coasts of viruses are synthesized in____________?

A Lytic cycle

B Lysogenic cycle

C Both a & b

D All of these

Review Detailed Answer

Correct Answer: Lytic cycle

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Biology 1525 MCQs [All-Courses]

All Topics 1525

All Topics 1525

helical structure is kept by the formation of _________ bonds among amino acids molecules?

Which of the following occurs in anaerobic respiration but not in aerobic respiration?

Which of the following does not show quaternary structure____________?

Which structural organization is most common in globular proteins____________?

Amphoixus is a__________?

The simplest of oxygen producting photosynthetic organisms are____________?

Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________?

Membranes of the grane are sites where?

Each turn of DNA contain ____________ nitrogenous base pairs?

Protein coasts of viruses are synthesized in____________?