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.

The glycolate produced diffuses into the membrane bounded organelles called____________?

A Glyoxisomes

B Peroxisomes

C Lysosomes

D Mitochondria

Review Detailed Answer

Correct Answer: Peroxisomes

The air spaces may comprise upto _________ of total volume of leaf surface?

A 30%

B 20%

C 40%

D 50%

Review Detailed Answer

Correct Answer: 40%

There are _________ stomata per square cm of leaf surface in Tobacco plants?

A 1200

B 12000

C 100,000

D 1000

Review Detailed Answer

Correct Answer: 100,000

Important factors which affect the capacity of haemoglobin to combine with oxygen is

A Temperature

B Carbon dioxide

C pH

D All of these

Review Detailed Answer

Correct Answer: All of these

Water is _________ times viscous than air?

A 50

B 1000

C 5000

D 8000

Review Detailed Answer

Correct Answer: 50

Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury.

A 10 mm

B 60 mm

C 10 cm

D 100 mm

Review Detailed Answer

Correct Answer: 100 mm

Oxygen contents per liter of air is____________?

A 10 ml

B 100 ml

C 200 ml

D 100ml

Review Detailed Answer

Correct Answer: 200 ml

The maximum amount of oxygen which normal human blood absorbs and carries at sea level is ________ per 100 ml of blood.

A 10 ml

B 20 ml

C 30 ml

D 40 ml

Review Detailed Answer

Correct Answer: 20 ml

Of the following, which one is better respiratory medium___________?

A Air

B Water

C Soil

D None of these

Review Detailed Answer

Correct Answer: Air

During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?

A 16-30

B 15-20

C 5?10

D 6?12

Review Detailed Answer

Correct Answer: 15-20

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Biology 1525 MCQs [All-Courses]

All Topics 1525

All Topics 1525

The glycolate produced diffuses into the membrane bounded organelles called____________?

The air spaces may comprise upto _________ of total volume of leaf surface?

There are _________ stomata per square cm of leaf surface in Tobacco plants?

Important factors which affect the capacity of haemoglobin to combine with oxygen is

Water is _________ times viscous than air?

Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury.

Oxygen contents per liter of air is____________?

The maximum amount of oxygen which normal human blood absorbs and carries at sea level is ________ per 100 ml of blood.

Of the following, which one is better respiratory medium___________?

During rest the breathing occurs rhythmically at the frequency of _________ times per minute in human?