The vital capacity of lungs is equal to

• 4000 ml

• 5000 ml

• 6000 ml

• 7000 ml

The volume of 'anatomical dead space' air is normally

• 230 mL

• 210 mL

• 190 mL

• 150 mL

Assertion: Smoking causes oxygen deficiency in the body.

Reason: Carbon monoxide when inhaled while smoking, combines with haemoglobin to form chemically stable compound.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Hiccups can be best described as

• forceful sudden expiration

• forceful contraction of intercostal muscles during deep breathing

• vibration of the soft palate during breathing while sleeping

• jerky incomplete inspiration.

Oxygen binding to haemoglobin in blood is

• directly proportional to the concentration of CO₂ in the medium

• inversely proportional to the concentration of CO₂ in the medium

• directly proportional to the concentration of CO in the medium

• independent of the concentration of CO in the medium

At high altitude, RBC's of human blood will

• increase in number

• decrease in number

• decrease in size

• increase in size

What will be the number of Calvin cycles to generate one molecule of hexose?

• 4

• 6

• 8

• 9

During anaerobic conditions, the rate of glycolysis increases, is called

• compensation point

• extinction point

• Warburg effect

• Pasteur effect

Which part of the nephrons is impermeable to water

• Proximal convoluted tubule

• Distal convoluted tubule

• Ascending limb of loop of Henle

• Descending limb of loop of Henle

Which of the following products are obtained by anaerobic respiration from yeast?

• Alcohols

• CO₂

• Beer and Wine

• All of the above