Which one of the following is a matching pair of a certain body feature and its value/count in a normal human adult?

• Urea- 5 - 10 mg/100 ml of blood

• Blood sugar (fasting) - 80 - 100 mg/100 ml

• Total blood volume - 3 - 4 litres

• ESR in Wintrobe method - 9 -15 mm in males and 20 - 34 mm in females

Which one of the following is a matching pair?

• Lubb - sharp closure of AV valves at the beginning of ventricular systole

• Dup - sudden opening of semilunar valves at the beginning of ventricular diastole

• Pulsation of the radial artery - valves in the blood vessels

• Initiation of the heart beat - Purkinje fibres

Which one of the following is a sesamoid bone?

• Pelvis

• Patella

• Pterygoid

• Pectoral girdle

4.

Photorespiration in C₃ plants starts from:

• phosphoglycerate

• phosphoglycolate

• glycerate

• glycine

A person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result of:

• a reduction in insulin secretion from pancreas

• a reduction in vasopressin secretion from posterior pituitary

• a fall in the glucose concentration in urine

• an increase in secretion of glucagon

An example of competitive inhibition of an enzyme is the inhibition of:

• succinic dehydrogenase by malonic acid

• cytochrome oxidase by cyanide

• hexokinase by glucose-6-phosphate

• carbonic anhydrase by carbon dioxide

Excessive stimulation of vagus nerve in humans may lead to:

• hoarse voice

• peptic ulcers

• efficient digestion of proteins

• irregular contractions of diaphragm

A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed

• on the blind spot

• behind the retina

• in front of the retina

• on the yellow spot

The source of somatostatin is same as that of

• thyroxine and calcitonin

• insulin and glucagon

• somatotropin and prolactin

• vasopresin and oxytocin

People recovering from long illness are often advised to include the alga Spirulina in their diet because it

• makes the food easy to digest

• is rich in proteins

• has antibiotic properties

• restores the intestinal microtlora