The enzyme enterokinase helps in the conversion of 

1. pepsinogen into pepsin

2. trypsinogen into trypsin

3. caseinogen into casein

4. proteins into polypeptides

Cholecystokinin and duocrinin are secreted by

1. adrenal cortex

2. thyroid gland

3. pancreas

4. intestine

Inhibition of gastric and stimulation of gastric, pancreatic and bile secretions are controlled by hormones 

1. gastrin, secretin, enterokinin and cholecystokinin

2. enterogasterone, gastrin, pancreozymin and cholecystokinin

3. gastrin, enterogasterone, cholecystokinin and pancreozymin

4. secretin, enterogasterone, gastrin and enterokinin

Which one of the following is a matching pair of a substrate and its particular digestive enzyme? 

1. Maltose     - Maltase

2. Lactose     - Renin     

3. Starch       - Steapsin

4. Casein       - Chymotrypsin

Lactose is composed of

1. glucose + fructose

2. glucose + glucose

3. glucose + galactose

4. fructose + galactose