question_answer

Sketch a schematic flow chart showing the breakdown of glucose in a cell to provide energy in the following conditions (a) In the presence of oxygen. (b) In the absence of oxygen. (c) Where there is a lack of oxygen.                                 Or (a) Draw a diagram to show the nutrition in Amoeba and label the parts used for this purpose. Mention any other purpose served by this part other than nutrition. (b) Name the glands associated with digestion of starch in human digestive tract and mention their role. (c) How is required pH maintained in the stomach and small intestine?  

Answer:

                                                      (5)                                                Or   Pseudopodia serves the purpose of locomotion apart from nutrition.         (2) (b) The salivary gland is associated with digestion of starch in human digestive tract. It secretes saliva with the help of enzyme salivary amylase which converts starch into maltose (sugar).  (1½) (c) Gastric glands present on the walls of the stomach release HCl acid. It creates an acidic medium, which facilitates the action of enzyme pepsin. Bile juice form liver makes the food alkaline in small intestine for the pancreatic enzymes to act.                 (1½ )