(a) Name the main reserve food material of animal cells, also called animal starch.
(b) Which colour this compound gives on reaction with iodine solution ?
( c) efine the terms glycogenesis and glycogenolysis.

Identify A to E. Pyrolusite on heating with KOH in the presence of air gives a dark green compound (A). The solution of (A) on treatment with H_2SO_4 gives a purple coloured compound (B) , which gives the following reactions: (a). KI on reaction with alkaline solution of (B) changes into a compound (C). (b). The colour of the compoud (B) disappears on treatment with the acidic solution of FeSO_4 . (c). With conc. H_2SO_4 compound (B) gives (D) which can compose to yield (E) and oxygen.

Identify A to E. Pyrolusite on heating with KOH in the presence of air gives a dark green compound (A). The solution of (A) on treatment with H_2SO_4 gives a purple coloured compound (B) , which gives the following reactions: (a). KI on reaction with alkaline solution of (B) changes into a compound (C). (b). The colour of the compoud (B) disappears on treatment with the acidic solution of FeSO_4 . (c). With conc. H_2SO_4 compound (B) gives (D) which can compose to yield (E) and oxygen.

Fill in the blanks : (i) Glycogen is the main reserve food material of _______ cells. It is known as the ______ . (ii) Starch is the reserve food material of ______ cells. It has two components : amylose and _______ . (iii) Some important heteropolysaccharides include hyaluronic acid, heparin, chondroitin sulphate etc. which are together grouped as _______ . (iv) _________ of connective tissue, actin and myosin of muscles and ______ of scales, feathers, hairs etc. are fibrous proteins. (v) DNA has ______ and ________ (double-ringed purines) and _______ and _______ (single-ringed pyrimidines). (vi) There are three major types of RNA in every cell : m- RNA, ______ and _____ .

An organism A which cannot move from one place to another, makes a simple food B from the substances C and D available in the environment. This food is made in the presence of a green coloured substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. The food H gives a blue-blank colour with dilute iodine solution. (a) What is (i) organism A (ii) food B, and (iii) food H? (b) What are C and D ? (c) Name (i) green coloured substance E, and (ii) organ F. (d) What is the prcoess G ?

Study the given statements and select the correct answer. (i) Right end of a polysaccharide chain is called reducing end while left end is called non-reducing end. (ii) Starch can hold cellulose being non-helical, cannot hold iodine. (iii) Starch and glycogen are branched molecules. (iv) Starch and glycogen are the reserve food materials of plants and animals, respectively.

Study the given statements and select the correct answer. (i) Right end of a polysaccharide chain is called reducing end while left end is called non-reducing end. (ii) Starch can hold cellulose being non-helical, cannot hold iodine. (iii) Starch and glycogen are branched molecules. (iv) Starch and glycogen are the reserve food materials of plants and animals, respectively.

Study the given statements and select the correct answer. (i) Right end of a polysaccharide chain is called reducing end while left end is called non-reducing end. (ii) Starch can hold cellulose being non-helical, cannot hold iodine. (iii) Starch and glycogen are branched molecules. (iv) Starch and glycogen are the reserve food materials of plants and animals, respectively.