Exoskeleton of arthropods is composed of :
1. Glucosamine
2. Cutin
3. Cellulose
4. Chitin
Read the following statements on lipids and find out correct set of statements:
a: | Lecithin found in the plasma membrane is a glycolipid. |
b: | Saturated fatty acids possess one or more c=c bonds. |
c: | Gingely oil has lower melting point, hence remains as oil in winter. |
d: | Lipids are generally insoluble in water but soluble in some organic solvents. |
e: | When fatty acid is esterified with glycerol, monoglycerides are formed. |
Choose the correct answer from the options given below:
1. (a), (b) and (d) only
2. (a), (b) and (c) only
3. (a), (d) and (e) only
4. (c), (d) and (e) only
List - I (Biological Molecules) | List - II (Biological functions) |
(a) Glycogen | (i) Hormone |
(b) Globulin | (ii) Biocatalyst |
(c) Steroids | (iii) Antibody |
(d) Thrombin | (iv) Storage product |
(a) | (b) | (c) | (d) | |
1. | (iv) | (iii) | (i) | (ii) |
2. | (iii) | (ii) | (iv) | (i) |
3. | (iv) | (ii) | (i) | (iii) |
4. | (ii) | (iv) | (iii) | (i) |
Given below are two statements:
Statement I: | Cellulose is a polymeric polysaccharide |
Statement II: | The building blocks of cellulose are glucose molecules |
In the light of the above statements , choose the correct answer from the options given below:
1. | Statement I is correct but Statements II is incorrect. |
2. | Statements I is incorrect but Statements II is correct. |
3. | Both Statements I and Statements II are correct. |
4. | Both Statements I and Statements II are false. |
Which of the following bond is formed as a result of reaction of carboxyl group of one amino acid with amino group of other amino acids with elimination of water?
1. Phosphodiester Bond
2. Hydrogen Bond
3. Glycosidic Bond
4. Peptide Bond
In a reaction catalyzed by an enzyme, which of the following statements is correct ?
1. | Enzymes decrease the activation energy for formation of transition state. |
2. | Enzymes make transition form substrate to product more difficult. |
3. | Enzymes increase the activation energy for formation of transition state. |
4. | Enzyme-substrate complex formed during a reaction lasts for a very long time. |
List-I | List-II | ||
(A) | Adenine | (I) | Pigment |
(B) | Anthocyanin | (II) | Polysaccharide |
(C) | Chitin | (III) | Alkaloid |
(D) | Codeine | (IV) | Purine |
(A) | (B) | (C) | (D) | |
1. | (IV) | (I) | (II) | (III) |
2. | (IV) | (III) | (II) | (I) |
3. | (III) | (I) | (IV) | (II) |
4. | (I) | (IV) | (III) | (II) |
Statement I: | Amino acids have a property of ionizable nature of –NH2 and –COOH groups, hence have different structures at different pH. |
Statement II: | Amino acids can exist as Zwitterionic form at acidic and basic pH. |
1. | Both Statement I and Statement II are correct. |
2. | Both Statement I and Statement II are Incorrect. |
3. | Statement I is correct but Statement II is incorrect. |
4. | Statement I is incorrect but Statement II is correct. |