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
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. |
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. |
Exoskeleton of arthropods is composed of :
1. Glucosamine
2. Cutin
3. Cellulose
4. Chitin
1. | It breaks down when iodine reacts with it. |
2. | It is a disaccharide. |
3. | It is a helical molecule. |
4. | It does not contain complex helices and hence cannot hold iodine molecules. |
1. | Dinitrogenase | 2. | Succinic dehydrogenase |
3. | Amylase | 4. | Lipase |
Statement I: | Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. |
Statement II: | When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. |
Statement I: | A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal). |
Statement II: | \(\alpha\) type and two subunits of ẞ type.) | Adult human haemoglobin, consists of 4 subunits (two subunits of
1. | Statement I is false but Statement II is true. |
2. | Both Statement I and Statement II are true. |
3. | Both Statement I and Statement II are false. |
4. | Statement I is true but Statement II is false. |