In a protein molecule, various amino acids are linked together by
(1) b-glycosidic bond
(2) Peptide bond
(3) Dative bond
(4) a-glycosidic bond
1. | The sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose |
2. | The sugar component in RNA is arabinose and the sugar component in DNA is ribose |
3. | The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose |
4. |
The sugar component in RNA is arabinose and the sugar component in DNA is 2’-deoxyribose
|
1. | β -glycosidic bond | 2. | Peptide bond |
3. | Dative bond | 4. | α -glycosidic bond |
1. | Aniline | 2. | Acetanilide |
3. | Benzoic acid | 4. | Glycine |
Which of the following statements is not correct?
1. | Ovalbumin is a simple food reserve in egg white. |
2. | Blood proteins thrombin and fibrinogen are involved in blood clotting. |
3. | Denaturation makes the proteins more active. |
4. | Insulin maintains sugar level in the blood of the human body. |
The correct corresponding order of names of four aldoses with configuration given below respectively, is:
1. L-erythrose, L-threose, L-erythrose, D-threose
2. D-threose, D-erythrose, L-threose, L-erythrose
3. L-erythrose, L-threose, D-erythrose, D-threose
4. D-erythrose, D-threose, L-erythrose, L-threose
The central dogma of molecular genetics states that the genetic information flows from:
1. amino acid - proteins - DNA
2. DNA - carbohydrates - proteins
3. DNA - RNA - proteins
4. DNA - RNA - Carbohydrates
The difference between amylose and amylopectin is:
1. | Amylopectin has 1→4 α - linkage and 1→6 α-linkage. |
2. | Amylose has 1→4 α-linkage and 1 → 6 β-linkage. |
3. | Amylopectin has 1 → 4 α-linkage and 1 → 6 β-linkage. |
4. | Amylose is made up of glucose and galactose. |
In humans, the main oxygen carrier in the blood is -
1. Hemocyanin
2. Proteins
3. Haemoglobin
4. Both microorganisms and haemoglobin.