Cellulose is a straight-chain polysaccharide composed of only :
1. D-glucose units joined by - glycosidic linkage.
2. D-glucose units joined by - glycosidic linkage.
3. D-galactose units joined by - glycosidic linkage.
4. D-galactose units joined by - glycosidic linkage.
An insoluble biomolecule in water is-
1. | -keratin | 2. | Haemoglobin |
3. | Ribonuclease | 4. | Adenine |
The human body does not produce :
1. | DNA | 2. | Vitamins |
3. | Hormones | 4. | Enzymes |
Insulin regulates the metabolism of :
1. | Minerals | 2. | Amino acids |
3. | Glucose | 4. | Vitamins |
A linkage present in proteins and peptides is:
1. | 2. | ||
3. | 4. |
An optically inactive amino acid is-
1. | Lactic acid | 2. | Serine |
3. | Alanine | 4. | Glycine |
Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor. M is:
1. | Sr | 2. | Be |
3. | Mg | 4. | Ca |
The non-essential amino acid among the following is:
1. Lysine
2. Valine
3. Leucine
4. Alanine
1. Anomers
2. Epimers
3. Enantiomers
4. Diastereoisomers
During the process of digestion, the proteins present in food materials are
hydrolysed to amino acids as shown below.
Proteins \(\xrightarrow[]{\textbf{Enzyme(A)}}\mathrm{}\) Polypeptides \(\xrightarrow[]{\textbf{Enzyme(B)}}\mathrm{}\) Amino acids
Enzymes (A) and (B) are respectively:
1. | Amylase and maltase | 2. | Diastase and lipase |
3. | Pepsin and trypsin | 4. | Invertase and zymase |