The segment of DNA, that acts as the instrumental manual for the synthesis of the protein is:
1. | Nucleotide | 2. | Ribose |
3. | Gene | 4. | Nucleoside |
Which of the following hormones contains iodine?
1. Insulin
2. Testosterone
3. Adrenaline
4. Thyroxine
1. | Thyroxine | 2. | Oxypurin |
3. | Insulin | 4. | Progesterone |
In DNA, the complementary bases are:
1. Adenine and thymine; guanine and cytosine
2. Adenine and thymine; guanine and uracil
3. Adenine and guanine, thymine and cytosine
4. Uracil and adenine; cytosine and guanine
Which one of the following vitamins is water-soluble?
1. | Vitamin-B | 2. | Vitamin-E |
3. | Vitamin-K | 4. | Vitamin-A |
RNA and DNA are chiral molecules due to:
1. L- sugar component
2. Chiral bases
3. Chiral phosphate exter unit
4. D- sugar component
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 |
Which one of the following is a peptide hormone?
1. Glucagon
2. Testosterone
3. Thyroxin
4. Adernaline
Which one of the following does not exhibit the phenomenon of mutarotation?
1. (+) Sucrose
2. (+) Lactose
3. (+) Maltose=
4. (-) Fructose
Which one of the following statements is not true regarding (+) lactose?
1. | (+) lactose is a β -glycoside and a molecule of D(+) galactose |
2. | (+) lactose is a reducing sugar and does not exhibit mutarotation |
3. | (+) lactose, C 12 H 22 O 11 contains 8-0 H groups |
4. | On hydrolysis (+) lactose gives equal amount of D(+) glucose and D(+) galactose |