Biomolecules

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 a human body.

The correct statement regarding RNA and DNA, respectively is

1. The sugar component in RNA is arabinose and the sugar component in DNA is ribose
2. The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose
3. The sugar component in RNA is arabinose and the sugar component in DNA is 2'-deoxyribose
4. The sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose.

In a protein molecule various amino acids are linked together by

1. peptide bond
2. dative bond
3. -glycosidic bond
4. -glycosidic bond.

Which one given below is a non-reducing sugar?

1. Glucose
2. Sucrose
3. Maltose
4. Lactose

The central dogma of molecular genetics states that the genetic information flows from

1. Amino acids Proteins DNA
2. DNA Carbohydrates Proteins
3. DNA RNA Proteins
4. DNA RNA Carbohydrates

The correct corresponding order of names of four aldoses with configuration given below [figure] 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

Which of the following hormones is produced under the condition of stress which stimulate glycogenolysis in the liver of human beings?

1. Thyroxine
2. Insulin
3. Adrenaline
4. Estradiol

D(+)-glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be

1. [figure]
2. [figure]
3. [figure]
4. [figure]

In DNA, the linkages between different nitrogenous bases are

1. phosphate linkage
2. H-bonding
3. glycosidic linkage
4. peptide linkage

Deficiency of vitamin B1 causes the disease

1. convulsions
2. beri-beri
3. cheilosis
4. sterility