Biomolecules

Which of the following gives a positive test with ninhydrin ?

1. Polyvinyl chloride
2. Cellulose
3. Egg albumin
4. Starch

Coagulation of egg, on heating is because of :

1. Denaturation of protein occurs
2. Biological property of protein remains unchanged
3. Breaking of the peptide linkage in the primary structure of protein occurs
4. The secondary structure of protein remains unchanged

Which of the following is the correct structure of L-Glucose?

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

Match List I with List II Choose the correct answer from the options given below:

1. A-III, B-IV, C-II, D-I
2. A-IV, B-III, C-I, D-II
3. A-III, B-IV, C-I, D-II
4. A-IV, B-III, C-II, D-I

If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is :

1. CATTAGCT
2. TACGAAGT
3. ATGCGACT
4. GTACTTAC

The number of tripeptides formed by three different amino acids using each amino acid once is .

Match List I with List II

1. A-II, B-IV, C-III, D-I
2. A-III, B-II, C-I, D-IV
3. A-IV, B-I, C-III, D-II
4. A-I, B-IV, C-III, D-II

From the vitamins A, B1, B6, B12, C, D, E and K, the number of vitamins that can be stored in our body is .

Sugar which does not give reddish brown precipitate with Fehling's reagent, is :

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

The total number of correct statements, regarding the nucleic acids is . A. RNA is regarded as the reserve of genetic information B. DNA molecule self-duplicates during cell division C. DNA synthesizes proteins in the cell D. The message for the synthesis of particular proteins is present in DNA E. Identical DNA strands are transferred to daughter cells.