Amino Acids

Q.

Match the following and choose the correct combination from the options given:

1. A-3; B-4; C-1; D-2

2. A-2; B-3; C-4; D-1

3. A-1; B-2; C-3; D-4

4. A-4; B-3; C-2; D-1

5. A-4; B-3; C-1; D-2

Q. The charged molecule which is electrically neutral is known as:

1. Peptide
2. Amino acid
3. Zwitterion
4. Amide

Q. Which of the following statements are true
A. Water solubility of an amino acid is maximum at a pH when concentrations of anions and cations are equal.
B. Amino acids can be detected by ninhydrin test
C. On reacting with nitrous acid amino acids release $N_2$

1. All
2. B and C
3. A and B
4. only A

Q.

Based on the functional nature of carbon, an amino acid has a central carbon atom with 4 units called __

1. carboxyl group, amine group, R group and H atom.

2. sugar group, carboxyl group, sulfur group and H atom.

3. lipid group, amine group, R group and H atom.

4. nitrogen group, carbon group, sulfur group and H atom.

Q. All statements about amino acids are true except

1. they are also called substituted methanes
2. alanine is the simplest amino acid
3. they can be basic, acidic or neutral in nature
4. condensation of alpha-amino acids form proteins

Q. According to the graph given below, zwitterions for an amino acid X are most likely to be obtained in a solution of pH

1. 1
2. 2
3. 6
4. 10

Q. Name the
protein that masks the active binding sites for myosin on the actin filaments.

Q.

Which one of these is helpful for muscle contraction?

1. Sarcoplasmic ER

2. Smooth ER

3. Rough ER

4. Nucleus

Q.

carotine is the same pigment used for making our nails and hair, right?

Q. How many amino acids will be coded by the mRNA sequence – 5CCCUCAUAGUCA¹UAC3 if a adenosine residue is inserted after 12^th nucleotide?
(1) Five amino acids (b) Six amino acids (c) Two amino acids (d) Three amino acids

Q.

The enzyme that combines with non-protein part to form functional enzyme is?