Biomolecules Test 10

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Biomolecules Test 10

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Question 1
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Palmitic acid is an unsaturated fatty acid.
Reason : These are fatty acids with double bond.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Palmitic acid is a saturated fatty acid. These are fatty acids without double bond.
Question 2
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Glutamate pyruvate transaminase is a transferase enzyme.
Reason : They transfer group from one molecule to another.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Transferases transfer group from one molecule to another e.g., glutamate pyruvate transaminase.
Question 3
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : In peroxidase, haemoglobin, myoglobin and catalase, haem is prosthetic group.
Reason : Prosthetic groups are non-protein organic factors which are firmly attached to the apoenzyme.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Prosthetic groups are non-protein organic factors which are firmly attached to the apoenzyme. e.g. In peroxidase, haemoglobin, myoglobin and catalase, haem is prosthetic group.
Question 4
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Lipids are not strictly macromolecules.
Reason : Lipids are indeed small molecular weight but because of their association with membranes separate in the macromolecular fraction.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

The molecular weights of macromolecules ranges to ten thousand Daltons and above. However, lipids, whose molecular weights do not exceed 800 Da, that comes under macromolecular fraction. Lipids are also arranged into structures like cell membrane and other membranes. On grinding, these membrane fragments in the form of vesicles get separated along with the acid insoluble pool and hence in the macromolecular fraction. Hence, lipids are not strictly macromolecules.
Question 5
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Lysine is an essential amino acid.
Reason : It can be synthesized in our body to meet the biological needs.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Lysine is an essential amino acid because it cannot be synthesized by the body and therefore, need to be supplied through the diet.
The amino acids that can be synthesized in our body to meet the biological needs are called as non-essential amino acid e.g., glycine.
Question 6
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : ATP is known as the energy currency of the cell.
Reason : ATP can pick up energy where it is being liberated and supply the same where it is being consumed.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

ATP is called energy currency of the cell. It can pick up energy where it is being liberated and supply the same where it is being consumed.
Question 7
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Haemoglobin has quaternary structure.
Reason : Haemoglobin has four chains, two α-chains and two β-chains.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Large proteins such as haemoglobin have quaternary structure. It has four chains, two α-chains and two β-chains.
Question 8
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Increase in substrate concentration increases the rate of reaction.
Reason : Substrate molecules occupy one and more active sites.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Increase in substrate concentration increases the rate of reaction. The enhanced rate is due to occupation of one and more active sites by the substrate molecules.
Question 9
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Nucleic acids exhibit secondary structure.
Reason : It is the linear sequence of amino acids in a polypeptide chain.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

It is a linear sequences of nucleotides in a polynucleotide chain. Primary structure of protein is the linear sequence of amino acids in a polypeptide chain reveals primary structure of protein.
Question 10
1 / -0

Directions : In the following question, the Assertions (A) and Reason (R) have been put forward. Read both the statements and choose the correct option from the following.
Assertion : Rubber is a secondary metabolite
Reason : Secondary metabolites are found in animal as well as plant tissues.

A
A. Both A and R are true, and R is the correct explanation of A.

B
B. Both A and R are true, but R is not the correct explanation of A.

C
C. A is true but R is false.

D
D. Both A and R are false.

Solution

Rubber is a secondary metabolite. Secondary metabolites are chemicals produced by plants for which no role has been found yet in growth, photosynthesis, reproduction or other primary functions.

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Biomolecules Test 10

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Biomolecules Test 10

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Question 1

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 2

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 3

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 4

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 5

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 6

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 7

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 8

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 9

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

Question 10

A. Both A and R are true, and R is the correct explanation of A.

B. Both A and R are true, but R is not the correct explanation of A.

C. A is true but R is false.

D. Both A and R are false.

Solution

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