MH SET 2021 Paper 2 Life Sciences Question Paper (26-Sep-2021)

Question 1

Sodium Dodecyl Sulphate (SDS) is used while separating proteins by polyacrylamide gel electrophoresis because :

Accepted Answer

it binds to proteins and confers a uniform negative charge density thereby making them move during electrophoresis

Answer

it helps in solubilization of proteins making it easier to separate

Answer

decreases surface tension of the buffer used for electrophoresis

Answer

stabilizes the protein

Question 2

Cytochalasin D inhibits the formation of microfilaments. Which of the following biological activities will not be hindered ?

Accepted Answer

Cytosolic transport of vesicles

Answer

Muscle contraction

Answer

Amoeboid movement of phagocytic cells

Answer

Formation of cleavage furrow following telophase of mitosis

Question 3

Which of the following statements for ‘Genetic drift’ is FALSE ?

Accepted Answer

Genetic drift can lead to richness of genetic variation within populations

Answer

Genetic drift can cause allele frequencies to change at random

Answer

Genetic drift can cause harmful alleles to become fixed

Answer

Genetic drift affects allele frequencies stronger in small populations

Question 4

According to Oparin, which of the following was not present in the primitive atmosphere of the earth ?

Accepted Answer

oxygen

Answer

methane

Answer

hydrogen

Answer

water

Question 5

Life is said to have originated as coacervates that were formed by :

Accepted Answer

Polymerization and aggregation

Answer

DNA

Answer

Radiations

Answer

Heat