Quiz 23-December-2023

#1. Transport of water across aquaporins is regulated by the presence of which of the following sequence of three highly conserved amino acids?

Pro-Ala-Asn

Ala-Asn-Pro

Pro-Asn-Ala

Asn-Pro-Ala

#2. Small RNAs with internally complementary sequences that form hairpin-like structure, synthesized as precursor RNAs and cleaved by endonucleases to form short duplexes are called

miRNA

tRNA

mRNA

snRNA

#3. The free energy ∆G of a dissolved solute

decreases with solute concentration

depends only on temperature

is independent of solute concentration

increases with solute concentration

#4. Standing on a polished stone floor one feels colder than on a rough floor of the same stone. This is because

there is greater heat loss from the soles of the feet when in contact with the polished floor than with the rough floor.

thermal conductivity of the stone depends on the surface smoothness.

the temperature of the polished floor is lower than that of the rough floor.

specific heat of the stone changes by polishing it.

#5. Which of the cyclins have/has essential functions in S-phase of cell cycle?

Both B- and D-type

B-type

A-type

D-type

#6. Polar bears maintain their body temperature because they have more of

F0F1 ATPase

myoglobin protein

uncoupling protein

transducing protein

#7. A protein in 100 mM KCl solution was heated and the observed T_m (midpoint of unfolding) was 60°C. When the same protein solution in 500 mM KCl was heated, the observed T_m was 65°C. What is the most probable reason for this increase in T_m?

Hydrophobic interaction is decreased and electrostatic repulsion is increased.

Van der Waals interaction is increased

Hydrophobic interaction is increased and electrostatic repulsion is decreased.

Hydrogen-bonding is increased

#8. The area of allowed regions in the Ramachandran map will be least for

L-Pro

α-methyl L-valine

L-Ala

Gly

#9. Na⁺ - K⁺ ATPase is a tetramer of 2α and 2β subunits. On which of the following subunits are the Na⁺ and K⁺ binding sites present?

Na⁺ on α and K⁺ on β

Na⁺ on β and K⁺ on α

Both on α

Both on β

#10. The acidity of normal rainwater is due to

SO₂

CO₂

NO₂

Finish

Results

Rate this post

Congratulations ! You passed.

Rate this post

You did not pass.

You can retry now.

Quiz 23-December-2023

#1. Transport of water across aquaporins is regulated by the presence of which of the following sequence of three highly conserved amino acids?

#2. Small RNAs with internally complementary sequences that form hairpin-like structure, synthesized as precursor RNAs and cleaved by endonucleases to form short duplexes are called

#3. The free energy ∆G of a dissolved solute

#4. Standing on a polished stone floor one feels colder than on a rough floor of the same stone. This is because

#5. Which of the cyclins have/has essential functions in S-phase of cell cycle?

#6. Polar bears maintain their body temperature because they have more of

#7. A protein in 100 mM KCl solution was heated and the observed T_m (midpoint of unfolding) was 60°C. When the same protein solution in 500 mM KCl was heated, the observed T_m was 65°C. What is the most probable reason for this increase in T_m?

#8. The area of allowed regions in the Ramachandran map will be least for

#9. Na⁺ - K⁺ ATPase is a tetramer of 2α and 2β subunits. On which of the following subunits are the Na⁺ and K⁺ binding sites present?

#10. The acidity of normal rainwater is due to

Results

Quick links

Choose Your topic

Quiz 23-December-2023

#1. Transport of water across aquaporins is regulated by the presence of which of the following sequence of three highly conserved amino acids?

#2. Small RNAs with internally complementary sequences that form hairpin-like structure, synthesized as precursor RNAs and cleaved by endonucleases to form short duplexes are called

#3. The free energy ∆G of a dissolved solute

#4. Standing on a polished stone floor one feels colder than on a rough floor of the same stone. This is because

#5. Which of the cyclins have/has essential functions in S-phase of cell cycle?

#6. Polar bears maintain their body temperature because they have more of

#7. A protein in 100 mM KCl solution was heated and the observed Tm (midpoint of unfolding) was 60°C. When the same protein solution in 500 mM KCl was heated, the observed Tm was 65°C. What is the most probable reason for this increase in Tm?

#8. The area of allowed regions in the Ramachandran map will be least for

#9. Na+ - K+ ATPase is a tetramer of 2α and 2β subunits. On which of the following subunits are the Na+ and K+ binding sites present?

#10. The acidity of normal rainwater is due to

Results

Quick links

Choose Your topic

#7. A protein in 100 mM KCl solution was heated and the observed T_m (midpoint of unfolding) was 60°C. When the same protein solution in 500 mM KCl was heated, the observed T_m was 65°C. What is the most probable reason for this increase in T_m?

#9. Na⁺ - K⁺ ATPase is a tetramer of 2α and 2β subunits. On which of the following subunits are the Na⁺ and K⁺ binding sites present?