TLS Online TPP Program

#Question id: 11198


The "undershoot" phase of hyperpolarization is due to ________.

#Unit 7. System Physiology – Animal
  1. slow opening of voltage-gated sodium channels
  2. sustained opening of voltage-gated potassium channels
  3. rapid opening of voltage-gated calcium channels
  4. slow restorative actions of the sodium-potassium ATPase
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TLS Online TPP Program

#Question id: 2876

#Unit 2. Cellular Organization

From the following set of statements regarding DNA topology, state whether each of the given statement is either True or False.

A.      The two strands of cccDNA can be easily separated without any breakage of bonds.

B.      Circular DNA molecules purified from bacteria and eukaryotes are usually negatively supercoiled.

C.      Interwound writhe and spiral writhe are topologically different.

D.      The organisms that live under extreme temperature conditions have been found to have positively supercoiled DNA.

E.      Negative supercoils can be thought of as a store of free energy that aids in processes that require strand separation.

TLS Online TPP Program

#Question id: 5224

#Unit 11. Evolution and Behavior

What does the field often called ʺevo-devoʺ study?

TLS Online TPP Program

#Question id: 28244

#Unit 5. Developmental Biology

In male Drosophila, which of the following cell is undergo a committed progenitor cell that divides to become the precursors of the sperm?

TLS Online TPP Program

#Question id: 24518

#Unit 10. Ecological Principles

Some nonnative parasites are introduced deliberately for the biological control of pests, which of the following are necessary attributes of a good agent of biological control?
a. low rate of increase relative to the host’s
b. Good dispersal ability
c. High searching capacity for hosts
d. Minimal time lag effects
e. Maximal time lag effect
f. General adaptability to the environment

TLS Online TPP Program

#Question id: 15414

#Unit 5. Developmental Biology

Which of the following transcription factor activated by BMP4 & FGF8 respectively?