Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 2851
TLS Online TPP Program

#Question id: 2876

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.

#Unit 2. Cellular Organization

  1.   A – F, B – T, C – T, D – F, E – F

  2.  A – F, B – T, C – F, D – T, E – T

  3.  A – T, B – F, C – F, D – T, E – T

  4. A – F, B – F, C – T, D – T, E – F

More Questions
TLS Online TPP Program

#Question id: 18579

#Unit 7. System Physiology – Animal

When the body is in a state of physiological equilibrium, it is said to be in a state of ______.
TLS Online TPP Program

#Question id: 32230

#Unit 2. Cellular Organization

A preparation of nerve terminals, which undergo extensive endocytosis, was lysed by treatment with distilled water and incubated with GTP-γ-S, a nonhydrolyzable derivative of GTP. What would be the outcome?
TLS Online TPP Program

#Question id: 11290

#Unit 10. Ecological Principles

Which of the following statement are incorrect?
TLS Online TPP Program

#Question id: 20301

#Unit 7. System Physiology – Animal

Which adrenal medullary enzyme converts Norepinephrine to Epinephrine: 
TLS Online TPP Program

#Question id: 5669

#Unit 5. Developmental Biology

What is the reproductive difference between sea urchins and mammals is?