Practice Questions

TLS Online TPP Program

#Question id: 10420

A toggle model has been proposed for phytochrome interconversion, according to this model which option is correct?

#Unit 6. System Physiology – Plant

D-ring of the chromophore in the Pr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light
the structure of the α helix region of Pr is changed to an β-hairpin during the conversion of Pr to Pfr
C-ring of the chromophore in the Pfr form exist in the β-hairpin form changes conformation to an α-helix by inducing red-light and conversion of pr to pfr takes place
By absorbing red light conversion of Pr to Pfr, β1-region of the chromophore changes conformation to an α-helix

More Questions

TLS Online TPP Program

#Question id: 18868

#Unit 13. Methods in Biology

Prior to staining, which of the following is employed as a fixative in light microscopy?

TLS Online TPP Program

#Question id: 20286

#Unit 7. System Physiology – Animal

Except for that portion of the insulin that combines with receptors in the target cells, the remainder is degraded by the enzyme _____?

TLS Online TPP Program

#Question id: 12938

#Unit 13. Methods in Biology

What is the main advantage of using Yeast Artificial Chromosome based vector over other vectors?

1. It has ability to clone very large fragments of DNA.

2. YAC vectors do not contain origin of replication sites

3. It has insert range up to 2000 kb.

4. It help in genome mapping and sequencing projects.

TLS Online TPP Program

#Question id: 33503

#Unit 2. Cellular Organization

Match the following

TLS Online TPP Program

#Question id: 28769

#Unit 2. Cellular Organization

Autophagy occurs in the following sequence of steps___

a) Nucleation of autophagosome formation by ATG9

b) Digestion of the inner membrane and the luminal contents of the autophagosome.

c) Fusion of the autophagosome with lysosomes, catalyzed by SNAREs.

d) Induction by inhibition of mTOR complex 1

e) Closure of the membrane cup to form autophagosome