Practice Questions

TLS Online TPP Program

#Question id: 334

Which of the following statements about hydrogen bonding is not true?

#Unit 1. Molecules and their Interaction Relevant to Biology

In liquid water, the average water molecule forms hydrogen bonds with three to four other water molecules.
Hydrogen bonds account for the anomalously high boiling point of water.
Individual hydrogen bonds in liquid water exist for many seconds and sometimes for minutes.
The strength of a hydrogen bond depends on the linearity of the three atoms involved in the bond.

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TLS Online TPP Program

#Question id: 28768

#Unit 2. Cellular Organization

Given following paths from different sources feed substances into lysosomes for digestion, find out the A, B and C?

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

TLS Online TPP Program

#Question id: 28770

#Unit 2. Cellular Organization

Autophagy can be either;

I- Nonselective autophagy

II- Selective autophagy

a) Closure of the membrane cup to form autophagosome

b) a bulk portion of cytoplasm is sequestered in autophagosomes

c) used to destroy invading microbes

d) Nucleation of autophagosome formation by ATG1

Find out the correct match statements of about selective as well as nonselective autophagy?

TLS Online TPP Program

#Question id: 28771

#Unit 2. Cellular Organization

Which of the following sorting signal that directs lysosomal hydrolases from the TGN to the late endosome?

TLS Online TPP Program

#Question id: 28772

#Unit 2. Cellular Organization

M6P residues are generated in the cis-Golgi by which of the following Golgi-resident enzymes?

a) N-acetylglucosamine (GlcNAc) phosphotransferase

b) ornithine transcarbamylase

c) Phosphodiesterase

TLS Online TPP Program

#Question id: 28773

#Unit 2. Cellular Organization

Which of the following coat protein complex specialized for endosome-to-TGN transport, also responsible for recycling the M6P receptor to the TGN?