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TLS Online TPP Program

#Question id: 878

Can a peptide bind more strongly to an unfolded than the same protein in a folded state?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. It will depend on the balance of favourable interactions (enthalpy) versus loss in conformational entropy. For the folded protein, the loss in conformational entropy is less upon binding.

  2. If the increased interactions for the unfolded protein can less than compensate the increased loss in conformational entropy then the net Gibbs free energy will be favourable.

  3. The unfolding do not cause the the appearance of hydrophobic sites of the surface of protein, so if the interaction of the peptide with the protein is depending on the hydrophobic site.

  4. If the binding site changed due to unfolding the binding will be stronger.

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TLS Online TPP Program

#Question id: 28093

#Unit 6. System Physiology – Plant

Different component are oriented in different manner     
(a) Photosystem II is located predominantly in the stacked regions of the thylakoid membrane
(b) Photosystem I is located predominantly in the stacked regions of the thylakoid membrane
(c) photosystem II and ATP synthase are found in the unstacked regions protruding into the stroma 
(d) photosystem I and ATP synthase are found in the unstacked regions protruding into the stroma
Which of the following is correct
TLS Online TPP Program

#Question id: 28094

#Unit 6. System Physiology – Plant

Which of the following involved in the phosphorylation of LHCII complex when the pool of plastoquinone is in a highly reduced state 
TLS Online TPP Program

#Question id: 28095

#Unit 6. System Physiology – Plant

Which of the following proteins are directly involved in various nonphotochemical quenching (NPQ)    
(a) PSBS
(b) PSBA
(c) PSBB
(d) violaxanthin de‐epoxidase
Which of the following is correct 
TLS Online TPP Program

#Question id: 28096

#Unit 6. System Physiology – Plant

Buildup of a acidic thylakoid ΔpH in the presence of excess light resulting the thylakoid lumen activates an enzyme that converts violaxanthin into zeaxanthin which is 
TLS Online TPP Program

#Question id: 28097

#Unit 6. System Physiology – Plant

Asada-Halliwell pathway protects plants against oxidative stress during unfavorable environmental growth regimes 
a. Also known as The ascorbate-glutathione pathway 
b. Involved only enzymatic reaction 
c. Involved both enzymatic as well as non enzymatic reation 
d. Is an indispensable component of the ROS homeostasis mechanism of plants
Which of the following is correct
TLS Online TPP Program

#Question id: 28098

#Unit 6. System Physiology – Plant

The biosynthesis of chlorophylls and heme begins with the synthesis of