TLS Online TPP Program

#Question id: 815


The cis conformation shows Cα atoms are on the same side of the peptide bond, is ∼8 kJ mol−1 less stable than the trans conformation. Why?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. steric interference between ketone and amide group

  2. because of steric interference between neighboring side chains

  3. conformational entropy will be high in cis conformation

  4. because the peptide bond is less stable

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TLS Online TPP Program

#Question id: 10543

#Unit 6. System Physiology – Plant

Effectors are molecules that change the plant’s structure, metabolism, or hormonal regulation to the advantage of the pathogen, which of the following is effector molecules?

TLS Online TPP Program

#Question id: 10544

#Unit 6. System Physiology – Plant

Fusicoccin is a nonspecific toxin from the fungus Fusicoccum amygdali function as,

TLS Online TPP Program

#Question id: 10545

#Unit 6. System Physiology – Plant

Some given facts regarding effector molecules such as;

a) HC-toxin-induced plasma membrane hyperpolarization in guard cells causes massive K+ uptake and permanent stomatal opening

b) Xanthomonas, are proteins that target the plant cell nucleus and causes change in gene expression, called transcription activator-like (TAL) effectors bind to the host plant DNA and activate the expression of genes

c) Fusicoccin, a cyclic peptide, acts on the enzyme histone deacetylase in the nucleus, and may have a compromising effect on the expression of genes involved in defense

d) Gibberellins accelerate growth, resulting in bigger plants when compared with uninfested plants. The gibberellins produced by the fungi are identical to those produced endogenously by the plant

Which of the following combination is incorrect?

TLS Online TPP Program

#Question id: 10546

#Unit 6. System Physiology – Plant

Given below are certain statements regarding plant-pathogen interactions: which one of the following is incorrect?

TLS Online TPP Program

#Question id: 10547

#Unit 6. System Physiology – Plant

Which of the following responses are incorrect for closing of stomata?

TLS Online TPP Program

#Question id: 10548

#Unit 6. System Physiology – Plant

flg22-elicited response is dependent on the presence of the LRR receptor-like kinase, what will be the causes of mutant form of LRR receptor-like kinase FLS2?