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TLS Online TPP Program

#Question id: 650

On the basis of hypothetical binding curve given below, which of the following statement is INCORRECT

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Ɵ Theta represents the fraction of binding sites occupied by ligand, the concentration of ligand at which half the binding sites are occupied

  2. A hypothetical binding curve for a ligand L. The [L] at which half of the available ligand binding sites are occupied is equivalent to 1/Ka, or Kd.

  3. The curve has a horizontal asymptote at Ɵ Theta = 1 and a vertical asymptote at [L] = -1/Kd.

  4. Ɵ Theta is analogous to Vmax for Michaelis- Menton enzymes.

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TLS Online TPP Program

#Question id: 19313

#Unit 4. Cell Communication and Cell Signaling

Match the following effector molecules with their pathogen
     

    

        Pathogen

     

    Effector molecules

 

        Function

 

A) Fusicoccum amygdali

 

i) HC‐toxin

 

a) inhibits salicylic acid (SA)‐mediated defense responses

 

 

B) Cochliobolus carbonum

 

ii) Coronatine

 

b) Constitutively activates the plasma membrane H+‐ATPase

 

 

C) Pseudomonas syringae

 

iii) Fusicoccin

 

c) Inhibits histone deacetylase activity

 

 

 

 

d) Opening of stomata

 

TLS Online TPP Program

#Question id: 27137

#Unit 7. System Physiology – Animal

A young woman has puffy skin and a hoarse voice. Her plasma TSH concentration is low but increases markedly when she is given TRH. She probably has
TLS Online TPP Program

#Question id: 172

#Unit 1. Molecules and their Interaction Relevant to Biology

Which amino acid is least likely to participate in acid-base catalysis?
TLS Online TPP Program

#Question id: 10814

#Unit 10. Ecological Principles

A Population of N1 species is growing with N2 species with a growth rate (r1) of 0.15 in an environment with a carrying capacity K1 of 400, Density of N1 species 100, density of N2 species 50 competitive efficiency of N2 on N1 species 1.5. What is the approximate growth rate N1 species?
TLS Online TPP Program

#Question id: 18845

#Unit 13. Methods in Biology

The action of EDTA in EDTA-lysozyme treatment in bacterial DNA extraction is