TLS Online TPP Program

#Question id: 598


Which might be a method used for distinguishing among several mechanistic possibilities in a multi-substrate reaction?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Measure Km in the presence of one substrate at a time.

  2. Measure the rate with respect to one substrate while varying the concentration of another substrate.

  3. Measure the rate while adding inactivators for all but one substrate.

  4. Any of the above

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TLS Online TPP Program

#Question id: 19076

#Unit 6. System Physiology – Plant

Pathogen Pseudomonas  produces toxins which causes avirulence, known as

TLS Online TPP Program

#Question id: 19077

#Unit 6. System Physiology – Plant

Race between effector and ETI evolution between plants and pathogens is an example of___

TLS Online TPP Program

#Question id: 19078

#Unit 6. System Physiology – Plant

Avirulence (Avr) genes, they are recognized by a cognate resistance gene. The Pseudomonas AvrPto effector causes avirulence on tomato (Solanum lycopersicum) because they carry__

TLS Online TPP Program

#Question id: 19079

#Unit 6. System Physiology – Plant

Pathogen evades plant by penetration of surface layers directly using mechanical pressure or enzymatic attack, some pass through natural openings, such as stomata or lenticels, and others only enter through wounded tissue. Once inside the plant, one of three main attack strategies is deployed specific feature of interaction given;
A) Necrotrophy
B) Biotrophy
C) Hemibiotrophy
i) where the plant cells remain alive throughout infection
ii) where the plant cells are killed in advance of infection 
iii) extensive plant tissue damage at initial stages
iv) where the pathogen initially keeps cells alive but at later stages of the infection, kills them
Match the following

TLS Online TPP Program

#Question id: 19080

#Unit 6. System Physiology – Plant

Which type of pathogens produces cell wall‐degrading enzymes tend to attack a broad range of plant species?

TLS Online TPP Program

#Question id: 19081

#Unit 6. System Physiology – Plant

Oomycetes (fungus‐like organisms), brown algae and mammalian parasites as Plasmodium falciparum and fungi can be__
a) Biotrophic plant pathogens
b) Necrotrophic plant pathogens
c) Hemibiotrophic plant pathogens