TLS Online TPP Program

#Question id: 378


Which of the following statements about buffers is true?

#1. Molecules and their Interaction Relevant to Biology
  1. A buffer composed of a weak acid of pKa = 5 is stronger at pH 4 than at pH 6.

  2. At pH values higher than the pKa, the salt concentration is higher than that of the acid.

  3. The strongest buffers are those composed of strong acids and strong bases.

  4. When pH = pKa, the weak acid and salt concentrations in a buffer are equal.

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TLS Online TPP Program

#Question id: 10504

#6. System Physiology – Plant

Under which conditions, the Pseudomonas aeruginosa synthesize and release of siderophores

TLS Online TPP Program

#Question id: 10505

#6. System Physiology – Plant

Pseudomonas aeruginosa can alleviate the symptoms of abiotic stress by releasing of antibiotics, the amounts of the compounds released by P. aeruginosa are controlled by

TLS Online TPP Program

#Question id: 10505

#6. System Physiology – Plant

Pseudomonas aeruginosa can alleviate the symptoms of abiotic stress by releasing of antibiotics, the amounts of the compounds released by P. aeruginosa are controlled by

TLS Online TPP Program

#Question id: 10506

#6. System Physiology – Plant

Plant growth promoting rhizobacteria (PGPRs) such as Pseudomonas aeruginosa, that alleviate plant abiotic or biotic stress in soil by releasing of

TLS Online TPP Program

#Question id: 10507

#6. System Physiology – Plant

Rhizobacteria function as

 a) Nitrogen fixation

 b) depositing pathogens directly into the vascular system,

 c) producing antibiotics and antifungal agents for inhibiting soil pathogens

 d) herbivore sensors by sending electrical or chemical signals to surrounding cells

 Which one of the following combination is correct?

TLS Online TPP Program

#Question id: 10508

#6. System Physiology – Plant

Glandular trichomes store species-specific secondary metabolites in a pocket formed between the cell wall and the cuticle. These secondary metabolites are-