Practice Questions

TLS Online TPP Program

#Question id: 12003

The graph below shows the growth rates of populations of bacteria that have evolved for many generations at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.
If all three populations were mixed together and placed at 37°C, which of the following would be most likely to happen?

#Unit 10. Ecological Principles

Only the population evolved at 25°C would die and become extinct.
Only the population evolved at 35°C would survive and reproduce.
All the bacteria would die and the populations would become extinct.
All populations would grow, and transfer of genes would create one common population.

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TLS Online TPP Program

#Question id: 29418

#Unit 6. System Physiology – Plant

Phases of the Calvin cycle and their catalyzing enzymes and class is given

(a) Carboxylation is catalyzed by rubisco

(b) Carboxylation is catalyzed by PGK and GAPDH

(c) Reduction of 3-phosphoglycerate is catalyzed by PGK and GAPDH

(d) Regeneration is catalyzed by isomerase, aldolases, and epimerases

Choose which of the following is INCORRECT

TLS Online TPP Program

#Question id: 29419

#Unit 6. System Physiology – Plant

The fixation of three molecules of CO2 into one molecule of triose phosphate requires

TLS Online TPP Program

#Question id: 29420

#Unit 6. System Physiology – Plant

Prior to CO2 fixation, Activation of RUBISCO takes place that involves

(a) Two protons are released

(b) Binding of CO2 molecule on NH2 group of lysine

(c) Binding of Zn molecule on NH2 group of Alanine

(d) Binding of Mg2+ concentration upon illumination

Which of the following processes are involves in activation of RUBISCO

TLS Online TPP Program

#Question id: 29421

#Unit 6. System Physiology – Plant

Large subunit of rubisco is encoded in_

TLS Online TPP Program

#Question id: 29422

#Unit 6. System Physiology – Plant

CO₂ can function as in the reaction catalyzed by rubisco

a) photo quencher

(b) an activator

(c) a substrate

(d) Divertor

Which of the following is true

TLS Online TPP Program

#Question id: 29423

#Unit 6. System Physiology – Plant

Different form of rubisco and their Quartenary structure is given

Match them correctly