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TLS Online TPP Program

#Question id: 10365

Why the nitrogenase enzymes catalyzes the nitrogen fixation reaction only in microanaerobic or anaerobic conditions?

#Unit 6. System Physiology – Plant
  1. O2 form ROS (reactive oxygen species) that inhibits the enzyme nitrogenase
  2. Oxygen, being a strong electron acceptor, can damage these sites and irreversibly inactivate nitrogenase, so nitrogen must be fixed under anaerobic conditions
  3. Because lack a PSI, the oxygen-producing photosystem of chloroplasts, so they do not generate oxygen
  4. nitrogenase enzymes only active in anaerobic environment and inhibit in the aerobic environment due to O2
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TLS Online TPP Program

#Question id: 4730

#Unit 8. Inheritance Biology

Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?
TLS Online TPP Program

#Question id: 4334

#Unit 3. Fundamental Processes

Which of the following is not true of RNA processing?
TLS Online TPP Program

#Question id: 31185

#Unit 4. Cell Communication and Cell Signaling

The homolog of vertebrate LRP in drosophila, known as:
TLS Online TPP Program

#Question id: 12986

#Unit 10. Ecological Principles

Infant mortality and life expectancy at birth in developed and developing countries. 


What is a logical conclusion that can be drawn from the graphs above?
TLS Online TPP Program

#Question id: 4159

#Unit 3. Fundamental Processes

Which statement is not true about the ʺwobbleʺ position?