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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: 18781

#Unit 13. Methods in Biology

In which of the following case a large lattice is formed?
TLS Online TPP Program

#Question id: 11267

#Unit 10. Ecological Principles

Two boottle containing phyoplankton in growing stage with oxygen level  20 mg/ml, in which one bottle placed in dark but another bottle placed in light , allowed to measurment of oxygen level is  15 mg/ml in dark bottle, 30 mg/ml in light bottle. Which of the following measure GPP is
TLS Online TPP Program

#Question id: 6590

#General Aptitude

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4

9

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2

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6

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TLS Online TPP Program

#Question id: 10969

#Unit 7. System Physiology – Animal

Which of the following will result in a transfusion reaction? Assume that the patient has never had a transfusion.
TLS Online TPP Program

#Question id: 28583

#Unit 2. Cellular Organization

Some given R factor which are responsible for beginning of the cell cycle in mammalian cells?