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TLS Online TPP Program

#Question id: 12538

Some global warming models predict that, if permafrost in the tundra regions in the northern hemisphere melts, atmospheric CO2  levels will increase. Which of the following statements best explains this prediction?

#Unit 10. Ecological Principles
  1. The heat released by  the melting  of  the ice  on  such a  vast scale will  cause atmospheric CO2  saturation levels to increase.
  2. All of the tundra producers will die if the permafrost melts, and because the tundra regions are vast in the northern hemisphere the tundra plants will not take part in photosynthetic removal of atmospheric CO2
  3. CO2 tied up in the permafrost ice will be released during a thaw.
  4. All  of  the  undecayed organic material would  be  subject to  decomposition following  a  thaw, which  would lead to incredible increase in global cellular respiration, and add to atmospheric CO2
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TLS Online TPP Program

#Question id: 26860

#Unit 10. Ecological Principles

Trophic-level transfer efficiency is low for which reason?
TLS Online TPP Program

#Question id: 11551

#Unit 7. System Physiology – Animal

Polypeptides can have which of the following types of effects?

I) autocrine

II) paracrine

III) endocrine
TLS Online TPP Program

#Question id: 7518

#General Aptitude

In a flight of 800 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/h and the time of flight increased by 20 min. The duration of the flight is
TLS Online TPP Program

#Question id: 23031

#Unit 12. Applied Biology

Which of the following portion of some xenobiotic can be traced back to a biological origin to see if these substances were produced oil, natural gas or coal?
TLS Online TPP Program

#Question id: 420

#Unit 1. Molecules and their Interaction Relevant to Biology

The structure of NAD+ does not include: