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TLS Online TPP Program

#Question id: 5006

The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?

#Unit 11. Evolution and Behavior

  1. the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules

  2. the persistence of some animal groups in anaerobic habitats

  3. the evolution of photosynthetic pigments that protected early algae from the corrosive effects of oxygen

  4. the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria

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TLS Online TPP Program

#Question id: 19046

#Unit 13. Methods in Biology

Which of the following techniques is used to study the three-dimensional structure of a molecule?
TLS Online TPP Program

#Question id: 19047

#Unit 13. Methods in Biology

Paper Chromatography is a physical method that is used to separate__________
TLS Online TPP Program

#Question id: 19048

#Unit 13. Methods in Biology

HPLC, the analytical performance improves when 
TLS Online TPP Program

#Question id: 19049

#Unit 13. Methods in Biology

What is the nature of mobile phase in reverse phase chromatography? 
TLS Online TPP Program

#Question id: 19050

#Unit 13. Methods in Biology

The relative adsorption of each component of the mixture is expressed in terms of its
TLS Online TPP Program

#Question id: 19051

#Unit 13. Methods in Biology

Select the correct statement regarding paper chromatography from the following.