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TLS Online TPP Program

#Question id: 8845

The experimental approach taken in current biological investigations presumes that

#Unit 9. Diversity of Life Forms
  1. simple organic compounds can be synthesized in the laboratory from inorganic precursors, but complex organic compounds like carbohydrates and proteins can only be synthesized by living organisms.
  2. living organisms can be understood in terms of the same physical and chemical laws that can be used to explain all natural phenomena.
  3. although a life force, or vitalism, exists in living organisms, this life force cannot be studied by physical or chemical methods.
  4. living organisms are composed of the same elements present in nonliving things, plus a few special trace elements found only in living organisms or their products. 
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TLS Online TPP Program

#Question id: 12574

#Unit 10. Ecological Principles

According to the small- population approach, what would be the best strategy for saving a population that is in an extinction vortex?
TLS Online TPP Program

#Question id: 12575

#Unit 10. Ecological Principles

All of the following are adaptations that permit the camel to be active by day in the desert EXCEPT 
TLS Online TPP Program

#Question id: 12576

#Unit 10. Ecological Principles

Estimates of current rates of extinction
TLS Online TPP Program

#Question id: 12577

#Unit 10. Ecological Principles

During  a  field  trip,  an  instructor  touched  a  moth  resting  on  a  tree  trunk.  The  moth  raised  its  forewings  to  reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory  receptors  had  fired  and  triggered  a  neuronal  reflex  culminating  in  the  contraction  of  certain  muscles.  A second student responded that the behaviour might frighten predators. Which statement best describes these explanations?
TLS Online TPP Program

#Question id: 12579

#Unit 10. Ecological Principles

Which of the following probably contains the highest concentration of toxic pollutants (biological magnification)? 
TLS Online TPP Program

#Question id: 12580

#Unit 10. Ecological Principles

When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because