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TLS Online TPP Program

#Question id: 10574

Which of the following statements about the evolution of life histories is correct?

#SCPH28 | Zoology
  1. Stable environments with limited resources favor r-selected populations.
  2. K-selected populations are most often found in environments where density-independent factors are important regulators of population size.
  3. Most populations have both r- and K-selected characteristics that vary under different environmental conditions.
  4. The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities
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TLS Online TPP Program

#Question id: 2122

#SCPH06 I Botany

The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight.  How many molecules of membrane lipid are there for each molecule of protein?  (Assume that the average protein is Mr 50,000 and the average lipid is 750.)
TLS Online TPP Program

#Question id: 15589

#SCPH05 I Biotechnology

Reynold’s number is ratio of:
TLS Online TPP Program

#Question id: 11985

#SCPH28 | Zoology

In  the  territorial  behavior  of  the  stickleback  fish,  the  red  belly  of  one  male  elicits  attack  from  another  male  by functioning as
TLS Online TPP Program

#Question id: 10562

#SCPH05 I Biotechnology

The direction and rate of water flow across a membrane are determined by
TLS Online TPP Program

#Question id: 4930

#SCPH28 | Zoology

Which of the following is the correct sequence of events in the origin of life?

I. Formation of protocells

II. Synthesis of organic monomers

III. Synthesis of organic polymers

IV. Formation of DNA-based genetic systems