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TLS Online TPP Program

#Question id: 11353

Prior to the availability of a measles vaccine, outbreaks of measles occurred at two-year intervals, why?

#Unit 10. Ecological Principles
  1. Measles outbreaks occurred during hard winters, which happen every other year
  2. Two years were required for accumulation of enough susceptible infants
  3. Immunity to measles wore off in about two years
  4. Two years were required for the measles virus to disperse from tropical sources
More Questions
TLS Online TPP Program

#Question id: 10723

#Unit 10. Ecological Principles

What does the graph tell you about the effect of a keystone species?
TLS Online TPP Program

#Question id: 6593

#General Aptitude

31

17

58

87

68

19

61

56

91

22

70

50

10

142

11

?

TLS Online TPP Program

#Question id: 10803

#Unit 6. System Physiology – Plant

Which of the following are not consider as nitrogen-containing secondary metabolites?
TLS Online TPP Program

#Question id: 14993

#Unit 4. Cell Communication and Cell Signaling

CD-56 marker found on ?
TLS Online TPP Program

#Question id: 18757

#Unit 13. Methods in Biology

which phage is used in oligonucleotide directed mutagenesis?