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TLS Online TPP Program

#Question id: 35519

Which of the following statements are true regarding photoperiodism in plants?

#XL - R Botany
  1. Short-day plants flower when the night length is longer than a critical duration
  2. Long-day plants flower when the photoperiod exceeds a critical duration
  3. Day-neutral plants require uninterrupted light periods to flower
  4. Phytochrome is involved in sensing photoperiod changes in plants
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TLS Online TPP Program

#Question id: 3775

#XL - Q Biochemistry

What are telomeres?
TLS Online TPP Program

#Question id: 3777

#XL - Q Biochemistry

Which of the following types of cells are affected most by telomere shortening?
TLS Online TPP Program

#Question id: 3778

#XL - Q Biochemistry

Which of the following effects might be caused by reduced or very little active telomerase activity?
TLS Online TPP Program

#Question id: 3779

#XL - Q Biochemistry

In a healthy eukaryotic cell, the rate of DNA repair is typically equal to the rate of DNA mutation. When the rate of repair lags behind the rate of mutation, what is a possible fate of the cell?
TLS Online TPP Program

#Question id: 3780

#XL - Q Biochemistry

If a cell were unable to produce histone proteins, which of the following results would be a likely effect on the cell?
TLS Online TPP Program

#Question id: 3781

#XL - Q Biochemistry

Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus?