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TLS Online TPP Program

#Question id: 7306

A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter. Iris normally blooms as a long-day (short-night) plant. Which of the following has the best chance of creating iris blooms in winter?

#I Life Science/ Life Sciences Group – I-V
  1. Artificially increase the period of darkness in the greenhouse.
  2. Increase the temperature to more closely follow summer temperatures.
  3. Alternate four hours of darkness with four hours of light repeatedly over each 24-hour period.
  4. Interrupt the long winter nights with a brief period of light.
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TLS Online TPP Program

#Question id: 686

#SCPH01 Biochemistry

Which is not an example of an oligomeric protein?
TLS Online TPP Program

#Question id: 6991

#I Life Science/ Life Sciences Group – I-V

Metamorphosis of amphibians is triggered by environmental cues that act on the:
TLS Online TPP Program

#Question id: 10775

#SCPH05 I Biotechnology

Geranyl diphosphate is a precursor of which plant hormone biosynthesis?
TLS Online TPP Program

#Question id: 4308

#SCPH06 I Botany

Most repressor proteins are allosteric. Which of the following molecules binds with the repressor to alter its conformation and therefore affect its function?
TLS Online TPP Program

#Question id: 5049

#SCPH01 Biochemistry

The fundamental notion of a stem cell is that it can make more stem cells while also producing cells committed to undergoing differentiation. This process is called as-