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TLS Online TPP Program

#Question id: 10466

In Arabidopsis, phot1 mutants have a normal avoidance response and a poor accumulation response, phot2 mutants lack the avoidance response but retain a fairly normal accumulation response, while phot1/phot2 double mutant lack both the avoidance and accumulation responses. These results indicate that,

#Unit 6. System Physiology – Plant
  1. Phot1 plays a key role in the avoidance response, and that both phot1 and phot2 contribute to the accumulation response
  2. Phot2 plays a key role in the avoidance response, and that both phot1 and phot2 contribute to the accumulation response
  3. Phot2 plays a key role in the accumulation response, and that both phot1 and phot2 contribute to the accumulation response as well as in avoidance response 
  4. phot1 mutants in fact do not survive in the field under conditions of full sunlight due to photooxidative damage
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TLS Online TPP Program

#Question id: 15526

#Unit 4. Cell Communication and Cell Signaling

If a thymocyte randomly generated a TCR with an affinity for MHC Class I, the TCR and CD8 would bind MHC Class I together, and generate a signal that specifically initiated a program that is 
a) silenced CD8 expression
b) silenced CD4 expression
c) induced expression of genes specific for helper T-cell lineage function
d) induced expression of genes specific for cytotoxic T-cell lineage function
TLS Online TPP Program

#Question id: 5303

#Unit 11. Evolution and Behavior

Which of the following statements defines proteomics?
TLS Online TPP Program

#Question id: 11336

#Unit 10. Ecological Principles

Which of the following is NOT a prediction arising out of Wilson-MacArthur's -Theory of Island Biogeography?
TLS Online TPP Program

#Question id: 9164

#Unit 9. Diversity of Life Forms

Use the following figures to answer the question below.


East of the Mississippi River, in Hopkinsville Kentucky, the mean annual precipitation is 130 cm. The mean annual temperature is 14.3°C. In the winter, the mean temperature is 7.3°C, while in summer it is 20.6°C. Using the climograph shown here, how would we classify the biome found in Hopkinsville?
TLS Online TPP Program

#Question id: 3020

#Unit 2. Cellular Organization

During which phase of the bacterial growth curve does the total number of viable cells decline?