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TLS Online TPP Program

#Question id: 11477

How could you genetically modify an animal so that it would distinguish more shades of green?

#Unit 7. System Physiology – Animal
  1. Induce genes to produce a greater number of cone cells in the fovea.
  2. Introduce genes for different opsins that respond in the green region of the spectrum.

  3. Introduce genes to produce green fluid in the eyeball, because green fluids will not absorb green light.

  4. Induce increased production of cGMP to increase opening of cGMP-gated sodium channels.
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TLS Online TPP Program

#Question id: 16122

#Unit 7. System Physiology – Animal

Fever is an abnormal elevation of body temperature. Following statements are regarding to the cellular mechanism of fever.
A. Pyrogens produce fever by increasing the hypothalamic set-point temperature.
B. the mechanism of pyrogen action is increased production of interleukin-1 (IL-1) in phagocytic cells.
C. IL-1 then acts on the anterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.
D. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.
E. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which decrease the set-point temperature.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 6946

#Unit 5. Developmental Biology

The adult body plan of the fly is based on reiterating structures called segments; segment precursors (parasegments) are first positioned at the cell-by-cell level by which group of genes?
TLS Online TPP Program

#Question id: 1055

#Unit 4. Cell Communication and Cell Signaling

What part of the E. coli T4 phage attaches to the host cell receptors?
TLS Online TPP Program

#Question id: 3454

#Unit 11. Evolution and Behavior

Altruism is favoured when rb - c > 0 where c is fitness cost to altruist, b is fitness benefit to recipient; and r is genetic relatedness. It is under negative selection when
TLS Online TPP Program

#Question id: 10506

#Unit 6. System Physiology – Plant

Plant growth promoting rhizobacteria (PGPRs) such as Pseudomonas aeruginosa, that alleviate plant abiotic or biotic stress in soil by releasing of