TLS Online TPP Program

#Question id: 31031


Which of the following sequence is correct regarding GPCR signalling pathway?

#Unit 4. Cell Communication and Cell Signaling
  1. Epinephrine → cAMP →Adenylyl cyclase→ Gαs-GTP → PKA
  2. Epinephrine →Gαs-GTP → PKA → cAMP→ Adenylyl cyclase
  3. Epinephrine →Gαs-GTP →Adenylyl cyclase→ cAMP→ PKA
  4. Epinephrine →Gαs-GTP →Adenylyl cyclase→ PKA → cAMP
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TLS Online TPP Program

#Question id: 1539

#Unit 4. Cell Communication and Cell Signaling

Regulatory T cell (TREG) have identified by the presence of

TLS Online TPP Program

#Question id: 10755

#Unit 10. Ecological Principles

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?

TLS Online TPP Program

#Question id: 28652

#Unit 2. Cellular Organization

Which of the ubiquitinylated ligase protein complexes recognized the N-terminus of a geminin protein destruction box that leads to degradation by proteosome in late anaphase? 

TLS Online TPP Program

#Question id: 29049

#Unit 10. Ecological Principles

Some given statements about anti freezing are given;
a. some invertebrates to withstand temperatures as low as –18°C without freezing, in presence of glycoproteins
b. Sodium, potassium, or chloride ions involve to increasing  the blood freezing point, so the lack of these ions some species help to lower the blood freezing point
c. Amphibians release large amount of glucose into the blood to prevent freezing of blood in cold
d. Sodium, potassium or urea function as anti freezing in their blood
e. Glycine causes supercooling in plants
Which of the following statements about supercooling/anti freezing is correct?

TLS Online TPP Program

#Question id: 9614

#Unit 9. Diversity of Life Forms

Some molecular data place the giant panda in the bear family (Ursidae) but place the lesser panda in the raccoon family (Procyonidae). Consequently, the morphological similarities of these two species are probably due to