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TLS Online TPP Program

#Question id: 26938

Which of the following statements is the most appropriate to define character displacement?

#Unit 10. Ecological Principles
  1. Two related species depending on the same prey species avoid competition by feeding at different times of the day.
  2. The body sizes of two related species are very similar when they are allopatric but in geographical areas of sympatric, one species is significantly smaller than the other
  3. The food niche of a species is generally wider in the absence of competing species than in their presence.
  4.  Closely related species can coexist if their densities are regulated by a predator
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TLS Online TPP Program

#Question id: 31092

#Unit 4. Cell Communication and Cell Signaling

GPCR pathway mainly via a G protein called Gq, activates PLC-b. Mentioned below are some of the steps. Which of the following not correct?
TLS Online TPP Program

#Question id: 26941

#Unit 10. Ecological Principles

Which of the following population growth model represent the S-shaped growth curve?
TLS Online TPP Program

#Question id: 34087

#Unit 3. Fundamental Processes

A DNA containing which an origin of replication undergoing to initiation of replication and further, is digested with restriction endonuclease. Which shape of DNA segment can be found after digestion followed electrophoresis.
A. Y Shape B. Bubble shape C. bubble-to-Y-arc D. Circular
TLS Online TPP Program

#Question id: 3981

#Unit 3. Fundamental Processes

The diagram below represents a hypothetical operon in the bacterium E. coli.  The operon consists of two structural genes (A and B), which code for the enzymes A-ase and B-ase, respectively, and also includes P (promoter) and O (operator) regions as shown.

 When a certain compound (X) is added to the growth medium of E. coli, the separate enzymes A-ase and B-ase are both synthesized at a 50-fold higher rate than in the absence of X.  (X has a molecular weight of about 200.)  Which of the following statements is true of the operon decribed above?
TLS Online TPP Program

#Question id: 4577

#Unit 11. Evolution and Behavior

Which of these is a statement that Darwin would have rejected?