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TLS Online TPP Program

#Question id: 2659

The correct option regarding the lac operon in E.coli from the following is

#Unit 2. Cellular Organization

  1. Lac operon is switched on in the absence of lactose

  2. Lac repressor binds to the lac promoter

  3. β-galactosidase is the only enzyme produced in large quantities when lac operon is turned on

  4. lac operon messenger RNA is a polycistronic mRNA

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TLS Online TPP Program

#Question id: 569

#Unit 1. Molecules and their Interaction Relevant to Biology

A small molecule that decreases the activity of an enzyme by binding to a site other than the catalytic site is termed a(n):
TLS Online TPP Program

#Question id: 12969

#Unit 10. Ecological Principles

In which of the following habitats would one expect to find the highest diversity of vascular plants? 
TLS Online TPP Program

#Question id: 16788

#Unit 13. Methods in Biology

If he arithmetic mean between a " 1 and b, then n is equal to 
TLS Online TPP Program

#Question id: 1562

#Unit 4. Cell Communication and Cell Signaling

________ are cells of the mammalian innate immune response that help destroy tumors.
TLS Online TPP Program

#Question id: 18599

#Unit 13. Methods in Biology

Three guys A, B, and C gets involved in a cycle race. All the guys are competent at the same level. If they race once a day for a week, what is the probability of A winning the race thrice?