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TLS Online TPP Program

#Question id: 2628

Choose true statement about lac repressor;

#SCPH28 | Zoology

  1. Lac repressor binds as a dimer.

  2. located 400 bp downstream and 90 bp upstream of the primary operator.

  3. Each operator is contacted by only one of these subunits.

  4. The different oligomeric form alters the mechanism of DNA recognition.

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TLS Online TPP Program

#Question id: 5121

#SCPH01 Biochemistry

Following statements are being made regarding ‘stem cells. Which statement is incorrect?
TLS Online TPP Program

#Question id: 19381

#SCPH01 Biochemistry

Glyphosate resistance in plants can be generated by expressing in them transgenes that serve one of the following three purposes: 
(1) Overproduction of EPSPS enzyme 
(2) Encode an EPSPS enzyme that is tolerant to glyphosate
(3) Produce an enzyme that inactivates glyphosate
(4) Use a combination of the strategies (2) and (3)
Which of the above strategies can be used to make plants glyphosate resistant?
TLS Online TPP Program

#Question id: 14829

#SCPH06 I Botany

A new drug is developed that inhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?
TLS Online TPP Program

#Question id: 3290

#SCPH06 I Botany

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?
TLS Online TPP Program

#Question id: 16104

#SCPH28 | Zoology

The most potent mechanism for increasing heat production is