TLS Online TPP Program

#Question id: 2675


Which of the following statements regarding the trp operon is true?

#SCPH06 I Botany
  1. The operator region produces the mRNA that codes for the repressor.

  2. Repressor proteins are inactivated by the presence of the repressor.

  3. The regulatory gene is not transcribed in the presence of the repressor.

  4. The trp operon is always activated unless deactivated by a repressor.

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TLS Online TPP Program

#Question id: 10717

#SCPH06 I Botany

Following represents four different regions, each with four different sites on different-sized mountains. Which of the following statement is correct? 


a) In region ‘a’ gamma diversity (γ) is one, and alpha diversity (α) diversity is also 1

b) In region ‘b’ gamma diversity (γ) is 4, and alpha diversity (α) diversity is 1

c) In region ‘c’ gamma diversity (γ) is six, and beta diversity (β) diversity is 2

d) The gamma diversity (γ) are same in region ‘c’ and‘d’.

TLS Online TPP Program

#Question id: 2060

#I Life Science/ Life Sciences Group – I-V

An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?

TLS Online TPP Program

#Question id: 19606

#SCPH05 I Biotechnology

In the resonating structures of benzene, the number of sigma and pi bonds are

TLS Online TPP Program

#Question id: 8292

#I Life Science/ Life Sciences Group – I-V

Some molecular data place the giant panda in the bear family (Ursidae) but place the lesser panda in the raccoon family (Procyonidae). If the molecular data best reflect the evolutionary history of these two groups, then the morphological similarities of these two species is most likely due to ________.

TLS Online TPP Program

#Question id: 9273

#SCPH06 I Botany

In the higher excited state, chlorophyll is extremely unstable; it rapidly gives up some of its energy to the surroundings as heat, and enters the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy: fluorescence, Heat loss, energy transfer, photochemistry; all process takes place in which wavelength,