TLS Online TPP Program

#Question id: 5227


One of the characteristics of retrotransposons is that

#11. Evolution and Behavior
  1. they code for an enzyme that synthesizes DNA using an RNA template.

  2. they are found only in animal cells.

  3. they generally move by a cut-and-paste mechanism.

  4. they contribute a significant portion of the genetic variability seen within a population of gametes.

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TLS Online TPP Program

#Question id: 9579

#10. Ecological Principles

Allen’s rule states that,

TLS Online TPP Program

#Question id: 9585

#6. System Physiology – Plant

In light reaction the reaction centre of PSII  receives electron from water molecules by splitting into oxygen, If 5 oxygen molecules evolved per 50 quanta was

absorbed then what is the quantum yield?

TLS Online TPP Program

#Question id: 9589

#6. System Physiology – Plant

The physical mechanism by which excitation energy is conveyed from the chlorophyll that absorbs the light to the reaction centre, By this mechanism the excitation energy is transferred from one molecule to another by a nonradioactive process, this mechanism is known as

TLS Online TPP Program

#Question id: 9595

#6. System Physiology – Plant

The process is that the absorbed photon causes an electron rearrangement in the reaction centre chlorophyll, followed by an electron transfer process in which part of the energy in the photon is captured in the form of

TLS Online TPP Program

#Question id: 9596

#6. System Physiology – Plant

The reaction centre chlorophyll is transiently in an oxidized state after losing an electron and before being re-reduced by its electron donor, what characteristics has been shown by chlorophylls in an oxidized state?

TLS Online TPP Program

#Question id: 9598

#6. System Physiology – Plant

In the oxidized state, reaction centre chlorophylls contain an unpaired electron, Molecules with unpaired electrons can often be detected by a magnetic-resonance technique known as