TLS Online TPP Program

#Question id: 4134


The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

#Unit 3. Fundamental Processes
  1. always recognizes only one specific tRNA.

  2. attaches a specific amino acid to any available tRNA species.

  3. attaches the amino acid at the 5' end of the tRNA.

  4. catalyzes formation of an ester bond.

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TLS Online TPP Program

#Question id: 10133

#Unit 6. System Physiology – Plant

The PSI reaction center complex is a large multi-subunit complex in which the antenna chlorophylls are associated with the reaction center Components of the PSI reaction center are organized around as follows choose the incorrect one;

TLS Online TPP Program

#Question id: 10132

#Unit 6. System Physiology – Plant

Which of the following statements would be correct for photophosphorylation ?

TLS Online TPP Program

#Question id: 10131

#Unit 6. System Physiology – Plant

The detailed chemical mechanism of the oxidation of water to O2 is not yet well understood, but with structural information shows_one electron carrier, generally identified as Yz, functions between the oxygen-evolving complex and P680 to function in this region, Yz needs to have a very strong tendency to retain its electrons, this species has been identified as;

TLS Online TPP Program

#Question id: 10128

#Unit 6. System Physiology – Plant

PSII also involve in oxidation of water molecules, water is a very stable molecule that’s why  Oxidation of water to form molecular oxygen is very difficult, Many studies have provided a substantial amount of information about the process known;

which of the following are false ?

TLS Online TPP Program

#Question id: 9598

#Unit 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

TLS Online TPP Program

#Question id: 9597

#Unit 6. System Physiology – Plant

The reaction centre bacteriochlorophyll from purple photosynthetic bacteria was similarly identified as-