TLS Online TPP Program

#Question id: 4125


Which of the following are features of the wobble hypothesis?

#Section 3: Genetics, Cellular and Molecular Biology
  1. A naturally occurring tRNA exists in yeast that can read both arginine and lysine codons.

  2. A tRNA can recognize only one codon.

  3. Some tRNAs can recognize codons that specify two different amino acids, if both are nonpolar.

  4. The “wobble” occurs only in the first base of the anticodon.

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TLS Online TPP Program

#Question id: 9597

#Section 2: General Biology

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

TLS Online TPP Program

#Question id: 9598

#Section 2: General Biology

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: 9599

#Section 2: General Biology

The primary donor of PSI, P700, is a dimer of chlorophyll a molecules, in primary donor chlorophyll, additional chlorophylls molecules such as

TLS Online TPP Program

#Question id: 10127

#Section 2: General Biology

In higher plants, the multi-subunit protein supercomplex has two complete reaction centers and some antenna complexes. The core of the reaction center consists of two membrane proteins known as D1 and D2, Which contained a multi-subunit protein supercomplexes;

TLS Online TPP Program

#Question id: 10129

#Section 2: General Biology

Oxidation of water to form molecular oxygen is very difficult: The photosynthetic oxygen-evolving complex is the only known biochemical system that carries out this reaction which essential cofactor are involved in the water-oxidizing process?

TLS Online TPP Program

#Question id: 10131

#Section 2: General Biology

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;