TLS Online TPP Program

#Question id: 9590


The efficiency of energy transfer between the two tuning forks depends on their distance from each other and their relative orientation, as well as on their vibrational frequencies, or pitches, Energy transfer in antenna complexes is usually very efficient;

#Unit 6. System Physiology – Plant
  1. The electron transfer is a purely physical phenomenon, energy transfer involves chemical (redox) reaction
  2. Approximately 95 to 99% of the photons absorbed by the antenna pigments have their energy transferred to the reaction centre, where it can be used for photochemistry
  3. The efficiency of energy is measure in terms of the fraction of absorbed photons that engage in photochemistry
  4. Approx. 2 to 10% of the overall energy transfer efficiency per photon, including all loss processes and considering the entire solar spectrum as energy source, is significantly lower
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TLS Online TPP Program

#Question id: 13073

#Unit 13. Methods in Biology

Restriction enzymes must be use in RFLP and RAPD markers for genome mapping in plants;

TLS Online TPP Program

#Question id: 13074

#Unit 13. Methods in Biology

Type of probe used in RFLP;

TLS Online TPP Program

#Question id: 13075

#Unit 13. Methods in Biology

Radioisotopes must be used in RFLP and RAPD markers

TLS Online TPP Program

#Question id: 13076

#Unit 13. Methods in Biology

Restriction fragment length polymorphism denotes that a single restriction enzyme produces fragments of different lengths from the same stretch of genomic DNA of different strains of a species or from different related species. RFLPs are detected as follows:

i.  Large molecular weight genomic DNA is isolated from several strains or related species;

ii.  The fragments in these digests are separated through electrophoresis

iii.  These 'DNAs are then digested with a selected restriction enzyme

iv.  Exposed to a suitably radio-labelled appropriate DNA probe under conditions favouring DNA: DNA hybridization

v.  The resulting gel lanes are transferred and fixed to a suitable solid support and

vi.   The free probes are removed

vii.  The fragments to which the probe has hybridized are detected by filming them as distinct bands on a suitable photofilm through autoradiography.

TLS Online TPP Program

#Question id: 13077

#Unit 13. Methods in Biology

The DNA probes for RFLP may NOT be obtained from

TLS Online TPP Program

#Question id: 13078

#Unit 13. Methods in Biology

RFLPs have several unique advantages except this one;