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TLS Online TPP Program
#Question id: 636
#SCPH05 I Biotechnology
DNA polymerase contains a lysine residue that is important for binding to DNA. Mutations were found that converted this lysine to either glutamate, glycine, valine, or arginine. Which mutations would be predicted to be the most and least harmful to the ability of the enzyme to bind DNA?
|
Most |
Least |
|
|
(A) |
Valine |
Aspartate |
|
(B) |
Glycine |
Arginine |
|
(C) |
Arginine |
Glycine |
|
(D) |
Glutamate |
Arginine |
TLS Online TPP Program
#Question id: 12932
#SCPH01 Biochemistry
Why mRNA cannot be used directly in cloning?
TLS Online TPP Program
#Question id: 5037
#SCPH01 Biochemistry
Genes control development by:
TLS Online TPP Program
#Question id: 13066
#SCPH28 | Zoology
Precision will be reduced, but yield will be increased Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
Which of the following is a codominant marker?
TLS Online TPP Program
#Question id: 15727
#SCPH05 I Biotechnology
The stationary phase is forced on the culture by , identify correct option
1. Depletion of the nutrients
2. Due to accumulation of cellular wastes
3. Accumulation of the nutrients
4. Removal of cellular wastes