#Question id: 15486
#SCPH06 I Botany
#Question id: 2262
#I Life Science/ Life Sciences Group – I-V
Ribosomes are made up of ____ subunits.
#Question id: 9172
#SCPH28 | Zoology
Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of ________.
#Question id: 4954
#SCPH06 I Botany
If natural selection in a particular environment favored genetic systems that permitted the production of daughter ʺcellsʺ that were genetically dissimilar from the mother ʺcells,ʺ then one should expect selection for
I. polynucleotide polymerase with low mismatch error rates.
II. polynucleotide polymerases without proofreading capability.
III. batteries of efficient polynucleotide repair enzymes.
IV. polynucleotide polymerases with proofreading capability.
V. polynucleotide polymerases with high mismatch error rates.
#Question id: 15871
#SCPH05 I Biotechnology
Various sterilization techniques used in plant tissue culture work;
Sterilization technique |
Materials sterilized |
A) Dry heat |
i) Media, culture vessels, other glass plasticwarc, contaminated
cultures |
B) Autoclaving |
ii)
Heat labile compounds like GA3, ABA, zeatin, urea,·enzymes, etc. |
C) Surface sterilization |
iii) Empty glassware, instruments like scalpels, forceps,
needles |
D) Liquid (membrane filter of 0.45 μm or smaller pore size) |
iv)
All plant materials to be cultured |