#Question id: 4698
#Unit 11. Evolution and Behavior
It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that
#Question id: 7288
#Unit 5. Developmental Biology
Following statements are regarding to the expression of genes in floral quartate model in Arabidopsis thaliana.
A. Sepals- AP1(heterodimer) + SEP(homodimer)
B. Petals-AP1(monomer)+PI(monomer)+AP3(monomer)+SEP(monomer)
C. Stamens- AP3(monomer)+PI(monomer)+AG(monomer)+SEP(monomer)
D. Carpels- AG(homodimer)+SEP(homodimer)
Which of the following genetic combinations are incorrect?
#Question id: 14503
#Unit 13. Methods in Biology
#Question id: 886
#Unit 1. Molecules and their Interaction Relevant to Biology
An experiment of Anfinsen on ribonuclease A (RNase A) showed that proteins can be denatured reversibly by 2-mercaptoethanol and 8 M urea. The protein must therefore renature spontaneously;
a) Remove mercaptoethanol and then removal of the urea
b) Removal of the mercaptoethanol allows the protein to re-form disulfide bonds in the presence of oxygen and then removal of the urea
c) Removal of the denaturant (urea) and reductant (mercaptoethanol) allows the protein to renature and re-form disulfide bonds in the absence of oxygen
d) Adding a small amount of mercaptoethanol to the scrambled protein in the absence of O2 catalyzes its conversion to the active enzyme
Which one of the following steps will leads to regaining of the full activity of ribonuclease A (RNase A)
#Question id: 12862
#General Aptitude