When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

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#Question id: 15868

#SCPH05 I Biotechnology

If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?

a) due to the time taken for doubling of cell number

b) duration of a cell generation is too large, depending mainly on the plant species.

c) stationary phase is forced on the culture by a depletion of the nutrients

d) due to an accumulation of cellular wastes

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#Question id: 2637

#SCPH01 Biochemistry

Which of these operons is anabolic?

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#Question id: 5038

#SCPH01 Biochemistry

The folding of sheets of cells, the migration of cells, and cell death are all mechanisms of

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#Question id: 3527

#SCPH12 I Genetics

Which of the following genetic cross would produce 1/4 yellow round, 1/4 yellow wrinkle, 1/4 Green round and ¼ Green Wrinkle seeded plant?

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#Question id: 18636

#SCPH01 Biochemistry

Number of rooted trees in a phylogeny of three sequences is –