You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.              

 How many units of ß-galactiosidase would you expect to be expressed from deletion 4 in a gln2– mutant?

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#Question id: 9207

#SCPH06 I Botany

Loss of biodiversity matters not only with regard to mammals or other vertebrates, but also microbes. Why are microbes worthy of discovery and protection from extinction?

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#Question id: 1096

#SCPH28 | Zoology

Which of the following processes generally requires protein phosphorylation?

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#Question id: 20997

#SCPH06 I Botany

CH3Br present in soil are usually biodegraded by which microorganism?

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#Question id: 2074

#I Life Science/ Life Sciences Group – I-V

In some cells, there are many ion electrochemical gradients across the plasma membrane even though there are usually only one or two proton pumps present in the membrane. The gradients of the other ions are most likely accounted for by:

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#Question id: 3855

#SCPH05 I Biotechnology

In eukaryotes, which of the following modifications is made to a primary transcript prior to its transport out of the nucleus?