The protein concentration in DNA extraction sample measured by

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#Question id: 20847

#SCPH01 Biochemistry

In groundwater hydrocarbon spill which metal reduction was the major electron accepting process?

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#Question id: 15620

#SCPH01 Biochemistry

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. What does this result tell you about the relationship between the lac3– and lac1- mutations?  

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#Question id: 1027

#SCPH06 I Botany

Which of the following bacteria lack a cell wall?

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#Question id: 3662

#SCPH05 I Biotechnology

______________ refers change to the DNA that affects expression of a gene but is not inherited.

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#Question id: 11635

#SCPH01 Biochemistry

Given below, is the result of a complementation test for eight independent mutants (1 to 8).