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: 14289

#SCPH05 I Biotechnology

In a fermenter the impeller diameter is increased from 0.5m to 1m and the rpm is increased from 100 rpm to 400 rpm. Reynolds number will increase by?

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#Question id: 15653

#SCPH01 Biochemistry

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. You have isolated a mutation that causes constitutive melibiase activity, which you designate MelA–. P1 phage mapping experiments using a Tn5 insertion linked to Mel1 show that MelA– is not linked to Mel1. Moreover you find that when an amber suppressor is introduced into a MelA– mutant, normal melibiase regulation is restored. Classify the MelA– mutation on the basis of genetic properties,  make a proposal for the type of regulatory functions affected by the MelA– mutation?

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#Question id: 15926

#SCPH05 I Biotechnology

Name the organism on which first cell line was observed?

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#Question id: 2930

#SCPH05 I Biotechnology

The S. cerevisiae homolog of Xenopus MPF is:

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#Question id: 488

#SCPH05 I Biotechnology

Which of the following compounds cannot serve as the starting material for the synthesis of glucose via gluconeogenesis?