In a plot of l/V against 1/[S] for an enzyme-catalyzed reaction, the presence of a competitive inhibitor will alter the:

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#Question id: 4935

#SCPH28 | Zoology

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

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#Question id: 16125

#SCPH01 Biochemistry

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.              

From these experiments,  Classify  the  gln2– and gln3– mutations in terms of their basic genetic properties explaining the rationale behind your conclusions. Based on these properties make a proposal for the types of regulatory functions affected by the gln2– and gln3– mutations.

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#Question id: 1301

#SCPH06 I Botany

The cell walls of bacteria, fungi, and plant cells, and the extracellular matrix of animal cells are all external to the plasma membrane. Which of the following characteristics are common to all of these extracellular structures?

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#Question id: 17815

#SCPH01 Biochemistry

You have two distantly related proteins. Which of the following sets is the best for comparing them?

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#Question id: 20848

#SCPH01 Biochemistry

In which form does reduction was the major electron accepting process close to a groundwater hydrocarbon spill while methanogenesis predominated downgradient from the spill.