Sieve element sap is rich in sugars and other organic molecules, These molecules represent an energy investment for the plant. How their loss be prevented when sieve elements are damaged?

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#Question id: 557

#SCPH06 I Botany

The number of substrate molecules converted to product in a given unit of time by a single enzyme molecule at saturation is referred to as the:

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#Question id: 15658

#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.

Next, you isolate a third mutant, MelC–, which gives constitutive melibiase expression. The MelC– mutation is closely linked to Mel1 and MelB–. Genetic tests of the MelC– mutation yield the following:

 

As above, classify the MelC– mutation in terms of its basic genetic properties and explain how you arrived at your conclusions.

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#Question id: 827

#SCPH01 Biochemistry

Which of the following factor are not responsible for the protein denaturation?

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#Question id: 1639

#SCPH05 I Biotechnology

T-cell surface receptors for antigen partly recognize:

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#Question id: 8922

#SCPH28 | Zoology

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?