The following phylogeny shows six living species (a-f) and five ancestral (now extinct) species (#1-5). If the phylogeny had been developed on the basis of similarities in bone structure, which of the following predictions would you make in terms of the structure of a particular enzyme?

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#Question id: 567

#SCPH28 | Zoology

Penicillin and related drugs inhibit the enzyme; this enzyme is produced by 

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#Question id: 15584

#SCPH05 I Biotechnology

Increasing the agitation in a reactor increases oxygen transfer primarily because:

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#Question id: 15655

#SCPH06 I Botany

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 mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

 

Describe the proposal for the type of regulatory functions affected by the MelB– mutation.

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#Question id: 478

#SCPH05 I Biotechnology

The steps of glycolysis between glyceraldehyde 3-phosphate and 3-phosphoglycerate involve all of the following except:

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#Question id: 17271

#SCPH05 I Biotechnology

Electrophoretic resolution can be mainly change by changing the