What role do phosphatases play in signal transduction pathways?

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#Question id: 19207

#SCPH01 Biochemistry

Which type of cells can be used in whole cell biosensor?

1. Live

2. Dead

3. Elongation 

Which of the following combination are correct?

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#Question id: 15655

#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 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: 11333

#SCPH06 I Botany

Small geographic areas with high concentrations of endemic species and a large number of endangered and threatened species are known as

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#Question id: 4143

#SCPH01 Biochemistry

It is possible to convert the Cys that is a part of Cys-tRNACys to Ala by a catalytic reduction.  If the resulting Ala-tRNACys were added to a mixture of (1) ribosomes, (2) all the other tRNAs and amino acids, (3) all of the cofactors and enzymes needed to make protein in vitro, and (4) mRNA for hemoglobin, where in the newly synthesized hemoglobin would the Ala from Ala-tRNACys be incorporated?

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#Question id: 4132

#SCPH28 | Zoology

In E. coli, aminoacyl-tRNA synthetases: