Name the type of RNA which folds up to give a cloverleaf secondary structure.

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#Question id: 3055

#SCPH06 I Botany

300 CFU will form on petriplate if 0.1ml sample plating from 10^6 diluted sample. Original sample contain bacteria per ml is

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#Question id: 15699

#SCPH05 I Biotechnology

The PROSITE pattern representing the conserved sequence motif for a new family of AMP binding protein is [LIVMFY]-X(2)-[STG]-[STAG]-G-[ST]. You are given a sequence of a 15-amino acid stretch starting from the first residue of the motif. Which one of the following proteins is likely to have AMP binding function?

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#Question id: 16127

#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.

The GLN1 gene shows a rather complex regulation in response to different amino acids. When either glutamate (glu) or glutamine (gln) is added to the medium, the amount of GS expression diminished and when both glutamate and glutamine are added to the medium GS expression is shut off completely. The effects of different mutants on the response to glu and gln are shown below.

Which of the models from best fits these experimental results? Complete the model for the regulation of GLN1 that includes the effects of glu and gln.      

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#Question id: 4196

#SCPH28 | Zoology

The role of EF-Tu in bacterial protein synthesis is

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#Question id: 4304

#SCPH06 I Botany

Using codon table, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.