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#Question id: 302


Which of the following statements regarding covalent bond is not true?

#SCPH28 | Zoology
  1. The electrons are shared between atoms

  2. The bond is non-directional

  3. The strength of the bond depends upon the extent of overlapping

  4. The bond formed may or may not be polar

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TLS Online TPP Program

#Question id: 16129

#SCPH01 Biochemistry

5 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.
Describe the cis-acting elements in the GLN1 promoter that are evident from these experiments, giving both their position and as much of their function as you can deduce.

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#Question id: 4142

#SCPH06 I Botany

The large structure consisting of a mRNA molecule being translated by multiple copies of the macromolecular complexes that carry out protein synthesis is called a:

TLS Online TPP Program

#Question id: 12938

#SCPH06 I Botany

What is the main advantage of using Yeast Artificial Chromosome based vector over other vectors?
1. It has ability to clone very large fragments of DNA.
2. YAC vectors do not contain origin of replication sites 
3. It has insert  range up to 2000 kb.
4. It help in genome mapping and sequencing projects.

TLS Online TPP Program

#Question id: 1753

#SCPH01 Biochemistry

In the germinal center, B-cells become memory cells under the influence of:

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#Question id: 558

#I Life Science/ Life Sciences Group – I-V

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