TLS Online TPP Program

#Question id: 4209


Tryptophan synthesis can be controlled by a process called attenuation in which the levels of tryptophan in the cell control translation by

#Unit 3. Fundamental Processes
  1. the binding of the RNA polymerase to the genome.

  2. the alteration of the repressor protein.

  3. the folding of mRNA into hairpin loops.

  4. genes rich in codons for tryptophan.

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TLS Online TPP Program

#Question id: 23685

#Unit 13. Methods in Biology

What is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting the plasmid into a bacterium?
I. Transform bacteria with recombinant DNA molecule.
II. Cut the plasmid DNA using restriction enzymes.
III. Extract plasmid DNA from bacterial cells.
IV. Hydrogen-bond the plasmid DNA to non plasmid DNA fragments.
V. Use ligase to seal plasmid DNA to non plasmid DNA.

TLS Online TPP Program

#Question id: 10807

#Unit 6. System Physiology – Plant

Cyanogenic Glycosides and Glucosinolates are nitrogen containing secondary metabolites in plants. Following are some statements regarding the action of Cyanogenic Glycosides and Glucosinolates;

a) Cyanogenic Glycosides release the poison hydrogen cyanide by the action of enzyme known as Hydroxynitrile lyase

b) Release of the mustard-smelling volatiles from glucosinolates is catalyzed by a hydrolytic enzyme, called a thioglucosidase or myrosinase

c) substerate for Glycosidase is Cyanogenic glycoside and Thioglucosidase is Aglycone

d) Like cyanogenic glycosides, glucosinolates are stored in the intact plant separately from the enzymes that hydrolyze them, and they are brought into contact with these enzymes only when the plant is crushed

Which of the following combinations of above statement is true?

TLS Online TPP Program

#Question id: 27155

#Unit 7. System Physiology – Animal

Another name for vasopressin is

TLS Online TPP Program

#Question id: 26543

#Unit 3. Fundamental Processes

What are the function of P-TEFb  
a.It Phosphorylate NELF & DSIF
b.It Phosphorylate S2/7 OF CTD
c.It Phosphorylate SPT 5

TLS Online TPP Program

#Question id: 5301

#Unit 11. Evolution and Behavior

Which of the following processes is an early step in the whole-genome shotgun approach to sequencing?