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TLS Online TPP Program

#Question id: 23288

The staining of chromosomes with a special dye called Giemsa reveals G bands, which distinguish

#Unit 8. Inheritance Biology
  1. the regions of DNA, which are rich in cytosine–guanine base pairs
  2. the regions of DNA occupied by centromeric heterochromatin
  3. viewing the chromosomes under ultraviolet light results from differences in the relative amounts of cytosine–guanine (C–G) and adenine–thymine base pairs
  4. areas of DNA that are rich in adenine–thymine (A–T) base pairs
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TLS Online TPP Program

#Question id: 33115

#Unit 1. Structure and Function of Biomolecules

kcat/Km is an 
TLS Online TPP Program

#Question id: 33116

#Unit 1. Structure and Function of Biomolecules

 Represents
TLS Online TPP Program

#Question id: 33227

#Unit 1. Structure and Function of Biomolecules

An uncatalyzed keto– enol tautomerization reaction occurs quite slowly as a result of the high free energy of its carbanion-like transition state called as
TLS Online TPP Program

#Question id: 33228

#Unit 1. Structure and Function of Biomolecules

If velocity of the reaction is increased by proton abstraction by a species, mechanism is called as
TLS Online TPP Program

#Question id: 33229

#Unit 1. Structure and Function of Biomolecules

The effects of pH on enzymes depends on a combination of factors: 
(a) Most enzymes are active within only a narrow pH range, typically 5 to 9. 
(b) the ionization states of the amino acid residues involved in the catalytic activity of the enzyme
(c) the variation of protein structure (usually significant only at extremes of pH).
Which of the above is correct
TLS Online TPP Program

#Question id: 33230

#Unit 1. Structure and Function of Biomolecules

The pH dependence of the rate of the reaction catalyzed by fumarase produces the following curve. Which amino acid/s likely to be present in the active site