Choose true and false

A. Repetitive DNA is characterized by its relatively slow rate of renaturation.

B. Satellite DNA consists of very large sequences repeated many times in tandem in large clusters.

C. In humans, the α satellite family, found in centromeric regions, has a repeat unit length of 171 bp.

D. In mammalian genomes satellite DNA is less than 10%, but in the fruit fly Drosophila virilis, it amounts to 50%.

TLS Online TPP Program

#Question id: 28059

#Unit 1. Molecules and their Interaction Relevant to Biology

Treatment of RNaseA with 8M urea, but without adding mercaptoethanol would

TLS Online TPP Program

#Question id: 28060

#Unit 1. Molecules and their Interaction Relevant to Biology

The peptide bond in proteins is 

TLS Online TPP Program

#Question id: 28061

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following force/Bonds contributes to protein stability  

a. van der Waals interactions

b. Ionic interaction

c. Hydrogen bond 

d. Di-sulphide bond

TLS Online TPP Program

#Question id: 28062

#Unit 1. Molecules and their Interaction Relevant to Biology

Thermostable proteins are stable at high temperature due to

a. Vander Waals interaction

b. Ionic bond only

c. High protein’s hydrophobic core 

d. high incidence of salt bridges

Which of the following is correct 

TLS Online TPP Program

#Question id: 28063

#Unit 1. Molecules and their Interaction Relevant to Biology

Characteristics of Thermostable proteins are  

a. loosely packed core as evidenced by a high surface-to-volume ratio.

b. High amounts of Arg

c. High amount of Ala in helices

d. Stable at high temperature due to High protein’s hydrophobic core and high incidence of salt bridges

TLS Online TPP Program

#Question id: 28064

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following Techniques can be used to for Measuring Stability of protein    

a. DSC (calorimetry) 

b. Urea gradient gels 

c. FRET

d. EPR

Which of the following is correct