Practice Questions

TLS Online TPP Program

#Question id: 801

Identify the type of DNA from the structures given below and match the correct form with its characteristics described.

#Part-B Specialized Branches in Biotechnology

(ii) – The more compact A form of DNA has 11 bp per turn and shows a large tilt of the base pairs with respect to the helix axis.
(i) – The B form, which is observed at high humidity, most closely corresponds to the average structure of DNA under physiological conditions.
(iii) – Z DNA is a left-handed helix and has a zigzag (hence “Z”) appearance and has an anti-conformation of glycosyl bond.
(i) – The A form which is observed under low humidity has a structure similar to the structure that RNA adopts when double-helical.

More Questions

TLS Online TPP Program

#Question id: 15173

#Part-B Specialized Branches in Biotechnology

Microbes such as Chlorobium and Chromatium develop as visible green and purple zones. These microorganisms use

TLS Online TPP Program

#Question id: 43

#Part-A Aptitude & General Biotechnology

If 10 g of ice at 0°C is converted to water at the same temperature, the change in entropy will be- (latent heat 80 cal/g

TLS Online TPP Program

#Question id: 1574

#Part-B Specialized Branches in Biotechnology

A bacterium entering the body through a small cut in the skin will do which of the following?

TLS Online TPP Program

#Question id: 18959

#Part-A Aptitude & General Biotechnology

Vectors used for construction of genomic libraries, and their capacity is given match them correctly

A- λ EMBL series I - 300kb - 1,400 kb

B - Cosmids II - 45 kb

C – BACs and YACs (high capacity vectors) III - 20kb

TLS Online TPP Program

#Question id: 4136

#Part-A Aptitude & General Biotechnology

Which of the following is(are) true for protein synthesis in eukaryotes?