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.

#Unit 1. Molecules and their Interaction Relevant to Biology

(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: 20979

#Unit 12. Applied Biology

Which of the following biosensors use the movement of electrons produced during redox reactions?

TLS Online TPP Program

#Question id: 20980

#Unit 12. Applied Biology

Given below is the diagram of biosensor. Identify the unmarked component.

TLS Online TPP Program

#Question id: 20981

#Unit 12. Applied Biology

For constructing the glucose sensor, which of the following is used as a gel?

TLS Online TPP Program

#Question id: 20982

#Unit 12. Applied Biology

Which is considered as the most recalcitrant of the BTEX compounds, and of greatest regulatory concern because of its associated health impacts?

TLS Online TPP Program

#Question id: 20983

#Unit 12. Applied Biology

Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?

2. Ethylbenzene

Which of the below combinations are correct?

TLS Online TPP Program

#Question id: 20984

#Unit 12. Applied Biology

Benzene being the most recalcitrant was earlier believed to be