Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 37846
TLS Online TPP Program

#Question id: 749

Which of the following is correct for the A form of DNA structures?

#I Life Science/ Life Sciences Group – I-V

  1. a wider than B form.

  2. more compressed structure in which the base pairs are tilted with respect to the helix axis, and actually lie off the axis.

  3. The helical repeat of the A-form is around 11 bp/turn

  4. All of the above are correct.

More Questions
TLS Online TPP Program

#Question id: 4336

#SCPH05 I Biotechnology

Which of the following processes would result from a mutation that deactivates a regulatory gene of a repressible operon in an E. coli cell?
TLS Online TPP Program

#Question id: 2638

#I Life Science/ Life Sciences Group – I-V

Which of these systems give the best mode for turning trp operon off?
TLS Online TPP Program

#Question id: 13098

#SCPH01 Biochemistry

You are a scientist who is using genomics to currently study a new bacterial species that no one has ever studied before. The following sequence is a piece of DNA within the coding region of a gene that you have recently sequenced.
 
How many of the 6 potential open reading frames are actually open in this sequence shown above?
TLS Online TPP Program

#Question id: 15728

#SCPH28 | Zoology

Single cells can be cultured using the following techniques:
(1) Filter paper raft-nurse tissue technique
(2) Microchamber technique
(3) Microdrop method
(4) Bergman's plating technique
(5) Thin layer liquid medium
Select the option with correct choices.
TLS Online TPP Program

#Question id: 14476

#SCPH01 Biochemistry

A bag contains 6 white balls, 9 black balls. The probability of drawing a black ball is