Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 41286
TLS Online TPP Program

#Question id: 3868

The sigma factor of E. coli RNA polymerase: 

#SCPH05 I Biotechnology

  1. associates with the promoter before binding core enzyme.

  2. combines with the core enzyme to confer specific binding to a promoter.

  3. is inseparable from the core enzyme.

  4. is required for termination of an RNA chain.

More Questions
TLS Online TPP Program

#Question id: 12942

#SCPH28 | Zoology

Name a single - stranded uracil containing vector which is grown in a selectable host deficit of the enzymes.
TLS Online TPP Program

#Question id: 357

#SCPH28 | Zoology

What is the concentration of H+ in a solution of 0.1 M NaOH?
TLS Online TPP Program

#Question id: 14308

#SCPH05 I Biotechnology

Pseudomonas putida with µm = 0.5 h-1 is cultivated in a continuous culture under aerobic conditions where D = 0.28 h-1 . The carbon and energy source in the feed is lactose with aconcentration of S0 = 2 g/l. The effluent lactose concentration is desired to be S = 0.1 g/l. If the growth rate is limited by oxygen transfer, by using the following information:


What should be the oxygen-transfer coefficient (kLa) in order to overcome oxygentransfer limitation (i.e., CL = 2 mg/l)? ___________________
TLS Online TPP Program

#Question id: 1302

#SCPH28 | Zoology

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in which of the following organelles or structures?
TLS Online TPP Program

#Question id: 6974

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

Where are the stem cells that renew the epithelium of the gut found?