Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 52504
TLS Online TPP Program

#Question id: 4339

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?

#SCPH01 Biochemistry

  1. an increase in glucose and an increase in cAMP

  2. a decrease in glucose and an increase in cAMP

  3. an increase in glucose and a decrease in cAMP

  4. a decrease in glucose and a decrease in the repressor

More Questions
TLS Online TPP Program

#Question id: 8913

#SCPH06 I Botany

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?
TLS Online TPP Program

#Question id: 18000

#SCPH05 I Biotechnology

Two-dimensional polyacrylamide gel electrophoresis separates the proteins on the basis of
TLS Online TPP Program

#Question id: 1395

#SCPH05 I Biotechnology

Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFβ?

a. overexpression of Smad2               

b. loss of Smad 4

c. overexpression of TGFβ receptor I

d. loss of TGFβ receptor II
TLS Online TPP Program

#Question id: 345

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

As the [H3O+] of the solution decreases, the [OH-] ________.
TLS Online TPP Program

#Question id: 40

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

Given that the standard free-energy change for the reaction glucose + Pi → glucose 6-phosphate is 13.8 kJ/mol, and the standard free-energy change for the reaction ATP → ADP + Pi is −30.5 kJ/mol, what is the free-energy change for the reaction glucose + ATP → glucose 6-phosphate + ADP?