Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 40879
TLS Online TPP Program

#Question id: 10285

Some of the statements given shows the activity of PFK-1 and PFK-2, which of the following statements incorrectly shown these enzyme activity?

#SCPH05 I Biotechnology
  1. Fructose 2,6-bisphosphate is formed by phosphorylation of fructose 6-phosphate, catalyzed by phosphofructokinase-2 (PFK-2), and is broken down by fructose 2,6-bisphosphatase (FBPase-2)
  2. fructose 2,6-bisphosphate is an allosteric activator of PFK-1 activity
  3. PFK-1 is virtually inactive in the absence of fructose2,6-bisphosphate, fructose 2,6-bisphosphate has the opposite effect on FBPase-1: it reduces its affinity for its substrate, thereby slowing gluconeogenesis

  4. cAMP-dependent protein kinase, which transfers a phosphoryl group from ATP to the bifunctional protein PFK-1/FBPase-1. Phosphorylation of this protein enhances its FBPase-1 activity and inhibits its PFK-1 activity

More Questions
TLS Online TPP Program

#Question id: 11960

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

Mechanical digestion, the process of breaking down large chunks of food into smaller pieces, is important because smaller pieces of food ________.
TLS Online TPP Program

#Question id: 24442

#SCPH06 I Botany

Match the following Column I with Column II 

Column I

Column II

A. PR segment

i. Plateau portion of the ventricular action

potential

B. PR interval

ii. Conduction through atrioventricular node

C. ST segment

iii. The time from initial depolarization of the

atria to initial depolarization of the ventricles

D. ST interval

iv. An isoelectric portion of the QT interval

TLS Online TPP Program

#Question id: 18072

#SCPH06 I Botany

First invertebrates insects fossil appeared in which of the following geological ages?
a) Mesozoic b) Jurassic
c) Paleozoic d) Devonian
e) Permian f) Pennsylvanian
Which of the following combinations give the best answer?
TLS Online TPP Program

#Question id: 10970

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

A mother of blood type A+ who has always been perfectly healthy just delivered her second child. The father is of blood group O−. Knowing that the child is of blood group O− (O, Rh−), what would you expect to find in this child?
TLS Online TPP Program

#Question id: 14128

#SCPH05 I Biotechnology

Alignment method suitable for aligning closely related sequences?