Enzyme Regulation - Allosteric Enzymes

Question 1 of 7

Medal-premium 1

Which answer best describes Allosteric Enzymes?

Select one of the following:

  • Allosteric enzymes are multi-subunit proteins with one or more active site on each subunit.

  • Allosteric enzymes are multi-subunit proteins with one active site on their subunit.

  • Allosteric enzymes are proteins involved in making and breaking of covalent bonds.

Question 2 of 7

Medal-premium 1

What type of graphical representation best describes the activity of Allosteric Enzymes?

Select one of the following:

  • Hyperbolic Curve

  • Sigmoidal Curve

  • Linear Regression

Question 3 of 7

Medal-premium 1

Allosteric Enzymes are said to behave cooperatively, choose the answer that best describes this behaviour?

Select one of the following:

  • The binding of a substrate at one active site induces a conformational change in the protein that is conveyed to other active sites and altering their affinity for substrate molecules.

  • The binding of a substrate at one active site inhibits a conformational change in the protein.

  • The binding of a substrate at one active site induces a conformational change in the protein that is conveyed to other active sites and does not affect the affinity for substrate molecules.

Question 4 of 7

Medal-premium 1

Choose the two models that describe Allosteric Enzymes and their effects on proteins?

Select one or more of the following:

  • Concerted Model

  • Ping-Pong Model

  • Michelis-Menten Model

  • Sequential Model

Question 5 of 7

Medal-premium 1

Aspartate Carbamoyltransferase ATCase is an example of an allosteric enzyme, What process is it involved in?

Select one of the following:

  • Synthesis of Pyrimidine – the formation of N-carbamoylaspartate.

  • Synthesis of Proteins - the formation of Peptide Bonds

  • Synthesis of Purines - the formation of Adenylate

Question 6 of 7

Medal-premium 1

What enzyme acts as an allosteric inhibitor in the synthesis of pyrimidines?

Select one of the following:

  • Cytosine Triphosphate

  • Adenine Triphosphate

  • Cytosine Diphosphate

Question 7 of 7

Medal-premium 1

What intermediate is formed in the synthesis of pyrimidines? What is the role of this intermediate?

Select one of the following:

  • Adenosine Tri Phosphate, ATP - Allosteric Inhibitor

  • Adenosine Di Phosphate, ADP - Allosteric Activator

  • Adenosine Tri Phosphate, ATP - Allosteric Activator

Icon_fullscreen

Enzyme Regulation - Allosteric Enzymes

daniel.praecox
Quiz by , created almost 3 years ago

This quiz assesses the content covered in the notes and flash cards concerning regulation of allosteric enzymes.

Eye 305
Pin 2
Balloon-left 0
jill.examtime
Created by jill.examtime almost 3 years ago
daniel.praecox
Copied by daniel.praecox almost 3 years ago
Close