Top answers

What is the difference between a competitive and a non competitive inhibitor?

Competitive inhibitors have a molecular shape similar to the substrate therefore compete with the substrate for the active site on the enzyme. If the concentration of substrate increases, the effect of the i...
DN
Answered by Dominique N. • Biology tutor
2867 Views

Describe how glucose is taken up by cells?

Glucose is absorbed into the bloodstream from the small intestine. In the bloodstream, glucose stimulates insulin release by pancreatic beta cells.Insulin binds to the insulin receptors on other cells - such...
AM
Answered by Ahmad M. • Biology tutor
4149 Views

outline the steps of DNA transcription

RNA polymerase is the enzyme used to bind the DNA section of interest and recruit the free bases needed to form a new mRNA strand. DNA is transcribed on to an mRNA strand because it is too large to leave the...
AA
Answered by Adaeze A. • Biology tutor
3424 Views

Describe the flow of blood through the heart

First of all be aware of the compartments the blood will flow through such as the left and right atria and ventricles. Note the bicuspid, tricuspid and semi lunar valve positions.Blood entering the right atr...
SK
Answered by Sarah K. • Biology tutor
3227 Views

When an antigen binds to a receptor on a T cell, the T cell becomes activated and differentiates into different types of T cells. What are these T cells and what are their functions? (6 marks)

There are three main types of T cell. T helper (CD4+), T killer (CD8+) and T memory. The CD4+/8+ are complex proteins on the surface of each respective T cell that they use in their function. T helper cells ...
ZM
Answered by Zachary M. • Biology tutor
4188 Views