Top answers

How are new drugs developed and tested?

When a substance that is found that could be potentially useful for treating a disease, it can be developed into a drug. The drug then needs to be tested to check for safety, efectiveness and dosage. The dru...
GA
Answered by Grace A. • Biology tutor
3475 Views

Outline the typical immune response triggered when a pathogen infects the body

Cells under attack release histamine --> attracts macrophages Macrophage engulfs pathogen into a phagocytic vacuole by phagocytosis Macrophage carries out antigen presentation of pathogenic antigen from c...
GM
Answered by Grace M. • Biology tutor
3461 Views

What is atherosclerosis and how does it occur?

Atherosclerosis is a build up of fat deposits in large and medium sized arteries. This causes narrowing of the blood vessels and can lead to cardiovascular disease. If a plaque ruptures it can cause occlusio...
RW
Answered by Rebecca W. • Biology tutor
4198 Views

Explain how competitive and non-competitive inhibition affects enzymes.

When an enzyme is inhibited it means that the specific substrate that normally fits in the enzymes active site can no longer bind due to the active site having changed shape or having been blocked. Competiti...
ZB
Answered by Zoe B. • Biology tutor
5134 Views

Compare the structure of prokaryotic and eukaryotic organisms.

Prokaryotic and eukaryotic organisms have some similar structures: cells membranes (selectively permeable membranes surrounding cells and controlling the entry and exit of materials), cytoplasm (the living s...
PT
Answered by Paige T. • Biology tutor
4949 Views