Top answers

Describe the process of ultrafiltration in the Kidneys.

Ultrafiltration occurs in the nephron, the functional unit of the kidney. Blood enters a coiled network of vessels called the glomerulus from the afferent arteriole at a high hydrostatic pressure. The glomer...
MM
Answered by Matthew M. • Biology tutor
23291 Views

Describe the structure of globular proteins.

There are 4 levels of structure associated with a globular protein; primary, secondary, tertiary and quarternary. The primary structure is the organisation of amino acids, bonded by peptide bonds. The second...
CK
Answered by Charlie K. • Biology tutor
11685 Views

Explain eutrophication.

How I would explain to the student:pollution of streams and rivers because of fertiliser use, open sewers into water courseexcess nutrients get washed up in water courseplants flourish using these mineralsso...
TD
2950 Views

Explain the post-transcriptional changes that occur in mRNA before translation.

After DNA has been transcribed into mRNA but before is it is translated into it's polypeptide amino acid chain, post-transcriptional changes take place.DNA, and therefore its corresponding mRNA are made up o...
EC
Answered by Ellen C. • Biology tutor
4162 Views

Describe how phagocytosis of a virus leads to the secretion of an antibody against this virus antigen.

Phagosome/vesicle fuses with lysosome;(Virus) destroyed by lysozymes/hydrolytic enzymes;Peptides/antigen (from virus) are displayed on the cell membraneHelper T cell/TH cell binds to the antigen (on the anti...
VG
Answered by Victoria G. • Biology tutor
3748 Views