Top answers

Why does cholesterol need to be reduced and how do statins do this?

-High levels of cholesterol (especially LDL's, the 'bad' type) clog the arteries with a thick fatty substance -This causes narrowing of the coronary arteries (which carry blood to the heart) -The narrowing a...
IP
Answered by Isobel P. • Biology tutor
3175 Views

Can you explain the process of synaptic transmission?

A synapse is the junction between a neurone and the next cell. At the synapse there is both a presynaptic neurone, with vesicles containing neurotransmitters (chemical messengers) and a post synaptic neuoron...
JD
Answered by Jack D. • Biology tutor
4110 Views

Explain the role of Calcium in muscle contraction

Action potential that travels down the motor neuron and reaches neuron terminal causes release of Calcium form sarcoplasmic reticulum. This released calcium will reveal binding sites on actin, hence exposing...
ST
Answered by Stasa T. • Biology tutor
23396 Views

Identify 3 different antibiotics and describe how they work.

Antibiotics are important for treating bacterial infections that may be making us ill. There are many different antibiotics that work in different ways, and therefore they are suitable for treating different...
MH
Answered by Madeleine H. • Biology tutor
3862 Views

What is the difference between mitosis and meiosis?

Mitosis is the production of two genetically identical diploid daughter cells in one division while meiosis is the formation of four genetically different haploid daughter cells in two divisions. Mitosis occ...
OD
Answered by Oskar D. • Biology tutor
5447 Views