Top answers

Biology
A Level

Explain the process of eutrophication.

Nitrates and phosphates are leached into a slow-moving water body (e.g. a lake). This results in an algal bloom on the surface of the water body. The algae block sunlight and prevent it from reaching aqua...

VB
Answered by Vishal B. Biology tutor
3571 Views

How does atherosclerosis form?

Atherosclerosis occurs as a result of damage to the endothelial lining of blood vessels. Once the damage has occurred, the body induces an inflammatory response, causing ...

DG
Answered by Daniella G. Biology tutor
3615 Views

Explain one way in which starch molecules are adapted to its function in plant cells

Starch molecules are insoluble and therefore don't affect the water potentialThey are also large and therefore can't leave the cellThey are compact and c...

Answered by Biology tutor
15468 Views

How does phagocytosis occur in macrophages?

A macrophage attaches to a pathogen by the receptors on the pathogen and macrophage binding. The pathogen is then engulfed and a phagosome forms, where a vesicle surrounds the pathogen. A lysosome moves t...

HM
Answered by Hamza M. Biology tutor
2530 Views

Describe the process of synaptic transmission at the neuromuscular junction.

The neuromuscular junction describes the chemical connection between a presynaptic nerve, and the muscle fibre membrane (sarcolemma). Depolarisation of the presynaptic nerve membrane (by propagation of an...

EM
Answered by Eleanor M. Biology tutor
2738 Views

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