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Provide an overview of the events occuring during a specific immune response.

Our body's immune system is responsible for preventing our organism's infection from foreign ones. Any such foreign particle that may trigger an immune response is known as an antigen. What's really impressi...
DA
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Outline how the first neurone communicates with the second neurone at a synapse.

The neurotransmitter e.g. Acetylcholine is excocytosed at the presynaptic membrane, the neurotransmitter diffuses across the synaptic cleft, down its concentration gradient, then attaching to complementary r...
MG
Answered by Maria G. • Biology tutor
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Guillain-Barré syndrome and multiple sclerosis both cause muscle weakness and loss of muscle function. Suggest and describe how the function of neuromuscular junctions will be affected by Guillain-Barré syndrome and multiple sclerosis.

As both disorders reduce the speed at which nerve impulses are conducted, there will be fewer action potentials conducted at the neuromuscular junction (NMJ). With fewer action potentials reaching the NMJ, l...
HS
Answered by Hibba S. • Biology tutor
9899 Views

Explain why podocytes are usually unable to undergo mitosis.

The podocytes are arrested at G 0 of the cell cycle . If podocytes frequently underwent mitosis, it would alter the number and therefore the size of the fenestrations on the Bowman’s capsule, changing the ul...
HS
Answered by Hibba S. • Biology tutor
15024 Views

What are stable ecosystems? Can you give an example?

A stable ecosystem is where the outputs (losses of the ecosystem) equal the inputs (gains) - there is a balance. They are supported by what they produce, and their structure and function remain constant for ...
SA
Answered by Samhitha A. • Biology tutor
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