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Biology
A Level

Which mechanisms control the homeostasis of blood sugar levels in the human body? How do these regulate the concentration of sugar in the blood?

The homeostasis of blood sugar levels in controlled via a careful balance of hormonal secretions leading to an increase of blood sugar concentation when needed. when the blood sugar concentration is too h...

HG
Answered by Harry G. • Biology tutor
3432 Views

Explain the neuromuscular junction

Action potential causes depolarisation in the presynaptic bulb, this causes voltage-gated calcium channels to open. This causes vesicles containing the neurotransmitter acetycholine to move and fuse with ...

ZO
Answered by Zahra O. • Biology tutor
8696 Views

What is a synapse and how is information passed through it?

A synapse is a receptor that detects

SS
Answered by Shay S. • Biology tutor
2877 Views

How are action potentials propagated across cholinergic synapses?

In order for action potentials to travel to their intended destination they must cross synapses. These synapses are the spaces between neurones' axon terminals 

HS
Answered by Harry S. • Biology tutor
3344 Views

What is the structure of DNA?

DNA stands for deoxyribonucleic acid and is the basic unit of the genetic material that is housed in the nucleus of eukaryotic cells.

DNA was first visualised by Watson and Crick, who described it ...

LR
Answered by Lewis R. • Biology tutor
6344 Views

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