Top answers

Biology
A Level

What are the similarities/differences between neuromuscular junctions and cholinergic synapses?

There are many similarities between these two structures, the main differences are: Neuromuscular junction (NMJ) is between a neurone and a muscle. A synapse is neurone-neurone.Neuromuscular junctions are...

Answered by Biology tutor
23027 Views

What are the model structures associated with enzyme action?

There are two different models theorized by scientists in order to explain the performance of enzymes that you need to know about. The first is known as the 'Lock and Key hypothesis' where in the enzyme i...

Answered by Biology tutor
2415 Views

Explain the transmission of nerve impulses across a cholinergic synapse

When an action potential arrives at the pre-synaptic neurone, it causes a change in voltage due to the presence of positive Na ions. This causes voltage-gated Ca 2+ protein channels to open and allow calc...

Answered by Kimran S. Biology tutor
3930 Views

Describe the structure and function of the cytoskeleton

An organelle found in all eukaryotic cells made of thin microfilaments of the protein actin and microtubules made of the protein tubulin. Transport is the key role where motor proteins drag organelles fro...

Answered by Sakina L. Biology tutor
7551 Views

What is the maximum resolution for a standard optical microscope?

200nm

Answered by Sakina L. Biology tutor
1957 Views

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