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Biology
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Describe the role of the myelin sheath surrounding the axon

It is important to remember that the myelin sheath is essential for our nervous system.It forms a layers of fatty material around the axon. This allows INSULATION, which, in turn, allows quicker conductio...

OD
Answered by Ozbil D. • Biology tutor
9538 Views

What are the key principles of evolution?

Variation: there is variation in the physical and behavioural characteristics of a set of organisms. This variation is caused by a combination of genetic and environmental factors.

IS
Answered by Ivan S. • Biology tutor
5342 Views

What is the difference between a eukaryote and a prokaryote?

Generally a prokaryote is smaller, reaching roughly up to 5μm while eukaryotes are larger reaching roughly up to 100μm.

Eukaryotes have 80s ribosomes but prokaryotes have 70s ribosomes. <...

NH
Answered by Nadia H. • Biology tutor
3607 Views

Which muscles in the gut wall are involved in peristalsis?

Circular muscles -  reduce the diameter of the gut when they contract

Longitudinal muscles - which reduce the length of the gut when they contract

The muscles work together ...

YC
4070 Views

Where is water absorbed in the digestive system? - Duodenum, Ileum or colon?

The answer is the colon (large intestine)

 The Duodenum is where food is mixed with digestive enzymes and bile. In the ileum, digested food is absorbed into the blood and lymph. Therefore...

YC
37906 Views

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