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Biology
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How does the structure of the red blood cell allow it to carry out its functions?

The main function of the red blood cell is transport oxygen around the body to other cells. It contains haemaglobin which allows the binding of oxygen. Its biconcave shape maximises the surface area t...

NI
Answered by Narumi I. • Biology tutor
85739 Views

How does an action potential cause contraction in skeletal muscle?

The point at which a motor neurone synapses with a muscle fibre is called the neuromuscular junction. The unmyelinated nerve fibre stops around 30 nanometers before the muscle fibre, leaving a gap cal...

OM
Answered by Orla M. • Biology tutor
11556 Views

Explain the structure of a Protein and how this can relate to its function.

A protein is a polymer made up of 20 possible amino acid monomers. The amino acid monomers are made up of three components:

 

1)

ED
Answered by Emma D. • Biology tutor
64969 Views

What is the Endosymbiosis Theory?

 

Lynn Margulis proposed this theory in 1996. It explains how the eukaryotic cells engulfed through  endophagocytosis some organelles such as mitochondria and chloroplasts, which evolved from ...

IG
Answered by Ingrid G. • Biology tutor
5959 Views

Discuss the relative importance of genetic and cultural evolution in the recent evolution of humans.

 

·      Changes in genotype (genetic evolution via natural selection) have lead to cultural evolution in humans by promoting intelligent behaviour

·      L...

ZK
4985 Views

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