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Describe the key feature of stem cells and discuss their applications in research and medicine. Please provide examples.

Stem cells are undifferentiated cells with the ability to differentiate to form specialised cells, such as erythrocytes and neurons, or to self-renew in order to repopulate and produce more stem cells. Their...
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Answered by Tabitha M. • Biology tutor
2876 Views

How does homeostasis in humans serve to regulate blood water potential?

The water potential of the blood is constantly monitored by specialised sensory neurones in the hypothalamus known as osmoreceptors. When these cells detect that the water potential of the blood is beginning...
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Answered by Jonathan M. • Biology tutor
5122 Views

What is the purpose of mitosis and explain the stages

Mitosis is used for growth, repair and replacement of tissue or in the case of asexual organisms - reproduction. It results in the formation of daughter cells which are genetically identical to the original ...
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Answered by Rebecca H. • Biology tutor
11566 Views

Explain why blood transfusion from a recently recovered Ebola patient may be an effective treatment ? (3 marks)

Importantly the question has 3 marks which means 3 clearly developed points must be made: The question wants us to think about ebola and its method of infection, the individual who has been infected and reco...
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Answered by Ahmed E. • Biology tutor
5241 Views

Describe the processes of obtaining desired genes and their subsequent transfer into the cells of organisms.

In answering this question, it is important that the student outlines the steps and tools involved in the process (for learning purposes it is easier to learn the numerical steps, however, it is important th...
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Answered by Niamh G. • Biology tutor
4265 Views