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Biology
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Explain why the blood clots and describe the process of events that causes the blood to clot.

If blood vessels are damaged, such as by a cut in the skin, blood clots to perform two functions. 1) to reduce or stop blood loss2) to prevent the entry of pathogens
This triggers a cascade of events...

Answered by Isabella C. Biology tutor
4177 Views

Can you name the similarities and differences between a animal and a plant cell?

There are many similarities between these two cells but some important differences which are specific to plant cells. Some of the shared organelles include:Cell Membrane - made of a lipid bilayer which pr...

Answered by Jasaren G. Biology tutor
2316 Views

What's the difference between diffusion and osmosis?

Osmosis is the net movement of water from an area of high water potential to low water potential through a semi-permeable membrane, while diffusion is the net movement of any liquid or gas from an area of...

Answered by Rosalind R. Biology tutor
8561 Views

Describe the course of blood through the heart and lungs, explaining how it becomes oxygenated.

Considering the heart has 4 distinct chambers - for this question it's best to start in the right atrium. (Supported by a diagram) Deoxygenated blood is returned to the right atrium from the rest of the b...

Answered by Liam R. Biology tutor
1426 Views

Why does a dominant allele mean a higher probability that offspring are affected by a disease?

To start with lets define an allele - these are different versions of the same gene. Genes are small sections of DNA which carry codes to tell your body what proteins to make. Each gene has two alleles ...

Answered by Maggie F. Biology tutor
2609 Views

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