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Biology
GCSE

What are two ways which the body cools itself down when too hot?

Vaso-dilation: blood vessels near to the skin's surface dilate which allows more heat to be lost. This is because more blood can flow through as there is more room in the lumen.

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Answered by Hannah P. Biology tutor
13317 Views

What is the oxygen-haemoglobin dissociation curve?

The oxygen-haemoglobin dissociation curve is a graph that compares the % of haemoglobin saturated with oxygen on the y-axis to the partial pressure of oxygen in the blood on the x-axis (mmHg). It is a...

Answered by Hugh R. Biology tutor
21566 Views

What are the different stages of mitosis?

Mitosis is a type of cell division that results in genetically identical daughter cells and occurrs in many parts of the body helping with repair and replacement of cells. It is also used in asexual r...

Answered by Olivia P. Biology tutor
9483 Views

What is the difference between mitosis and meiosis?

Mitosis is the cell division that produces 2 daughter cells with genetically identicle DNA to the parent cell. These are none as diploid cells.

Meiosis requires two stages of cell division to ...

Answered by Zartasht (Tashi) C. Biology tutor
4818 Views

Describe how blood vessels are able to assist in the control of body temperature.

If body temperature is too high:

Capillaries dilate, increasing the blood supply to the skin and allowing heat to be lost from the body by radiation.

 

If body temperature is t...

Answered by Merrin W. Biology tutor
3642 Views

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