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How does the process of blood clotting occur?

The function of a blood clot is to prevent blood loss from damaged blood vessels. In order for a blood clot to form, activated platelets and the damaged tissue release clotting factors which are proteins in ...
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Answered by Anna C. • Biology tutor
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Describe what happens at a chemical synapse

As the action potenial reaches the synaptic terminal depolarisation causes voltage-gated Ca 2+ channels to open. The opening of these ion channels causes an influx of Ca 2+ ions because of the high concentra...
JD
Answered by Joel D. • Biology tutor
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What's the difference between the cell wall and cell membrane?

Cell wall: Only present in plant cells, it provides structure and is completely permeable to biological molecules. Cell membrane: Much thinner than cell wall and is present in all cells. It is selectively pe...
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Answered by Joel D. • Biology tutor
8023 Views

In genetics, what does co-dominance mean?

Dominant alleles need the presence of only one copy to achieve expression. Recessive alleles need two copies to achieve expression. In Co-Dominance, both alleles are expressed at the same time. <o:p>&l...
MT
Answered by Michael T. • Biology tutor
5765 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 too low: Capillaries constrict, re...
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Answered by Merrin W. • Biology tutor
4787 Views