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Binding the first oxygen molecule leads to a change in the tertiary structure of haemoglobinThis uncovers the second haem binding site for another oxygen molecule to atta...
You gently heat the mixture and add 2-3 drops of Benedict's solution.If glucose is present, the solution will turn from blue to orange.
When the action potential reaches the presynaptic knob, it causes calcium ion protein channels to open and calcium ions enter the presynaptic knob by facilitated ...
Diffusion is the movement of a substance from areas of high concentration to areas of low concentration, down a concentration gradient. As a result of diffusion, substances may move in and out of cells, a...
The xylem and phloem are both tissues for the transportation of substances, required for normal functioning by plants. They differ in what substances they transport and how these are transported, however....
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