Over a million students use our free study notes to help them with their homework
The muscle of the right ventricle contracts. This forces the {right atrio-ventricular/tricuspid} valve to close and the {right semi-lunar/pulmonary} valve to open. The blood is pumped through the pulmonar...
The P wave is caused by the contraction of the atria, forcing the blood into the ventricles. The sinoatrial node, produces a wave of depolarisation which causes the atria to contact and therefore the p w...
There are 3 factors that can influence the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature. Light intensity influences photosynthesis as light is required during the ...
Prokaryotic and eukaryotic cells are the 2 types of cells that exist on Earth.Prokaryotes are single celled organisms that lack a distinct nucleus with a membrane. Their DNA is supercoiled and free floati...
A non competitive enzyme binds to the enzyme but not at the active site. This creates an enzyme inhibitor complex. The binding of the inhibitor to the enzyme influences the chemical bonds (for example hyd...
←
153
154
155
156
157
→
Internet Safety
Payment Security
Cyber
Essentials
