Over a million students use our free study notes to help them with their homework
The cell membrane is made up of something called the phospholipid bilayer. This is exactly what it sounds like:a hydrophilic phosphate head on the outside and a hydrophobic lipid on the inside.
A synapse is a junction between the end of one neuron (known as the pre-synaptic neuron) and either another neuron (known as the post-synaptic neuron) or...
The respiratory system is a collection of organs working together in order to oxygenate the blood and remove the waste product carbon dioxide. The respiratory system uses a method of gaseous exchange ...
Evolution is a gradual change in the inherited traits of a population over many generations.
Natural selection is a mechanism where the members of a population best suited to their environmen...
A chamber wall's thickness is directly linked to its function. Each of the 4 chambers has a different function and so, they each have different wall thickness.
The more work a chamber has to d...
←
929
930
932
933
934
Internet Safety
Payment Security
Cyber
Essentials
