Every cell has four main parts: These parts can be seen in above picture of a plant cell. Animal cells and plant cells are similar in many ways because both are eukaryotic cells, meaning they have a nucleus and organelles ...

What is the wavelength of the light? Wavelength in physics is how far a wave goes before it starts to repeat its shape, like the distance from one wave peak to the next. We use the symbol λ (lambda) for ...