Outline the structure of a ribosome, a centriole and a lysosome?
Ribosome - can be free in the cytoplasm or attached to the RER. They are made up of two subunits - 1 large, 1 small.
Lysosome - spherical sac containing a digestive enzyme
Centriole - A centriole is made up of microtubules (protein fibres). There is a pair of centrioles next to the nucleus in animal cells and protoctists.