Final answer:
Liver cells contain an exceptionally high number of peroxisomes, as these organelles are integral to detoxifying substances and breaking down fatty and amino acids.
Step-by-step explanation:
The organs/types of cells that have high numbers of peroxisomes are predominantly found in the liver cells. Peroxisomes are vital for oxidation reactions that break down fatty acids and amino acids and for the detoxification of various poisons, such as alcohol, that may enter the body. The liver, being the primary organ for detoxification, contains a notably high concentration of peroxisomes to handle these tasks. Moreover, peroxisomes have a crucial role in metabolizing the toxic hydrogen peroxide (H₂O₂) produced during oxidation reactions into water and oxygen, thereby neutralizing potentially harmful toxins.