Chapter 3
Question 28-Compare the functions of lysosomes and peroxisomes.

1)Lysosomes-This organelle contains digestive enyzems. They have a lot of phagocytes, which are cells that get rid of bacteria that is trying to invade and cell debris. Their main functions are to digest the particles taken in by endcytosis, particularly ingested bacteria toxins and viruses. Also to degrade the cells/organelles that are worn out or not working, as well as performing metabolic functions like glycogen breakdown and release. They also breakdown tissues that aren't useful, like the webs between the fingers and toes of a fetus that is developing. Lastly they breakdown bone to release calcium ions into the blood.

2)Peroxisomes-They have enzymes in their membrane sacs, which are mostly oxidases and catalases. Their job is to uses the oxidases to detoxify harmful substances, like alcohol and formaldehyde. Most importantly, their job is to neutralize free radicals, which are dangerous and highly reactive chemicals with unpaired electrons that can scramble the structure of the biological molecules. The oxidases convert the free radicals to hydrogen peroxide, but then quickly converted to water by the catalase enzymes.