1. Cell membrane / a. Contain chlorophyll I 2. Cell wall r b. Jellylike liquid inside cells 3. Cellulose c. Carry "blueprints" for new cells 4. Chloroplasts d. Directs most cell activities 5. Chlorophyll e. Stores food and water for the cell 6. Chromosomes f. Holds animal cells together 7. Cytoplasm g. Stiff material in cell walls h. Chemical that helps plants 8. Nucleus ,.., make food 9·~ Vacuole i. Stiff structure around plant cells

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.