Cellulose is found throughout the cell walls of plant cells. cellulose makes cell walls rigid, which indicates that cellulose is a a. carbohydrate b. lipid c. nucleic acid d. protein

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

What is the ecological role of food chains and food webs