cell wall plant, not animal *outer layer
*rigid, strong, stiff
*made of cellulose
*support (grow tall)
*allows H2O, O2, CO2 to pass into and out of cell
cell membrane both plant/animal *plant - inside cell wall
*animal - outer layer; cholesterol
*selectively permeable
*controls movement of materials in/out of cell
*barrier between cell and its environment
*maintains homeostasis
nucleus both plant/animal *large, oval *controls cell activities
nuclear membrane both plant/animal *surrounds nucleus
*selectively permeable
*Controls movement of materials in/out of nucleus
cytoplasm both plant/animal *clear, thick, jellylike material and organelles found inside cell membrane *supports /protects cell organelles
reticulum (E.R.)
both plant/animal *network of tubes or membranes *carries materials through cell
ribosome both plant/animal *small bodies free or attached to E.R. *produces proteins
mitochondrion both plant/animal *bean-shaped with inner membranes *breaks down sugar molecules into energy
vacuole plant - few/large
animal - small
*fluid-filled sacs *store food, water, waste (plants need to store large amounts of food)
lysosome plant - uncommon
animal - common
*small, round, with a membrane *breaks down larger food molecules into smaller molecules
*digests old cell parts
chloroplast plant, not animal *green, oval usually containing chlorophyll (green pigment) *uses energy from sun to make food for the plant (photosynthesis)


Print this page in Adobe Acrobat format.

Visit the Utah State 7th Grade Integrated Science Core Curriculum Page.
Updated June 15, 2000 by: Glen Westbroek
Science Home Page | Curriculum Home Page | Core Home Page | USOE Home Page
Copyright by the Utah State Office of Education