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Science Test US3

Cell Wall outer layer rigid, strong, stiff made of cellulose support (grow tall) protection allows H2O, O2, CO2 to pass into and out of cell
Cell Membrane plant - inside cell wall animal - outer layer; cholesterol selectively permeable support protection controls movement of materials in/out of cell barrier between cell and its environment maintains homeostasis
Nucleolus Spherical shape Visible when cell is not dividing Contains RNA for protein manufacture
Cytoplasm clear, thick, jellylike material and organelles found inside cell membrane supports /protects cell organelles
Endoplasmic reticulum (E.R.) network of tubes or membranes carries materials through cell
Ribosomes small bodies free or attached to E.R. produces proteins
Mitochondria bean-shaped with inner membranes breaks down sugar molecules into energy
Vacuole fluid-filled sacs store food, water, waste (plants need to store large amounts of food)
Lysosomes small, round, with a membrane breaks down larger food molecules into smaller molecules digests old cell parts
Chloroplast green, oval usually containing chlorophyll (green pigment) uses energy from sun to make food for the plant (photosynthesis)
Nucleus large, oval controls cell activities
Chromosome carries the genetic material
Golgi Apparatus process and package proteins and lipids
Plasma Membrane encloses their contents and serves as a semi-porous barrier to the outside environment
Microtubules conveyer belts inside the cells they move vesicles, granules, organelles like mitochondria, and chromosomes via special attachment proteins
Plastid are the site of manufacture and storage of important chemical compounds used by the cell
Centriole organize the assembly of microtubules during cell division a ring of nine microtubule "triplets" are arranged at right angles to one another
Centrosome serves as the main microtubule organizing center
All living this: Use energy, develop and grow, maintain themselves (body temperature), reproduce, and are a part of evolving populations
Created by: nibess