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BMMS Life Sci Chpt 3

structure and function of cells

organ system a group of organs that work together to perform a major function.
cell the basic unit of structure and function in living things.
multicelluar composed of many cells.
organ made of different kinds of tissue that work together.
cell theory a widely accepted explanation of the relationship between cells and living things.
nucleus the cell's control center
organelles small structures that carry out specific functions within the cell.
cell membrane controls what substances come into and out of the cell.
mitochondria rod-shaped structures that convert energy in food molecules to energy the cell can use.
cell wall a rigid layer of nonliving material that helps protect and support plant cells.
ribosomes small, grain like bodies that function as factories to produce proteins.
vacuole large, water-filled sacs that are storage area of cells.
chloroplast captures energy from sunlight and uses it to produce food.
endoplasmic reticulum helps form proteins and other materials, and also carries materials throughout the cell.
cytoplasm the material within a cell apart from the nucleus.
cytoskeleton a protein "framework" inside a cell that gives the cell a shape.
Golgi body a structure in a cell that receives proteins and other newly formed materials from the ER, packages them, and distributes them to other parts of the cell.
lysosome a small, round cell structure containing chemicals that break down large food particles into smaller ones.
tissue A group of similar cells that perform the same function.
unicellular made of a single cell.
Created by: tsheldon