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Transcript of The Cell
*Every living thing is made of cells.
Unicellular organisms-only one cell
Multicellular organisms-made of many cells
*Cells are the basic units of structure and function in living things.
*All cells are produced from other cells.
There are two groups of cells—
*prokaryotic cells-have no nucleus
*eukaryotic cells-have a nucleus and organelles are surrounded by a membrane
A nucleus is where the genetic information (DNA or RNA) is stored.
Organelles of eukaryotic cells:
Cell Wall: Tough outer layer for structure and support of the cell (Not in animal cells)
Cell Membrane: Controls what enters/leaves the cell
Nucleus: Has three main parts;
-a membrane around the nucleus
-the genetic material (DNA or RNA)
Mitochondria: Turns food molecules (from eating or photosynthesis) into energy molecules (ATP)
Endoplasmic Reticulum: Carries materials through the cell in passageways and assists in making molecules such as proteins and lipids
Rough ER has ribosomes attached, smooth ER does not.
Ribosomes: Make proteins
Golgi (Body) Apparatus: Modifies proteins and packages them to travel through the cell.
Chloroplast: Turns sunlight into food (glucose) molecules for the cell (Not in animal or fungus cells)
Vacuole: Stores water, food, and sometimes wastes for the cell (plant cells have one large vacuole and animal cells have many small vacuoles)
Lysosome: Sacs of enzymes that break down molecules in the cell so that they can be useful