Term | Definition |
Cell Theory | All living things are made of cells; cells are the basic unit of structure and function of living organisms; cells come from other cells. |
Cell Wall | Plant cells only, provides support for the cell and plant |
Cell Membrane | Regulates materials entering and exiting the cell |
Nucleus | "Control center"; regulates DNA and RNA actions |
Mitochondira | Produces energy of the cell; site of cellular respiration; "the powerhouse of the cell" |
Vacuoles | Storage for water, nutrients, and waste |
Lysosomes | Packets of enzymes that break down materials in a cell |
Ribosomes | Makes proteins |
Golgi Bodies | Packages, labels, and ships proteins out of the cell |
ER | Transportation route for proteins |
Smooth ER | No ribosomes |
Rough ER | Has ribosomes |
Chloroplasts | Plants only - the site of photosynthesis |
Photosynthesis | The conversion of sun and CO2 into sugar |
Chromosomes | Organized DNA, present before cell division |
Chromatin | Unorganized DNA |
What is the difference between plant and animal cells? | Plant cells contain chloroplasts and cell walls, animal cells do not. |
Osmosis | Diffusion of water molecules across a selectively permeable membrane |
Passive transport | Diffusion of a substance across a biological membrane |
Active transport | Requires that a cell expends energy to move molecules across a membrane |