| A | B |
|---|
| animal cell | does not contain a cell wall |
| cells | all living things are made of these |
| van leeuwenhoek | first described living cells |
| eukaryote | cell containing a nucleus |
| selective permeability | controls what in the cells environment could enter the cell |
| mitochondria | muscle cells have more of these because they need more energy |
| plasma membrane | structure most responsible for maintaining cell homeostasis |
| schleiden | concluded that all plants are made up of cells |
| bacterial cells | cell that has no nucleus |
| nucleus | control center of the cell |
| golgi body | sorts, packages and transport |
| hypotonic | water moves into a cell placed in this solution |
| osmosis | when a cell is placed in salt water, water leaves the cell by this process |
| endocytosis | this is not a form of passive transport |
| phospholipid bilayer | a plasma membrane is made up of this |
| lysosomes | cell structure that contains digestive enzymes |
| ribosomes | site of protein synthesis |
| organelles | small, membrane-bound structures inside a cell |
| prokaryote | organism with a cell that lacks a true nucleus |
| mitochondria | breakdown of molecules in order to produce energy |
| cilia | short hairlike projections used for locomotion |
| chloroplasts | in plants, the structure that transform light energy into chemial energy |
| cytoskeleton | network of tiny rods and filaments that forms a framework for the cell |
| vacuole | storage space for food, water, or waste |
| endoplasmic reticulum | system of connected membranes that is site of chemical reactions |
| nucleus | contains all of the DNA that is responsible for appearance |
| cell wall | rigid support structure outside the plasma membrane in plant cells |
| osmosis | diffusion of water |
| endocytosis | cell engulfs material and releases the content INTO the cell |
| isotonic | concentration in the solution is EQUAL to solution in the cell |
| selectively permeable | maintains homeostasis by allowing some molecules in while keeping others out |
| exocytosis | active transport where materials are secreted or expelled out of the cell |
| hypotonic | solution outside the cell is less concentrated than inside the cell |
| passive transport | movement across a cell membrane with no energy |
| hypertonic | solution outside the cell is greater than inside the cell |
| active transport | cells transport materials against a concentration gradient |
