| A | B |
| microtubules | a hollow tube of protein, that constitutes the largest strand in to cytoskeleton |
| flagella | a hairlike structure made up of microtubules that function in locomotion-less numerous-longer |
| cytosol | the gelatin like aqueous fluid that bathes the organelles on the inside of the cell membrane |
| cilia | a short, hairlike organelle that extends from a cell and functions in the movement of substances across a surface-more numerous;smaller;shorter |
| Cell Theory | 1. Cells are the structural,functional, and reproductive units of life 2. all organisms are composed of cells 3. cells come from preexistin cells |
| Organ | a group of tissues workin together to do one job |
| Colonial Organism | a collection of genetically identical cells that live together in a closely connected group |
| Nuclear Pore | A small hole in the nuclear envelope through which substances pass between the nucleus and the cytoplasm |
| Eukaryote | a cell that contains a nucleus and mebrane bound organelles |
| Thylakoid | a flattened, membranous sac inside a chloroplast, contains most of the components involved in the light reactions of photosynthesis |
| Spindle Fiber | one of the microtubules that extend across a dividing eukaryote cell; assists in the movement of chromosomes |
| Prokaryote | a unicellular organism that lacks a nucleus and membrane bound organelles |
| Actin | one of the 2 protein filaments in a muscle cell that function in contraction |
| cytoskeleton | a network of long protein strands in the cytosol that helps maintain the shape and size of the eukaryotic cell |
| Microfilament | a polymer chain of the protein actin;the smallest strand in the cytoskeleton |
| Peripheral Protein | a protein attached to the interior or exterior surface of the cell membrane |
| Fluid Mosaic Model | a model of cell membrane structure representin the dynamic nature of membrane lipids and proteins |
| Plastid | an organelle of plant cells that contains starch, fats, or pigments |
| Nuclear Membrane | the nuclear skeleton, shape maintaining protein |
| Tissue | groups of cells working together to do one job |
| Organ System | a group of organs that interact to perform a set of related tasks |
| Integral Protein | a protein imbedded in a bilayer of the cell membrane |