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Cell Theory & Parts
Seminole County Fl Biology
| Term | Definition |
|---|---|
| scanning electron microscope | uses electrons to produce two dimensional images |
| ribosomes | cell organelle consisting of RNA and protein found throughout the cytoplasm in a cell; the site of protein synthesis |
| cilia | short hair-like projection that produces movement |
| vacuoles | cell organelle that stores materials such as water, salts, protein, and carbohydrates |
| cells | basic unit of all forms of life |
| mitosis | part of eukaryotic cell division during which the cell nucleus divides |
| flagella | structure used by protists for movement; produces movement in a wavelike motion |
| endoplasmic reticulum | internal membrane system found in eukaryotic cells; place where lipid components of the cell membrane are assembled |
| cytoplasm | in eukaryotic cells, all cellular contents outside the nucleus; in prokaryotic cells, all of the cells' contents |
| light microscope | allows light to pass through a specimen and uses two lenses to form an image |
| transmission electron microscope | use electrons to produce three dimensional images |
| chromatin | substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones |
| golgi apparatus | organelle in cells that modifies, sorts, and packages proteins and other material from the endoplasmic reticulum for storage in the cell or release outside the cell |
| nucleus | the structure that contains the cell's genetic material in the form of DNA |
| plasmid | small, circular piece of DNA located in the cytoplasm of many bacteria |
| chloroplasts | organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy |
| chromosomes | threadlike structure of DNA and protein that contains genetic information; in eukaryotes, chromosomes are found in the nucleus; in prokaryotes, they are found in the cytoplasm |
| centriole | structure in an animal cell that helps to organize cell division |
| cytoskeleton | network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement |
| nucleolus | a rounded body within the nucleus of a cell |
| nuclear envelope | the double membrane surrounding the nucleus within a cell |
| lysosomes | cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell |
| cell membrane | thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell |
| mitochondria | cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use |
Created by:
crystalhawes
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