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Cell Theory & Parts

Seminole County Fl Biology

TermDefinition
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