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DB Ch7 - Cell Parts

Parts of a Eukaryotic Cell

OrganelleDefinition
Cytoplasm material inside the cell membrane- not including the nucleus
Nuclear envelope layer of two membranes that surrounds the nucleus of a cell
Chromatin granular material visible within the nucleus; consisted of DNA tightly coiled around proteins
Chromosome threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Nucleus found only in eukaryotic cells, the structure that contains the cell's genetic material (DNA) and controls the cell's activities
Ribosome small organelle made of RNA and protein; assembles proteins
Endoplasmic reticulum Internal membrane system in cells in which lipid components of the cell membrane are assembled and some proteins are modified; twp varieties: rough and smooth
Golgi apparatus stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum
Lysosome organelle filled with enzymes needed to break down certain materials in the cell
Vacuole organelle that stores materials such as water, salts, proteins, and carbohydrates
Mitochondrion organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use
Chloroplast organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
Cytoskeleton A network of proteins filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement
Centriole one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; important during cell division
Cell membrane thin, flexible barrier around a cell; regulates what enters and leaves the cell
Cell wall strong supporting layer around the cell membrane in plants, algae, and some bacteria; provides support and protection; made of cellulose
Created by: ayemme
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