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Cell Struc & Func

Unit 3 Chapter 7 Cell Structure & Function

QuestionAnswer
Cells Basic units of life
Cell Theory All living things are composed of cellsCells are the basic unit of structure and function in living thingsNew cells are produced from old cells
Nucleus Large membrane-enclosed structure that contains DNA. Controls cell activity.
Eukaryotes Cells that contain nuclei
Procaryotes Cells that DO NOT contain a membrane
Organelles "little organs"
Cytoplasm Portion of cell outside nucleus
Nuclear Envelope Two membranes surrounding nucleus
Chromatin Consists of DNA bound to protein.spread out in cell
Chromosomes Condensed chromatin. threadlike structures containing DNA
Nucleolus where ribosome assembly begins.
Ribosomes Small particles of RNA and protein found throuout cytoplasm
Endoplasmic Reticulum Site where lipid components of cell membrane are assembled, along with proteins and other materials to be exported
Golgi Apparatus Modifies, sorts, and packages proteins and other for storage
Lysosomes Small organelles filled with enzymes. Clean up crew
Vacuoles Store materials
Mitochondria Convert chemical energy in food to compounds that are more convenient for cells to use
Chloroplasts Organelles that capture sun energy and perform photosynthesis
Cytoskeleton Supporting structure
Centrioles Located near nucleus to help organize cell division
Cell Membrane Thin, flexible barrier
Cell Wall Strong, supporting layer
Lipid Bilayer Composition of almost all cell membranes.
Created by: rachael94
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