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Section 3.1

The Cellular Level of Organization

QuestionAnswer
Organelles Small, often membranous structure in the cytoplasm having a specific structure and function
Cell theory all organisms are composed of one or more cells, cells are the basic living unit of structure adn function in organisms, all cells come only from other cells
Plasma Membrane Membrane surrounding the cytoplasm that consists of a phospholipid bilayer with embedded proteins; regulates the entrance and exit of molecules from the cell.
Cytoplasm contents of a cell between the nucleus and the plasma membrant that contains the organelles.
Prokaryotic Cells lack a membrane-bounded nucleus
Cell wall structure that surrounds a plant, protistan, fungal, or bacterial cell and maintains the cell's shape and rigidty.
Capsule/Slime layer gelatinous layer surrounding the cells of blue-green algea and certain bacteria
Flagellum long, slender extension used for locomotion by some bacteria, protozoans, and sperm.
Fimbriae short appendages that help them attach to an appropriate surface
Nucleoid region of prokaryotic cells where DNA is located; is not bounded by a nuclear envelope
Plasmids small accessory rings of DNA
Ribosomes RNA and protein in two subunits; site of protein sythesis in the cytoplasm
thylakoids Flattened sac within a granum whose membrane contains chlorophyll and where the light-dependent reactions of photosynthesis occur
Created by: kperks
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