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24 Cards in this Set

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Compound Microscope
A type of microscope that increases magnification by using more than one lens
Cell
The smallest unit of living matter that can perform life functions
Cell Theory
What most scientists consider to be generally true about cells such as the idea that cells are the basic unit of structure and function
Unicellular Organisms
Organisms that are made up of only one cell
Multicellular Organisms
Organisms that are made up of more than one cell
Flagellum
A long, whip like structure that propels a cell through water
Cilia
Short hairlike parts on the surface of a cell
Psuedopod
An extension of the inside fluid of the cell that allows for the movement of some unicellular organisms
Cell Membrane
The very thin covering that surrounds a cell
Cytoplasm
A gel-like substance inside the cell membrane
Nucleus
A structure that has a membrane around it and directs the activities of a cell
Eukaryotic Cells
Cells with a nucleus
Prokaryotic cells
Cells that do not have a nucleus
Organelles
Structures within the cytoplasm of a eukaryotic cell
Vacuoles
An area in a cell that stores food, water, and other materials a cell may need
Mitochondria
An organelle in which energy is released from the cell's food (power plant for cells)
Cell Wall
A rigid structure outside the cell membrane that supports and protects the plant cell
Chloroplasts
Small, oval or disk-shaped structures that contain chlorophyll
Energy
The ability to make things happen, to cause change, or to do work
Diffusion
The movement of particles from where they are more concentrated to where they are less concentrated
Osmosis
The diffusion of water through a membrane
Active Transport
The movement of materials by living cells from areas of lower concentration to areas of higher concentration
Respiration
The process by which cells release energy from food
Photosythesis
The process by which green plants use energy from light to produce food