Radience

Cell Structure and Function

Science

active transport

the movement of materials through the cell membrane using energy
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cell

the basic unit of life
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cell membrane

the cell boundary that controls what enters and leaves the cell
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cell theory

cells make up all organisms, are the basic units of life, and come from other cells
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cell wall

the rigid structure around a plant cell that supports and protects it
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centriole

cell organelles made of microtubules
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chloroplast

the plant organelle that uses light energy to make food
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cytoplasm

a jellylike material in a cell
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cytoskeleton

the protein network that controls the cells shape and movement
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diffusion

the movement of molecules from an area of higher density to an area of lower density
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endocytosis

a cell taking in a substance by surrounding it with its cell membrane
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endoplasmic reticulum

the membranes in a cells cytoplasm that move proteins
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eukaryote

a cell that has a membrane and a nucleus
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exocytosis

the process by which a cell removes materials through its vesicle
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facilitated diffusion

the transport of materials across the cell membrane by transport proteins
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flagellum

a long, tail-like structure that helps a cell to move
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fluid mosaic model

a model of the cell membrane showing molecules in constant motion
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golgi body

the cell structure that packages materials for transport within and out of cell
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hypertonic solution

a solution with a higher solute concentration than that of cells in that solution
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hypotonic solution

a solution with a lower solute concentration than that of cells in that solution
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isotonic solution

a solution with the same solute concentration as the cells it contains
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lysosome

a cell organelle that contains digestive enzymes
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mitochondrion

the cell organelle that releases energy from food molecules
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nucleolus

the organelle that produces ribosomes in eukaryotic cells, it is inside the nucleus
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nucleus cell

the control center of a cell
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organelle

a structure in a cell, specialized to perform a specific function
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osmosis

the diffusion of water through a semipermeable membrane
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passive transport

the movement of materials through a cell membrane without the use of energy
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phospholipid

a lipid that contains phosphorus, it makes up cell membranes
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phospholipid bilayer

a double-layered sheet of phospholipids that makes up a cell membrane
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prokaryote

a cell without a nucleus and other organelles, like bacteria
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ribosome

a small cell structure that builds proteins
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selective permeability

the ability of cell membranes to allow some, but not all, substances to pass through
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tissue

a group of similar cells working together to perform the same function
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vacuole

the cell organelle that stores materials
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