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Cells
Definitions and terms for basic information about cells.
23
Biology
Beginner
10/22/2015

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Term
Endoplasmic Reticulum (ER)
Definition
a maze of roadways which ship things to deliver materials inside the cell
Term
Five Parts of the Organization of Living Things
Definition
Cell
Tissue
Organ
Organ System
Organism
Term
Golgi bodies
Definition
package, modify, and ship things to different locations in and out of the cell
Term
Three Parts of Cell Theory
Definition
1. All living things are composed of cells.
2. Cells are the basic unit of structure and function.
3. Cells are produced from other cells.
Term
cell membrane
Definition
protects the cell; keeps the cell the same shape and size; controls what goes in the cell
Term
cell wall
Definition
found only on a plant cell; the rough outer layer of the cell
Term
chloroplasts
Definition
found only in a plant cell; takes energy from the cell to use for photosynthesis
Term
compound
Definition
when two or elements combine chemically
Term
cytoplasm
Definition
jelly-like substance found inside the cell
Term
diffusion
Definition
the movement of small molecules through a small membrane
Term
element
Definition
something that cannot be broken down into a simpler substance.
Term
higher concentration
Definition
more of something
Term
impermeable
Definition
nothing can pass through
Term
lower concentration
Definition
less of something
Term
lysosomes
Definition
breaks down food into particles that the rest of the cell can use (digest)
Term
mitochondria
Definition
the powerhouses of the cell; breaks down food to make ATP through respiration
Term
nuclear membrane
Definition
controls what enters or leaves the nucleus
Term
nucleus
Definition
controls all of the cell's activity
Term
osmosis
Definition
the movement of something through selectively permeable membrane
Term
permeable
Definition
things can pass through
Term
ribosomes
Definition
make and store all the protein in a cell
Term
selectively permeable
Definition
only certain things can pass through
Term
vacuoles
Definition
store waste, water, and food in the cell
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