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Cells
Cells Vocabulary for 7th grade life science students.
21
Biology
Not Applicable
08/11/2022

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Term
Cell
Definition
The basic building blocks of living things
Term
Organelle
Definition
The parts of a cell. Each one has a specific function
Term
Cell membrane
Definition
A thin, flexible barrier around the outside of all cells. This organelle controls what enters and leaves the cell (selective permeability).
Term
Cell Wall
Definition
A thick protective layer around the outside of plant cells. This organelle gives plant cells a stiff and rigid shape.
Term
Cytoplasm
Definition
The liquid that fills the inside of cells.
Term
Nucleus
Definition
The control center of cells. Contains the DNA of the cell (in eukaryotic cells)
Term
Chloroplast
Definition
The organelle that absorbs sunlight and turns it into sugar (photosynthesis)
Term
Mitochondria
Definition
The organelle that converts sugar into ATP energy.
Term
Ribosome
Definition
This organelle creates proteins for the cell.
Term
Vacuole
Definition
The organelle that stores extra water, vitamins, and other materials.
Term
Lysosome
Definition
The organelle that removes waste from the cell.
Term
Prokaryotic
Definition
Cells that do not have a nucleus.
Term
Eukaryotic
Definition
Cells with a nucleus.
Term
Unicellular
Definition
Organisms made up of only one cell.
Term
Multicellular
Definition
Organisms made up of more than one cell.
Term
Tissue
Definition
A group of cells working together to perform a specific function.
Term
Organ
Definition
A group of tissue working together to perform a specific function.
Term
Organ System
Definition
A group of organs working together to perform a specific function.
Term
Regulate
Definition
To control something.
Term
ATP energy
Definition
The type of energy that living things need. Produced in the mitochondria by combining sugar and oxygen.
Term
Selective Permeability
Definition
Choosing what enters or leaves.
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