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cell organelles
intro to cells
24
Biology
9th Grade
10/09/2018

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Term
cell
Definition
a membrane bound structure that is the basic unit of life.
Term
cell membrane
Definition
the lipid bi-layer that forms the outer boundary of the cells
Term
cell
Definition
a membrane bound structure that is the basic unit of life
Term
cell theory
Definition
All living things are made from cells, cells are the basic unit of life, and cells only come from other cells
Term
Cell Wall
Definition
A rigid structure that surrounds the cell if plants and most bacteria
Term
Cytoplasm
Definition
The region of the cell between the membrane and nucleus
Term
Cytoskeleton
Definition
A network of long protein strands in the cytosol that helps support the cell
Term
Eukaryote
Definition
A cell that contains a nucleus and membrane-bound organelles
Term
Golgi apparatus
Definition
A system of membranes that modifies and packages proteins for export by the cell
Term
Lysosomes
Definition
An organelle containing digestive enzymes
Term
Mitochondria
Definition
Powerhouse of the cell- Produces energy (ATP) from oxygen and sugar (cellular respiration)
Term
Nuclear Envelope
Definition
A double membrane that surrounds the nucleus in the cell
Term
Nucleolus
Definition
The organelle where ribosomes are made, synthesized, and partially assembled, located in the nucleus
Term
Nucleus
Definition
The organelle that contains DNA and controls the processes of the cell
Term
Organelle
Definition
One of several bodies with a specialized function that is suspended in the cytosol of the cell
Term
Prokaryote
Definition
A unicellular organism that lacks a nucleus and membrane bound organelles
Term
Ribosome
Definition
An organelle that functions in the synthesis of proteins
Term
Vacuole
Definition
Stores water and nutrients for the cell; very large in plant cells
Term
Vesicle
Definition
A membrane bound sac that contains materials involve in transport of the cell
Term
Endoplasmic Reticulum
Definition
An internal membrane system in which components of cell membrane and some proteins are constructed
Term
Rough ER
Definition
That portion of the endoplasmic reticulum studded with ribosomes
Term
Smooth ER
Definition
That portion of the endoplasmic reticulum that is free of ribosomes
Term
Flagella
Definition
Whip-like tails found in one-celled organisms to aid in movement
Term
Pili
Definition
Allows prokaryotes to attach to surfaces and to each other and allows them to transfer DNA
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