17 terms

7th Grade Science: Cells - organelles

Organelles are the cell's "organs". They are found in Eukaryotic cells. Nuclei have two membrances and communicates with the cytosol with their numerous nuclear pores. DNA is found in the nucleus, in the chromosomes. RNA is also here. Nucleolus: Inside the nucleus, the nucleolus produces ribosome. Cytosol: Liquid matter found in cells where the organelles float in it. A lot of cell digestion. Cytosol is full of proteins that control metabolism.
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Organelle
This is a tiny structure within a cell that acts like organs in our own bodies to carry out a specific task for the cell
Cell Membrane
Thin, flexible barrier around a cell; regulates what enters and leaves the cell
Nucleus
Contains DNA and is the control center of the cell
Nucleolus
This area inside the nucleus produces ribosomes
Cytoplasm
This is the fluid inside a cell in which the organelles are suspended
Endoplasmic Reticulum
Folded layers that begin at nucleus and stretch out into the cytoplasm. This is the highway of the cell. It transports proteins and other cell products.
Ribosome
the small round organelle with the job of putting amino acids together to make proteins. They are found in great number on the ER and may be scattered throughout the cell
Golgi Apparatus/Golgi Bodies
Pancake shaped organelles that packages proteins for export from the cell
Mitochondria
Powerhouse for the cell. It is bean shaped and is the site of ATP (energy) production.
Vacuole
Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
Lysosome
Cell organelle filled with enzymes needed to break down certain materials in the cell. These are mostly found in animal cells.
Chloroplast
an organelle found in plant and algae cells where photosynthesis occurs
Cell Wall
This is a rigid outer layer that protects and supports a cell. Plant and Algae versions are made of cellulose, while Fungi amd Bacteria make theirs from other materials.
Centrioles
microtubule organizing center (used during cell division)
chromatin
Name for the shape of DNA found inside the nucleus
Smooth ER
type of endoplasmic reticulum that has no ribosomes and is a site for protein activity and transport within the cell
Rough ER
type of endoplasmic reticulum with ribosomes that is a site for protein manufacture and transport within the cell
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