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16 organelles

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louisa weitz

on 19 November 2013

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Transcript of 16 organelles

16 Organelles
"Control Center" of the cell.
"Contains the cell's DNA (genetic information) in the form of genes.
Rough Endoplasmic Reticulum
Consists of many interconnected membranous sacs called cisternae, onto whose external surface ribosomes are attached (distinguishing RER from SER on electron micrographs).
Smooth Endoplasmic Reticulum
Consists of many interconnected membranous sacs called cisternae (without ribosomes).
Many enzymes are either attached to the surface of the SER or located within its cisternae.
Golgi Apparatus
The Golgi apparatus modifies, sorts and packages macromolecules for delivery to other organelles or secretion from the cell
Lysosomes (tiny sacs containing enzymes) are the main sites of intracellular digestion. They enable the cell to make use of nutrients.
Ribosomes interpret cellular information from the nucleus and synthesize proteins.

The main function of mitochondria in aerobic cells is the production of energy by synthesis of ATP. However, mitochondria also have many other functions.
(plant cells only)

Chloroplasts are the sites of photosynthesis within plant cells.
Cell Membrane
2 thin layers made of lipids and proteins
Membrane surrounds the cell
Functions as a GATE
The gel like substance that fills a cell and is mostly made of water
Facilitate either movement of the cell or movement of something over the surface of cells
The main function of the flagellum of a human spermatozoon (sperm cell) is to enable the sperm to move close to the oocyte ("egg" cell) and orient itself appropriately .
Maintains cell shape
Helps cells move
Made of protein filaments
Cell Wall
Function: STRUCTURE for plants

Nucleur Membrane
Divides the nucleus from the rest of the cell
Makes ribosomes which make protein
Found in nucleus

Stores water and other materials until needed
Only in animal cells
Made of microtubules
Part of cytoskeleton
Help in cell division
Full transcript