Cell Organelles Flashcards
What does the cell membrane do
Allows substances to enter and exit the cell
What is the plasma (cell) membrane
The selectively permeable barrier on the outside of the cell
How does the cell membrane select which substances can enter and exit the cell
The substances are selected based on their size and polarity
What is the Cato plasm
It the the fluid on the inside of the cell membrane that all of the cell contents are suspended in
What is the nucleus
It is the control center of the cell
What does the nucleus do
It houses and protects the DNA in the cell
Where is the nucleolus
In the nucleus
What does the nucleolus do
It makes ribosomes
What is the nuclear envelope
The barrier around the nucleus
What does the nuclear envelope do
Protects the nucleus and has small holes that allow substances to enter and leave the nucleus
What are chromosomes
Structures in the nucleus of a dividing cell
What are chromosomes made of
DNA & protein
What do ribosomes do
Make protein
What is the mitochondria
The power house of the cell
What does the Mitochondria do
It is the cite of cell energy (ATP) production and it has its own DNA
What is the ER
Tubes in the cell that transport cellular substances
What is the smooth ER
ER without ribosomes
What does the smooth ER do
It builds lipids and detoxifies drugs and poisons in the liver
What kind of lipids does the smooth ER make
Testosterone & Estrogen
Where does the smooth ER build lipids
In the ovaries and testes
What is the rough ER
ER studded with ribosomes
What does the rough ER do
It makes parks of the cell membrane & proteins
Where is the rough ER
it is found in cells that produce posts of enzymes and proteins (example: pancreas)
What is the Golgi Apparatus
Receives newly made proteins and lipids and exports them out of the cell after modifying them
