Bio quiz 1
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which form of tranport expends energy
the diffusion of water across a selectivel permeable membrane
- make energy and sugar from sunlight
- (plants only)
Tranportation in cell
Get rid of waste
finishes, labels, and ships protiens
The rough ER
Helps complete protiens
the smooth ER
- 1. is the control center
- 2. stores DNA
- 3. makes messenger RNA
how do cells move LARGE molecules?
by using vacuoles and vesicles
Active transport move substances from...
regions of low concentration to high concentration, against the concentration gradient.
simple diffusion moves molecules from...
- regions of high concentration to regions of low concentration.
- (fart in a room)
what molecules play a key role in cell to cell recognition?
integral protiens areintegrated in the cell membrane and serve what purpose?
to allow transport of specific protiens through the cell membrane
Which part of the phospholipid is hydrophobic?
the fatty acid tail
Which part of the phospholipid is Hdrophilic?
the Phosphate head
What is the cell membrane made of?
A Phospholipid Bilayer
What move material around the cell?
The jell that holds organelles in place.
The cell membrane's 2 main functions are...
- 1. to seperate the cell from it's aqueous enviroment
- 2. to control what enters the cell
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