Bio quiz 1

which form of tranport expends energy

active transport
define osmosis

the diffusion of water across a selectivel permeable membrane
Chloroplast
- make energy and sugar from sunlight
- (plants only)
Vacuoles

Tranportation in cell
Lysosomes

Get rid of waste
Nucleolus

Ribosome production
Golgi apparatus

finishes, labels, and ships protiens
The rough ER

Helps complete protiens
the smooth ER

makes membranes
The nucleus...
(3 things)
- 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?

membrane carbohydrates
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?

Vesicles
Cytoplasm is...

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

Author

atoms1

33322

Card Set

Bio quiz 1

Description

Cell organelles, membranes, diffusion, osmosis

Updated

2010-09-08T02:03:34Z