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 center2. stores DNA3. 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