CELL REVIEW DIFFUSION 1 DIFFUSION 2 OSMOSIS ACTIVE TRANSPORT

100

Cell Membrane
What is the structure that serves as the cell's boundary from its environment?

100

PASSIVE
Diffusion is a type of __________ transport.

100

DIFFUSION
How do different types of molecule enter our cells?

100

OSMOSIS refers only to water molecules while DIFFUSION refers to all different types of molecules.
How is OSMOSIS different that DIFFUSION

100

TRUE
TRUE of FALSE: Active transport requires the use of ENERGY

200

NUCLEUS
What is the control center of the cell?

200

HIGH concentration --> LOW concentration
In DIFFUSION molecules move from _______ concentration to _______ contentration.

200

FLUID
Cells are usually surrounded by _________.

200

FALSE
TRUE or FALSE: In osmosis water molecules move from low concentrations to high concentrations.

200

ATP
What kind of energy does ACTIVE TRANSPORT require?

300

TWO
The prefix "BI" in the word BILAYER means...

300

A membrane that allows some molecules and other particles to enter and exit while blocking others
What is a selectively permeable membrane?

300

Hypotonic, Hypertonic & Isotonic
What are the three types of solutions?

300

Solute = SALT Solvent = Water
In a salt solution (made of water+salt), what is the SOLUTE and what is the SOLVENT?

300

Active transport = Low concentration --> High concentration
Active transport is the movement of molecules from an area of ______ concentration to an area of _______ concentration.

400

Mitochondria
What organelle is responisble for the release of ENERGY?

400

Transport proteins
Facilitated (facilitate=to make easier) diffusion requires the use of _______ ________.

400

FALSE. Facilitated diffusion is a type of passive transport (requires NO ENERGY) where molecules move DOWN their concentration gradient.
TRUE or FALSE: Facilitated diffusion requires the use of energy.

400

HYPOtonic solution = solution has a LOWER concentration of solutes than the cell. Water will diffuse INTO the cell causing the cell to GROW LARGER.
In a HYPOtonic solution the solution has a _________ concentration of solutes than the cell. Water will diffuse ______ the cell causing the cell to ________.

400

Water from soil enters a plant root.
Active transport helps explain how_______________________.

500

PROKARYOTES DO NOT have a NUCLEUS EUKARYOTES HAVE a NUCLEUS
What is one main difference between prokaryotes and eukaryotes?

500

Cell size remains constant because water moves into and out the cell at EQUAL rates.
In an ISOTONIC solution, what happens to cell size? WHY?

500

A salt solution
Yesterday in the lab, what kind of solution caused the onion skin cells to SHRINK?

500

WATER to move INTO THE CELL.
An animal cell surrounded by fresh water will burst because the OSMOTIC PRESSURE causes

500

CONCENTRATION GRADIENT=the difference in the concentration of a substance from one location to another
What is a concentration gradient?

DIFFUSION

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