BELL WORK: Write down the words that should go into the blue boxes

Molecule TransportHIGH to

LOWLOW to HIGH

Diffusion

Facilitated DiffusionOsmosis

Active Transport

needs energy!

smal

l mol

ecul

es water

no energy!

large moleculesuses transport

proteins

*The blue boxes are HIDING the answers.

Open journals to page 21

•We will finish our Egg Lab today.

QUESTION 1

What will happen to a cell if it were placed in an isotonic solution?

A) Get BiggerB) Get smallerC) No change in size

Why? Equal water concentrations inside and outside the cell

QUESTION 2

What will happen to a cell if it were placed in a hypertonic solution?

A) Get BiggerB) Get smallerC) No change in size

Why? Water will leave the cell

QUESTION 3

What will happen to a cell if it were placed in a hypotonic solution?

A) Get BiggerB) Get smallerC) No change in size

Why? Water will enter the cell

QUESTION 4Which one requires energy?

A) diffusionB) facilitated diffusionC) OsmosisD) Active transport

Why? Large molecules are moving AGAINST the concentration gradient

Question 5

What is the specific type of diffusion, that involves water?A) DiffusionB) Facilitated diffusionC) OsmosisD) Active Transport

Does this process require energy? No this type of diffusion DOES NOT require energy

Question 6

What are the 3 organelles responsible for the direct production of the protein?A) centriole, mitochondria, ribosomeB) Ribosome, Endoplasmic Reticulum, Golgi apparatusC) Vacuole, cell membrane, ribosomeD) Ribosome, Endoplamsmic Reticulum, mitochondria

Question 7

Which organelle lets things in and out of the cell?

A) RibosomeB) MitochondriaC) Golgi ApparatusD) Cell Membrane

Question 8

What is the “BASIC UNIT” of life?

A) AtomsB) CellsC) MoleculesD) Compounds

Atoms are smaller than cells but they are NOT alive

Question 9

A) That 2 prokaryotes made 2 eukaryotic cellsB) That 2 eukaryotic cells made 2 prokaryotic cellsC) That 2 prokaryotic cells made 1 eukaryotic cellD) That 2 prokaryotic cells broke apart to form a eukaryotic

cell

The diagram to the right shows that….

Question 10When you see the words…..”maintain a stable internal environment”, you should think?

A) Active transportB) Concentration gradientC) permeabilityD) homeostasis (a state of balance)

Question 11

What component of the cell membrane helps communicate the most with other cells?A)The proteinsB)The carbohydratesC)The lipidsD)They don’t communicate

Question 12

What is the final goal of diffusion?

A) Cells like to move around stuffB) To move as much stuff as possibleC) To reach a concentration equilibriumD) To move from Low to High concentration

Question 13

Facilitated diffusion is a process that involves the movement of?

A) Water moleculesB) Stuff from Low to High concentrationsC) small molecules through the proteinsD) LARGE molecules though the proteins

What is a selectively permeable membrane?A) A membrane that NOTHING can get inB) A membrane that everything can get inC) A membrane that only some things can

get in

Question 14

Question 15 (What is at A? The Golgi Apparatus

Question 16 (What is at D? ) The Nucleus

Question 17 (What is at E? ) The Ribosomes

18. The picture below represents a container separated by a membrane. The black dots represent glucose molecules. According to the diagram, in which direction will osmosis occur if the membrane is impenetrable to the glucose.

This question is asking about the direction of osmosis (water). The side marked A has more pure water than side B, therefore Osmosis will occur to the right. In this question we are NOT focusing on the particles, we are looking at WATER concentration.

19. A lab technician needs to determine whether cells in a test tube are prokaryotic or eukaryotic. The technician has several dyes she could use to stain the cells. Four of the dyes are described in the table below.

Which dye could the technician use to determine whether the cells are prokaryotic or eukaryotic? Since the nucleus is a distinctive feature then “Nile Blue” is the dye the technician should use to determine if it’s prokaryotic or eukaryotic

20. What type of transport is being used to move the top H+ molecule? The example

in the box is Active Transport. There is ATP present and the molecule is moving from LOW to HIGH concentration through the protein.

21. What type of transport is being used to move the sucrose molecule?

*Hint…what process do you know it is NOT

The example in the box is Facilitated Diffusion. The molecule is moving through a protein and NO ATP is needed.

22. What is part D in the diagram?

What does it do for the cell?

“D” is the protein component of the cell membrane. It allows LARGE molecules to pass in and out of the cell.

23.A kidney consists of a large number of very small tubes called kidney tubules. Some of the cells which line these

tubules are able to absorb glucose. The diagram shows how these cells absorb glucose from the contents of the tubule and secrete it into the blood.

G lu co se m o v e s in to ce ll b y

fac ilita ted d iffu s io n

In s id e o fk id n ey tu b u le C ell B lo o d

G lu c o se sec re ted fro m c e ll

b y a c tiv e tra nsp o rt

O rg a n elle A

Glucose moves into the cell by facilitated diffusion. Osmosis also takes place across the plasma membrane. Give two differences between facilitated diffusion and osmosis.

The actual question is boxed below. Always find the question first.

Difference 1: Osmosis only deals with WATER

Difference 2: Facilitated Diffusion requires a Protein channel