How do molecules move in and out of our cells?

Introduction You will be: Reviewing Cell Basics if needed. Learning about diffusion. Learning about osmosis. Taking quizzes to make sure you know your stuff! This button will take you through to the next set of information! JUST CLICK! This button will take you through to the next Quiz Question! JUST CLICK! Multiple Choice answers on Quizzes are set in buttons. JUST CLICK your answer-choice!

Quiz 1: Question #1/3 A) DNA molecule B) Cell Cell C) Organ System All living things are composed of at least one ______________. D) I don’t know…

Quiz 1: Question #1/3 A) DNA molecule B) Cell C) Organ System D) I don’t know… All living things are composed of at least one ______________. Next Question Great Job! Let’s move on to the Next Question!

Quiz 1: Question #1/3 All living things are composed of at least one ______________. A) DNA molecule B) Cell C) Organ System D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 1: Question #1/3 All living things are composed of at least one ______________. A) DNA molecule B) Cell C) Organ System D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 1: Question #1/3 All living things are composed of at least one ______________. A) DNA molecule B) Cell C) Organ System D) I don’t know… Some Review No Problem… Let’s Review Again!

Quiz 1: Question #2/3 Which process keeps the internal conditions of cells stable and consistent? A) Metabolism B) Photosynthesis C) Homeostasis D) I don’t know…

Quiz 1: Question #2/3 Which process keeps the internal conditions of cells stable and consistent? A) Metabolism B) Photosynthesis C) Homeostasis D) I don’t know… Next Question Great Job! Let’s move on to the Next Question!

Quiz 1: Question #2/3 Which process keeps the internal conditions of cells stable and consistent? A) Metabolism B) Photosynthesis C) Homeostasis D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 1: Question #2/3 Which process keeps the internal conditions of cells stable and consistent? A) Metabolism B) Photosynthesis C) Homeostasis D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 1: Question #2/3 Which process keeps the internal conditions of cells stable and consistent? A) Metabolism B) Photosynthesis C) Homeostasis D) I don’t know… Some Review No Problem… Let’s Review Again!

Quiz 1: Question #3/3 (True or False) Cells Membranes are an outer barrier, which control what moves into and out of a cell. A) True B) False

Quiz 1: Question #3/3 (True or False) Cells Membranes are an outer barrier, which control what moves into and out of a cell. A) True B) False Continue Learning Great Job! Let’s move on to Diffusion!

Quiz 1: Question #3/3 (True or False) Cells Membranes are an outer barrier, which control what moves into and out of a cell. A) True B) False Some Review Sorry, that’s not correct… Let’s Review Again!

Remember that… All living things are made of cells. Cells are always experiencing changing environments! Outside Change  Inside Change Cells need to maintain balance…. REVIEW: What are cells? Continue Learning

Homeostasis is the process of keeping the inside of cells stable and healthy… Regardless of the craziness going on around the cell! INSIDE OUTSIDE REVIEW: What is homeostasis? Continue Learning

OutsideInside But sometimes changes on the OUTSIDE force the INSIDE to take control! Your body wants to keep the inside and outside balanced… Re-Take Quiz

Cells are mini-factories… They have all of these parts inside that work together! And they have gates on the outside to secure the property! REVIEW: Cell Structure & Function Continue Learning

Control Center Workers Security Gate & Traffic Control Continue Learning

REMEMBER:REMEMBER: –Cell Membranes are the outer covering of cells. –Cell Membranes are semi-permeable… only some things can enter and leave! –Cell Membranes are a made of 2 lipid layers with channels! REVIEW: Cell Membranes Continue Learning

DIFFUSION: Introduction (0/5) Watch the animation below. Questions to Think About: Questions to Think About: 1. What do you think the dots represent? 2. How many dots start in the corner, compared to the rest of the box? 3. How do the dots move? Which direction? 4. What is the end result? Continue Learning

Particles (Molecules and Atoms) need to be balanced out… DIFFUSION: Equilibrium (1/5) This is NOT balanced! Notice all of the dye-particles are concentrated in the center and bottom of the water! This IS balanced! Notice the dye particles are now spread out throughout the water! “Balance” = Equilibrium Re-Take Quiz Continue Learning

Diffusion is the movement of particles from HIGH to LOW concentration, ultimately reaching equilibrium (without the use of ENERGY)! DIFFUSION: Definition (2/5) Particles are claustrophobic, they like to be spread out and have their own equal spaces! BALANCED Continue Learning Re-Take Quiz

Watch this animation again! Remember to Think About: 1.What do you think the dots represent? 2.How many dots start in the corner, compared to the rest of the box? 3.How do the dots move? Which direction? 4.What is the end result? DIFFUSION: Animation (3/5) The dots are particles (molecules or atoms). There are way more dots/particles in the one corner, than the rest of the box! The dots/particles move from an area with MORE (High Concentration), to an area with LESS (Lower Concentration)! The dots/particles are evenly spread out and balanced (in Equilibrium)! Continue Learning Re-Take Quiz

DIFFUSION: Example (4/5) Diffusion of Dye particles/molecules: Dye particles all start on top of water….HIGH Concentration! Dye particles need to be balanced… Dye particles move to areas with LOWER Concentration (fewer particles) Dye particles reach EQUILIBRIUM! Continue Learning Re-Take Quiz

Start: There are tons of particles outside the cell, and none on the inside! DIFFUSION: Example (4/5) Particles move across the Cell Membrane from HIGH to LOW concentration! End: The number of particles on the inside & outside of the cell is balanced! EQUILIBRIUM! Start the Quiz Re-Take Quiz

____________ is the state in which there is balance, and any particles/molecules are evenly spread out. Quiz 2: Question #1/5 A) Diffusion B) Equilibrium C) Isotropy D) I don’t know…

Quiz 2: Question #1/5 ____________ is the state in which there is balance, and any particles/molecules are evenly spread out. A) Diffusion B) Equilibrium C) Isotropy D) I don’t know… Next Question Great Job! Let’s move on to the Next Question!

Quiz 2: Question #1/5 ____________ is the state in which there is balance, and any particles/molecules are evenly spread out. A) Diffusion B) Equilibrium C) Isotropy D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 2: Question #1/5 ____________ is the state in which there is balance, and any particles/molecules are evenly spread out. A) Diffusion B) Equilibrium C) Isotropy D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 2: Question #1/5 ____________ is the state in which there is balance, and any particles/molecules are evenly spread out. A) Diffusion B) Equilibrium C) Isotropy D) I don’t know… Some Review No Problem… Let’s Review Again!

Quiz 2: Question #2/5 What is diffusion?... A) The movement of particles from HIGH to LOW concentration to reach equilibrium. B) The movement of particles from LOW to HIGH concentration to reach equilibrium. C) A process which requires energy. D) I don’t know…

Quiz 2: Question #2/5 What is diffusion?... A) The movement of particles from HIGH to LOW concentration to reach equilibrium. B) The movement of particles from LOW to HIGH concentration to reach equilibrium. C) A process which requires energy. D) I don’t know… Next Question Great Job! Let’s move on to the Next Question!

Quiz 2: Question #2/5 What is diffusion?... A) The movement of particles from HIGH to LOW concentration to reach equilibrium. B) The movement of particles from LOW to HIGH concentration to reach equilibrium. C) A process which requires energy. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 2: Question #2/5 What is diffusion?... A) The movement of particles from HIGH to LOW concentration to reach equilibrium. B) The movement of particles from LOW to HIGH concentration to reach equilibrium. C) A process which requires energy. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 2: Question #2/5 What is diffusion?... A) The movement of particles from HIGH to LOW concentration to reach equilibrium. B) The movement of particles from LOW to HIGH concentration to reach equilibrium. C) A process which requires energy. D) I don’t know… Some Review No Problem… Let’s Review Again!

What will happen with the purple molecules? Quiz 2: Question #3/5 A) The purple molecules will remain where they are. B) All of the purple molecules will move to the left side. C) Some of the purple molecules will move to the left side D) I don’t know…

What will happen with the purple molecules? Quiz 2: Question #3/5 A) The purple molecules will remain where they are. B) All of the purple molecules will move to the left side. C) Some of the purple molecules will move to the left side. D) I don’t know… Next Question Great Job! Let’s move on to the Next Question!

What will happen with the purple molecules? Quiz 2: Question #3/5 A) The purple molecules will remain where they are. B) All of the purple molecules will move to the left side. C) Some of the purple molecules will move to the left side. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

What will happen with the purple molecules? Quiz 2: Question #3/5 A) The purple molecules will remain where they are. B) All of the purple molecules will move to the left side. C) Some of the purple molecules will move to the left side. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

What will happen with the purple molecules? Quiz 2: Question #3/5 A) The purple molecules will remain where they are. B) All of the purple molecules will move to the left side. C) Some of the purple molecules will move to the left side. D) I don’t know… Some Review No Problem… Let’s Review Again!

Ewww!! Yoshi “lets one loose”! What will happen with this fart-smell & Why?? Quiz 2: Question #4/5 A) The fart-particles will stay around Yoshi because The fart-particles will stay around Yoshi because there is no energy to move them. B) The fart-particles will spread out to reach equilibrium, making this whole room stinky! C) The fart-particles will move from low to high The fart-particles will move from low to high concentration. D) I don’t know…

Ewww!! Yoshi “lets one loose”! What will happen with this fart-smell & Why?? Quiz 2: Question #4/5 A) The fart-particles will stay around Yoshi because there is no energy to move them. B) The fart-particles will spread out to reach equilibrium, making this whole room stinky! C) The fart-particles will move from low to high concentration. D) I don’t know… Last Question Great Job! Let’s move on to the Last Question!

Ewww!! Yoshi “lets one loose”! What will happen with this fart-smell & Why?? Quiz 2: Question #4/5 A) The fart-particles will stay around Yoshi because there is no energy to move them. B) The fart-particles will spread out to reach equilibrium, making this whole room stinky! C) The fart-particles will move from low to high concentration. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Ewww!! Yoshi “lets one loose”! What will happen with this fart-smell & Why?? Quiz 2: Question #4/5 A) The fart-particles will stay around Yoshi because there is no energy to move them. B) The fart-particles will spread out to reach equilibrium, making this whole room stinky! C) The fart-particles will move from low to high concentration. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Ewww!! Yoshi “lets one loose”! What will happen with this fart-smell & Why?? Quiz 2: Question #4/5 A) The fart-particles will stay around Yoshi because there is no energy to move them. B) The fart-particles will spread out to reach equilibrium, making this whole room stinky! C) The fart-particles will move from low to high concentration. D) I don’t know… Some Review No Problem… Let’s Review Again!

There are 20 water molecules on the outside of the cell, and 5 water molecules on the inside of the cell. Which of the following statements is true? Quiz 2: Question #5/5 A)There is a higher concentration of water inside the cell,There is a higher concentration of water inside the cell, than outside. B) The cell is in equilibrium. C) Water molecules will diffuse into the cell. D) I don’t know…

There are 20 water molecules on the outside of the cell, and 5 water molecules on the inside of the cell. Which of the following statements is true? Quiz 2: Question #5/5 A) There is a higher concentration of water inside the cell, than outside. B) The cell is in equilibrium. C) Water molecules will diffuse into the cell. D) I don’t know… Continue Learning Great Job! Let’s move on to the Osmosis !

There are 20 water molecules on the outside of the cell, and 5 water molecules on the inside of the cell. Which of the following statements is true? Quiz 2: Question #5/5 A) There is a higher concentration of water inside the cell, than outside. B) The cell is in equilibrium. C) Water molecules will diffuse into the cell. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

There are 20 water molecules on the outside of the cell, and 5 water molecules on the inside of the cell. Which of the following statements is true? Quiz 2: Question #5/5 A) There is a higher concentration of water inside the cell, than outside. B) The cell is in equilibrium. C) Water molecules will diffuse into the cell. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

There are 20 water molecules on the outside of the cell, and 5 water molecules on the inside of the cell. Which of the following statements is true? Quiz 2: Question #5/5 A) There is a higher concentration of water inside the cell, than outside. B) The cell is in equilibrium. C) Water molecules will diffuse into the cell. D) I don’t know… Continue Learning No Problem… Let’s Review Again!

Watch the animation below about a Red Blood Cell. OSMOSIS: Introduction (0/4) Questions to Think About: Questions to Think About: 1. How is distilled water different from tap water? 2. What would cause the Red Blood Cell to explode? 3. How is this related to diffusion? Continue Learning

Solutes are the “stuff” dissolved in solvents… OSMOSIS: Solutes & Solvents (1/4) Solvents are the “stuff” that hold the solutes (usually water)! Most solvents can move across a cell membrane… Most solutes cannot! Continue Learning Re-Take Quiz

Osmosis is the movement of water from LOW solute concentration, to HIGH solute concentration (without the use of ENERGY)! OSMOSIS: Definition (2/4) Water molecules are great friends, they like to make sure solute particles are never lonely! Particles move when there’s imbalance! Re-Take Quiz Continue Learning

OSMOSIS: Animation (3/4) Watch the animation below about a Red Blood Cell. Questions to Think About: Questions to Think About: 1. How is distilled water different from tap water? 2. What would cause the Red Blood Cell to explode? 3. How is this related to diffusion? Distilled water has NO solute particles in it… Tap water has a variety of solute particles in it! HIGH solute concentration inside the Red Blood Cell, LOW solute concentration outside… WATER rushes into the cell! Water is diffusing into the Red Blood Cell from HIGH water concentration to LOW water concentration. Continue Learning Re-Take Quiz

Your mom packs you some delicious, juicy strawberries in your lunch. You are devastated to find that strawberry-juice has leaked all over the inside of your lunch bag! WHAT HAPPENED??? OSMOSIS: Example (4/4) The plastic baggy is semi- permeable… just like a cell membrane! Water (solvent) can pass through the baggy… You have HIGH water concentration inside your baggy, and LOW water concentration outside your baggy… Water leaves your baggy, and ruins your homework! Re-Take Quiz Start Quiz

You add some Kool-Aid powder to some water. Which is the solute, and Which is the solvent? Quiz 3: Question #1/4 A) The water is the solute, and the powder is the solvent. B) The water is the solvent, and the powder is the solute. C) Because both are made of molecules, they are both solutes. D) I don’t know…

You add some Kool-Aid powder to some water. Which is the solute, and Which is the solvent? Quiz 3: Question #1/4 A) The water is the solute, and the powder is the solvent. B) The water is the solvent, and the powder is the solute. C) Because both are made of molecules, they are both solutes. D) I don’t know… Next Question Great Job! Let’s move on to the Next Question !

Quiz 3: Question #1/4 You add some Kool-Aid powder to some water. Which is the solute, and Which is the solvent? A) The water is the solute, and the powder is the solvent. B) The water is the solvent, and the powder is the solute. C) Because both are made of molecules, they are both solutes. D) I don’t know… Continue Learning Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #1/4 You add some Kool-Aid powder to some water. Which is the solute, and Which is the solvent? A) The water is the solute, and the powder is the solvent. B) The water is the solvent, and the powder is the solute. C) Because both are made of molecules, they are both solutes. C) Because both are made of molecules, they are both solutes. D) I don’t know… Continue Learning Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #1/4 You add some Kool-Aid powder to some water. Which is the solute, and Which is the solvent? A) The water is the solute, and the powder is the solvent. B) The water is the solvent, and the powder is the solute. C) Because both are made of molecules, they are both solutes. D) I don’t know… Continue Learning No Problem… Let’s Review Again!

Osmosis is the movement of water from… Quiz 3: Question #2/4 A) High to low solute concentration. B) Low to high water concentration. C) High to low water concentration. D) I don’t know…

Quiz 3: Question #2/4 Osmosis is the movement of water from… A) High to low solute concentration. B) Low to high water concentration. C) High to low water concentration. C) High to low water concentration. D) I don’t know… Next Question Great Job! Let’s move on to the Next Question!

Quiz 3: Question #2/4 Osmosis is the movement of water from… A) High to low solute concentration. B) Low to high water concentration. C) High to low water concentration. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #2/4 Osmosis is the movement of water from… A) High to low solute concentration. B) Low to high water concentration. C) High to low water concentration. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #2/4 Osmosis is the movement of water from… A) High to low solute concentration. B) Low to high water concentration. C) High to low water concentration. D) I don’t know… Continue Learning No Problem… Let’s Review Again!

Gummy Bears are made of tons of sugar. What will happen if you place a Gummy Bear in a glass of distilled water? Quiz 3: Question #3/4 A) Water will rush in, and the Gummy Bear will inflate. B) Water will leave the Gummy Bear, and it will shrivel up. C) Sugar will leave the Gummy Bear to establish balance. D) I don’t know…

Quiz 3: Question #3/4 Gummy Bears are made of tons of sugar. What will happen if you place a Gummy Bear in a glass of distilled water? A) Water will rush in, and the Gummy Bear will inflate. B) Water will leave the Gummy Bear, and it will shrivel up. C) Sugar will leave the Gummy Bear to establish balance. D) I don’t know… Last Question Great Job! Let’s move on to the Last Question!

Quiz 3: Question #3/4 Gummy Bears are made of tons of sugar. What will happen if you place a Gummy Bear in a glass of distilled water? A) Water will rush in, and the Gummy Bear will inflate. B) Water will leave the Gummy Bear, and it will shrivel up. C) Sugar will leave the Gummy Bear to establish balance. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #3/4 Gummy Bears are made of tons of sugar. What will happen if you place a Gummy Bear in a glass of distilled water? A) Water will rush in, and the Gummy Bear will inflate. B) Water will leave the Gummy Bear, and it will shrivel up. C) Sugar will leave the Gummy Bear to establish balance. D) I don’t know… Some Review Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #3/4 Gummy Bears are made of tons of sugar. What will happen if you place a Gummy Bear in a glass of distilled water? A) Water will rush in, and the Gummy Bear will inflate. B) Water will leave the Gummy Bear, and it will shrivel up. C) Sugar will leave the Gummy Bear to establish balance. D) I don’t know… Some Review No Problem… Let’s Review Again!

You eat a bag of super salty potato chips for lunch. Salt cannot diffuse across your cell’s membranes. What will happen to your cells, & Why? Quiz 3: Question #4/4 A)Your cells will explode…Because waterYour cells will explode…Because water will rush in towards the higher solute concentration. B) Your cells will shrivel up…Because water will rush out towards the lower solute concentration. C) Your cells will shrivel up…Because water will rush out towards the higher solute concentration. D) Nothing will happen… Because the salt is on the outside of your cells.

Quiz 3: Question #4/4 You eat a bag of super salty potato chips for lunch. Salt cannot diffuse across your cell’s membranes. What will happen to your cells, & Why? A) Your cells will explode…Because water will rush in towards the higher solute concentration. B) Your cells will shrivel up…Because water will rush out towards the lower solute concentration. C) Your cells will shrivel up…Because water will rush out towards the higher solute concentration. D) Nothing will happen… Because the salt is on the outside of your cells. One Last Thing Great Job! There’s just one last thing…

Quiz 3: Question #4/4 You eat a bag of super salty potato chips for lunch. Salt cannot diffuse across your cell’s membranes. What will happen to your cells, & Why? A) Your cells will explode…Because water will rush in towards the higher solute concentration. B) Your cells will shrivel up…Because water will rush out towards the lower solute concentration. C) Your cells will shrivel up…Because water will rush out towards the higher solute concentration. D) Nothing will happen… Because the salt is on the outside of your cells. Some Resources Sorry, that’s not correct… Here’s some resources!

Quiz 3: Question #4/4 You eat a bag of super salty potato chips for lunch. Salt cannot diffuse across your cell’s membranes. What will happen to your cells, & Why? A) Your cells will explode…Because water will rush in towards the higher solute concentration. B) Your cells will shrivel up…Because water will rush out towards the lower solute concentration. C) Your cells will shrivel up…Because water will rush out towards the higher solute concentration. D) Nothing will happen… Because the salt is on the outside of your cells. Some Resources Sorry, that’s not correct… Let’s Review Again!

Quiz 3: Question #4/4 You eat a bag of super salty potato chips for lunch. Salt cannot diffuse across your cell’s membranes. What will happen to your cells, & Why? A) Your cells will explode…Because water will rush in towards the higher solute concentration. B) Your cells will shrivel up…Because water will rush out towards the lower solute concentration. C) Your cells will shrivel up…Because water will rush out towards the higher solute concentration. D) Nothing will happen… Because the salt is on the outside of your cells. Some Resources Sorry, that’s not correct… Let’s Review Again!

Interested in some Diffusion & Osmosis Fun?? Egg Osmosis Other Activities Need some more help?? Diffusion, Osmosis & Cell Membranes Back to Diffusion Back to Osmosis