warm-up: update your table of contents byot tomorrow! get your analogies out to be checked –...
TRANSCRIPT
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Warm-Up:
Update your Table of Contents BYOT TOMORROW! Get your analogies out to be checked
– have a good one to share?
Date Session#
Activity Page#
2/19 3 Cellular Processes – Intro to STERNGRR 6
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Review…now that we’ve refreshed our memory we can add some details
Organized Structure (cells & their organelles - DNA/genetic code)
Grow and Develop (change over time = evolution; repair cells; make new cells)
Respond to Environment (adapts) Reproduction (one of many
metabolic or cellular processes)
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Review
Cells contain organelles and each organelle has a specific function to keep the cell alive…
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Review Game
Organelle Mix & Match – use the pink cards to match the organelle to its function
* leave the green cards in the bag for now!
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Review
The two main processes are Photosynthesis & Cellular Respiration but there are many more processes that ensure cell function & survival!
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(Metabolic) Cellular Processes:The processes we will discuss…STERNGRR
1. Synthesis (photosynthesis would fit here)
2. Transport3. Excretion4. Regulation5. Nutrition6. Growth7. Respiration (cellular respiration would fit here)
8. Reproduction
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Synthesis
How organisms build necessary molecules Examples:
Protein Synthesis: making proteins Photosynthesis: plants make food using energy from sunlight
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Synthesis
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of synthesis!
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Transport
How organisms get what they need to cells (moving materials within the organism) Examples:
Active Transport vs. Passive Transport
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Transport
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of transport!
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Excretion
How organisms get rid/break down their waste and balance their fluids Examples:
Removing fluids to balance water Removing unused molecules from food
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Excretion
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of excretion!
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Regulation
How organisms control body processes Examples:
Important to homeostasis - to maintain balance within the body and adapt to changes
Sweating – reduces
body temperature
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Regulation
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of regulation!
Sweating – reduces
body temperature
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Nutrition How organisms get or obtain food Examples:
Fungi decompose dead remains (decomposer) Plants make their own food (autotroph) Animals consume other organisms and absorb food (heterotroph)
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Nutrition
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of regulation!
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Growth
How organisms make new cells and develop and repair necessary body parts Example: Mitosis
Grow – to get larger in size; body size
Develop – to change due to hormonal or mental cues
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Growth
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of growth!
Grow – to get larger in size; body size
Develop – to change due to hormonal or mental cues
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QUICK REVIEW: Living things may be complex and made up of many levels
5. Organism
4. Organ System
3. Organs
2. Tissues
1.Cells – basic unit of life* Atoms, Molecules*Elements
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Muscle cell
Muscle tissue
Heart
Circulatory System/ Organsim
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Respiration
How organisms make usable energyA series of chemical reactions that result in the release of energy called ATP
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Respiration
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of respiration!
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Reproduction Organisms produce offspringExamples:
Meiosis Sexual or Asexual Reproduction Prevents Extinction
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Reproduction
Using your STERNGRR cards & match up organelles that would take part in the metabolic cellular process of reproduction!
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A Gummy Situation
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Part 1: Create a Hypothesis…
If I leave my gummy bear baby in water until Thursday, then…..because…..
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Relationship Sets - Classwork
Use the words on your vocab set 8 list as well as the STERNGRR words we learned today and construct 10 relationship sets!
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Warm-Up:
Update your Table of Contents Write a reminder about your “Acting
Out the Roaring 20’s” in your agenda Get ready for a speedy lesson!
Date Session#
Activity Page#
2/21 4 Cellular Processes – In Depth 7
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Cellular Processes:The processes we will discuss…
• Review Photosynthesis1. Cellular Respiration2. Transport
Active Passive
DiffusionOsmosis
3. Mitosis
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Photosynthesis - just a reminder…
Plant cells use energy from the sun, carbon dioxide and water to make food
Starting Materials
Process Products
Energy (sunlight)Carbon DioxideWater
The chloroplasts take the sunlight, carbon dioxide and water and makes food
Sugars Oxygen
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1. Cellular Respiration
Animal Cells then use the oxygen and sugars to “breathe” and make energy (ATP)
Starting Materials
Process Products
SugarsOxygen
The mitochondria takes the sugar and the oxygen and makes energy
Energy (ATP)Carbon DioxideWater
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Cellular Respiration Review Question
Why do you breathe more when you’re running around than when you’re sitting watching television?
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Cellular Respiration Answer
Because you’re requiring more energy when you run than when you’re just sitting watching TV right?
So if you need more energy, then you need more oxygen to give you that energy so your cells undergo respiration!
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2. TRANSPORT Things have to move in and out
of the cell
There are 2 types of transportActive TransportPassive Transport
Remember: Which organelle allows things to enter or leave the cell?
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Active VS. Passive
Materials are moved in and out of cell using the cell’s energy
Materials are moved in and out of cell WITHOUT using the cell’s energyRemember:
Which organelle makes the energy for the cell again?
What is that process called when the cell makes energy?
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Passive Transport
The cell uses two main processes to passively move materials in and out of the cell. Diffusion Osmosis
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Diffusion
Process by which molecules spread out Move from areas of HIGH
concentration to LOW concentration
BUT WHY??
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Equilibrium
Molecules don’t like to be crowded, so they diffuse, or spread out until their concentration is equal everywhere!
This idea is known as equilibrium
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Diffusion Review Question
What happens to the concentration of Kool-Aid when you add water? Why?
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Diffusion Review Answer
The Kool-Aid begins to move throughout the water so the concentration of kool-aid becomes the same throughout the water and it reaches equilibrium
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Diffusion Demo
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Osmosis
The diffusion of water through a membrane
Remember:
Which organelle would store water in the cell??
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Osmosis Review Question
Why do your hands get wrinkly when you’re in the water for a long time?
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Osmosis Review Answer When your hands are in water for a long
period time you wash off the oily substance that keeps water for entering your skin. So once that oily layer is washed away your skin becomes semi-permeable and water diffuses into your skin. Your hands become wrinkly because they are trying to reach equilibrium with the water!!
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A Gummy Situation
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Let’s take a break and check on our Gummy Bear Babies…
Using the following vocabulary words, explain what happened to your baby: Transport (distinguish whether it is
active or passive) Osmosis Diffusion Concentration Equilibrium
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3. Mitosis
The steps a cell goes through to reproduce and make more cells so an organism can grow and repair itselfNew cell is an
exact copy of original cell
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Mitosis
Mitosis is a process broken down into 4 parts: Part 1: Prophase Part 2: Metaphase Part 3: Anaphase Part 4: Telophase
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Cells Alive Animation
Phases of Mitosis
http://www.cellsalive.com/mitosis.htm
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Bonus…
If your gummy bear baby was alive, how could you use the word MITOSIS to describe what happened to it?
Add this to your previous Quick Write for “A Gummy Situation” Part 2
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Mitosis Use your book to fill out the
graphic organizer for Mitosis…Pages E82-E83
Prophase• Nuclear membrane disappears
• DNA condenses into chromosomes
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Mitosis
Anaphase • Chromosomes split into two identical separate chromosomes
• The 2 sets of chromosomes pull to the opposite ends of the cell
Metaphase• Chromosomes line up in the middle of the cell
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Mitosis
Telophase• 2 new nuclear membranes form
• The cell pinches and divides into 2 new cells!!
Mitosis Review Question: Why do you think it is important for the DNA/chromosomes to be copied before the cell divides?
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Are You Smarter than a Vampire??
Twilight Mitosis Clip
http://www.youtube.com/watch?v=sOM_u1PY0s0