aug. 24(plant vs. animal cells)
TRANSCRIPT
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Biology IMr. Nettles
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Agenda- Wednesday, August 24, 2011
1. Warm Up – 5 min
1. Review Activity – 10 min
1. Daily Lesson – 20 min
1. Wrap Up (in teams) – 10 min
2. Begin Homework – 15 min
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Today’s Objectives
• I will define the words: vacuole, cell wall, chloroplast, and centriole.
• I will define and describe the primary organelles of eukaryotic cells.
• I will articulate the differences between plant and animal cells.
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Warm-Up
1. Define organelle.
1. Identify two differences between the ER and the Golgi apparatus.
2. Which organelle is responsible for breaking down dying organelles and food particles within cells?
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Review: Come up with a school-related analogy for the different parts of the cell1. Nucleus - Central Office2. Nucleolus - Guidance Office3. Cytoplasm - ?4. Cell membrane - ?5. Ribosome - ?6. Endoplasmic Reticulum - ?7. Golgi apparatus - ?8. Mitochondria - ?9. Lysosomes - ?
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Plant Cells vs. Animal Cells
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Vacuoles (what they both have)
Definition: • fluid-filled sac
- Small in animal cells- Large in plant cells
Function: • Used to store materials needed by the cell like
water, food and enzymes- Supports heavy structures like leaves and flowers in
plants
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Organelles found ONLY in Plants:
Cell Walls
Chloroplasts
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Cell Wall
Definition: • A rigid layer that surrounds the cell membrane
Function: • To provide support and protection for the cell
- The cell walls of multiple cells can attach to one another to support the organism
- Cell walls are made of different materials depending on the organism
*Note: Cell walls are also found in prokaryotic cells.
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Cell wall
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Chloroplasts
Definition:• Are organelles that have a double membrane
and stacks of disc-like shapes containing chlorophyll
Function: • Use energy from the sunlight to make food for
the cell through the process of photosynthesis- Chlorophyll gives plants their green color- Like mitochondria because it provides energy
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Chloroplast
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PLANT CELL
Cell wall
Large vacuole
Chloroplast
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Organelle found ONLY in Animals:
Centrioles
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Centrioles
Definition:• Are barrel-shaped organelles composed mostly
of microtubules
Function: • Organize and transfer chromosomes and other
organelles during Meiosis and Mitosis• Serve as the construction point for cellular
microtubules
*Note: Centrioles are also found in some prokaryotic cells.
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Centriole
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Small vacuole
Centriole
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Wrap-Up
1. Get in teams of two or three people.
1. Take out a sheet of paper to write your answers.
2. In the questions that follow, your team needs to “Name that Organelle”.
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Question 1
I’m a real “powerhouse”That’s plain to seeI break down foodTo release energy
What am I? ______________________
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Question 2
I’m strong and stiffGetting through me is toughI’m found only in plantsBut I guess that’s enough
What am I? _____________________
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Question 3
I’m the brain of the cellOr so they sayI regulate cell activitiesFrom day to day
What am I? ____________________
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Question 4
Found only in plant cells,I’m green as can beI make food for the plantUsing the sun’s energy
What am I? ______________________
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Question 5
I’m a series of tubesFound throughout the cellI transport proteinsAnd other things as well
What am I? ___________________
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Question 6
I’m full of holesFlexible and thinI control what gets outAnd what comes in
What am I? _________________
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Question 7
Proteins are made hereEven though I’m quite smallYou can find me in the cytoplasmOr attached to E.R.’s wall
What am I? ______________________
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Question 8
I’ve been called a “storage tank”By those with little tasteI’m a sac filled with waterFood, enzymes, or waste
What am I? ______________________
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Question 9
Since I contain many enzymes,I can digest an injured cell;And can break down a large molecule Into a smaller one as well
What am I? ______________________