Catalyst #3: November 14th, 2013
1. What part of the cell synthesizes
proteins?
2. What is the function of the rough ER?
3. What part of the cell destroys and
eliminates waste from the cell?
4. What is the function of the Golgi
apparatus?
Agenda
• Catalyst (6 minutes)
• Plant vs. Animal Cells (10 minutes)
• Class Questions/Venn Diagram (15
minutes)
• Review Worksheet(10 minutes)
• Exit Ticket (3 minutes)
• Homework:
– Finish the Plant vs. Animal Cell Worksheet
– Study for a quiz on cellular organelles
Agenda: Honors
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Catalyst (6 minutes)
Plant vs. Animal Cells (10 minutes)
Class Questions/Venn Diagram (15 minutes)
Review Worksheet(10 minutes)
Exit Ticket (3 minutes)
• Homework:
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Finish the Plant vs. Animal Cell Worksheet
Study for a quiz on cellular organelles
Honors Project
The Cell as A ___________________
Announcements
• Mastery slips
• Discovery letters
The Cell as a _____________ Project:
Due Monday
• Create your own analogy for the cell organelles
we discussed (similar to our factory analogy)
• At the top of your paper, list the entity that you
are comparing the cell to. (i.e. School, Military,
Government)
• List each organelle, its function, and its analogous
role
• EXTRA CREDIT: Include a drawing or diagram of
your analogy with each portion labeled
Unit 2: Guiding Questions
• What are all living organisms made up
of?
• What does each part of the cell do?
• What different types of cells exist and
how are they different?
Today’s Objectives
• SWBAT compare and contrast plant and
animal cells in terms of their structural
features
•
• SWBAT explain the unique functions of the
plant-specific organelles and identify these
organelles on a diagram
Plant vs. Animal Cells
Review
• What three features do all cells have?
– Cell membrane, cytoplasm, genetic material
• What type of cells contain a nucleus and other
membrane-bound organelles?
– Eukaryotic cells
• What are some organelles in the eukaryotic
cell?
– Mitochondria, lysosomes, rough and smooth ER,
Golgi apparatus
Plant and Animal Cells
• Key Point 1: Plant cells and animal cells are
both eukaryotic cells
• Therefore, they share many of the same
structures.
• Both plant and animal cells have:
– Cell membrane, nucleus, mitochondria,
lysosomes, ribosomes, rough and smooth ER,
and Golgi apparatus
• What is the function of each of these?
Plant and Animal Cells
Plants vs. Animals
• Clearly, plants and animals are very different,
though they are both made up of cells.
• Their cells have a few key differences also
Plant vs. Animal Cells
 Key Point 2: Plant cells have three key
structures that are not found in the animal
cell because they are not necessary.
 Do you notice any differences in the picture
below?
Cell Wall
• Key Point 3: Plant cells have a cell wall around
the cell membrane that provides an extra
layer of support, strength, and protection for
the cell.
– Cell wall gives plant cells a more square shape
– Animal cells do not have a cell wall, only a cell
membrane
Cell Wall
Why?
• Plant cells need this extra support and
protection because plants are constantly
exposed to physical forces from wind, rain,
animals, and other factors
Chloroplasts
 Key Point 4: Plant cells contain chloroplasts,
which are the location of photosynthesis.
Chloroplasts use energy from the sun to
produce food for the plant
 The food produced during photosynthesis is
glucose
Chloroplasts
Why?
• Plant cells need chloroplasts because they
cannot find and consume food the way that
animals do
– Therefore, they must make their own food
Central Vacuole
• Key Point 5: Plant cells also contain a large,
central vacuole that stores water and
nutrients for the plant cell.
– Looks like a water balloon inside the cell
– Animal cells only have small vacuoles
Central Vacuole
Why?
• The pressure from the water in the
vacuole helps plants support heavy
structures such as leaves and flowers.
– Animals have other support structures and do
not need the extra water storage
The Plant Cell
Plant Cell
Centrioles
• There is one key structure that animal cells
have but plant cells do not
• Key Point 6: Animal cells have centrioles, but
plant cells do not.
• Centrioles organize proteins known as
microtubules involved in cell division and
structural support
Class Question 1
• Which of the following structures is found
only in the plant cell?
A.
B.
C.
D.
Central Vacuole
Cell wall
Chloroplasts
All of the above
• Answer: D. All of the above
Class Question 2
• What part of the plant
cell is labeled by the
arrow?
• Answer: Cell Wall
Class Question 3
• What part of the plant cell stores extra
water and nutrients and supports the
leaves and stems of the plant?
• Answer: Central vacuole
Class Question 4
• What is the function of the cell wall in
the plant cell?
• Answer: Provides extra support, strength,
and protection
Class Question 5
• Why do only plant cells have chloroplasts?
A. Plants need to grow more quickly than animals
B. Plant cells cannot find and consume their own
food like animals can
C. Plants are green and so are chloroplasts
D. Plants need more energy than animals do
• Answer: B. Plants cannot find and consume
their own food like animals can
Class Question 6
• What is one structure found in animal
cells but NOT in plant cells?
• Answer: Centrioles
Plant and Animal Cell Foldable
• Label one flap “Plant Cells”. Label the other
flap “Animal Cells.”
• On the inside, list the similarities on the back
of the flap.
• List the differences on the other flap.
• BONUS: Draw a plant and animal cell under
their respective flaps.
Venn Diagram
• Place each of the structures below in the proper
section of the Venn diagram:
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Mitochondria
Nucleus
Cell wall
Cell membrane
Centrioles
ER
Chloroplasts
Ribosomes
Large Vacuole
Exit Ticket
• Answer the questions below without using
your notes:
1. What are two structures found only in plant
cells?
2. What is the outer layer of the plant cell that
provides extra support called?
3. What part of the plant cell produces food for
the plant during photosynthesis?
4. What does the central vacuole do?