Catalyst #3: November 13th, 2014

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 (5 minutes)• Plant vs. Animal Cells (15 minutes)• Class Questions/Venn Diagram (15 minutes)• Review Worksheet(10 minutes)• Exit Ticket (3 minutes)

• Homework: DBA #10: 11/17• Honors 9 week projects: 3 weeks• The Cell as a ____________ Mini-project

Announcements

• Discovery letters• Office hours TODAY

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 4: 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

CFU 1

• Which of the following structures is found only in the plant cell?A. Central VacuoleB. Cell wallC. ChloroplastsD. All of the above

• Answer: D. All of the above

CFU 2

• What part of the plant cell is labeled by the arrow?

• Answer: Cell Wall

CFU 3

• What part of the plant cell stores extra water and nutrients and supports the leaves and stems of the plant?

• Answer: Central vacuole

CFU 4

• What is the function of the cell wall in the plant cell?

• Answer: Provides extra support, strength, and protection

CFU 5

• Why do only plant cells have chloroplasts?A. Plants need to grow more quickly than animalsB. Plant cells cannot find and consume their own

food like animals canC. Plants are green and so are chloroplastsD. Plants need more energy than animals do

• Answer: B. Plants cannot find and consume their own food like animals can

CFU 6

• What is one structure found in animal cells but NOT in plant cells?

• Answer: Centrioles

Plant and Animal Venn Diagram

• Label one circle “Plant Cells”. Label the other circle “Animal Cells.”

• Place different traits in their circles and similar traits in the center.

• BONUS: Draw a plant and animal cell under their respective circles.

Venn Diagram

• Place each of the structures below in the proper section of the Venn diagram:– 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?