1. Start- up for 10/9/10
1. Prokaryotes lack a nucleus and eukaryotes have one.
1. What is the main difference between a prokaryote and a eukaryote?
2. Why are prokaryotes believed to be older cells than eukaryotes?
3. Identify three organelles or structures present in the plant cell that are lacking in the animal cell.
2. Prokaryotes are simpler. It is believed that eukaryotes evolved more complex structures after prokaryotes.
3. Plants contain chloroplasts, a large vacuole and the cell wall.

2. Chapter 7 Section 2 Cell Structures & Functions
Objectives: Students will:
Identify all of the structures and organelles of the cell and summarize their function(s).

3. What are some functions that occur within a cell?
Digestion Excretion
Transportation of cell’s products
Storage Protection
Division Mobility
Respiration or Photosynthesis

4. Nucleus Control Center = Controls activities and reproduction:
Nucleolus=makes ribosomes
What is the control center of the cell? What can we compare it to?
Identify all of the structures and organelles of the cell and summarize their function(s).
Found in both Plant and Animal Cells
Identify all of the structures and organelles of the cell and summarize their function(s).
Animal Cell

5. Chromosomes = coiled DNA: determines our characteristics.
The Nucleus:
DNA = chromosomes housed here
Chromosomes = coiled DNA: determines our characteristics.
Chromatin = visible protein composing chromosomes
Nuclear membrane = controls what goes in and out of the nucleus (notice the nuclear pores)

6. Cytoplasm: or cytosol = gel surrounding organelles = water in balloon
Identify all of the structures and organelles of the cell and summarize their function(s).
What is the internal jelly called?
Cytoplasm: or cytosol = gel surrounding organelles = water in balloon

7. Ribosomes= Protein Synthesis on the E.R.
Identify all of the structures and organelles of the cell and summarize their function(s).
Ribosomes= Protein Synthesis on the E.R.
Endoplasmic Reticulum
ROUND Ribosomes
What is the ER? I think ribs, muscle (6 pack), protein, ribosome.

8. ER = Endoplasmic Reticulum:
produces & transports lipids and membrane proteins, modifies
Rough ER has ribosomes Smooth ER lacks ribosomes
Identify all of the structures and organelles of the cell and summarize their function(s).

9. Endoplasmic Reticulum
“Rough” has Ribosomes = protein synthesis
“Smooth” = Membrane “highway” for transport
Identify all of the structures and organelles of the cell and summarize their function(s).

10. Golgi Bodies (aka Golgi Apparatus):
Identify all of the structures and organelles of the cell and summarize their function(s).
Golgi Bodies (aka Golgi Apparatus):
Packages proteins
Think G’s for the Golgi. Twp G’s in Golgi, a “G” in Packages, and it looks like a package of Hot dogs. G’s again.
“Sacks” for making
& storing Secretions
Package of hot dogs

11. Identify all of the structures and organelles of the cell and summarize their function(s).
Can you identify the path of the protein from start to finish?
Nucleus – Directions
Ribosome – protein is made
ER – protein is modified & transported
Golgi – protein is packaged
Vacuole – protein exits the cell 2. 1. 4. 3.
There are 5 steps. 5.

12. Pressure creates support for leaves and flowers
Identify all of the structures and organelles of the cell and summarize their function(s).
Vacuole = storage for food and water Why are plant vacuoles larger than animal vacuoles?
Plant Vacuole
Pressure creates support for leaves and flowers

13. Do you see 2 Contractile vacuoles
Identify all of the structures and organelles of the cell and summarize their function(s).
Some Animal cell vacuoles pump water out by contracting:
Do you see 2 Contractile vacuoles
in this Paramecium?

14. Contains digestive enzymes
Identify all of the structures and organelles of the cell and summarize their function(s).
Lysosome:
Contains digestive enzymes
Breaks down large molecules
Disposes of waste

15. ATP Heart The mighty mitochondria - lightning bolt = energy
Identify all of the structures and organelles of the cell and summarize their function(s).
Mitochondria = where energy is released
The power house of the cell. Uses respiration to convert sugar into energy (ATP)
The mighty mitochondria - lightning bolt = energy
What organ in the body would have cells containing a high number of mitochondria?
ATP
Heart

16. Complete CH 7-1 and 7-2 review Questions Pg. 172 & 183
Identify all of the structures and organelles of the cell and summarize their function(s).
Understanding Check
When given the following clues, identify the cell part:
Provides energy
Modifies proteins
Controls movement into and out of the cell
Uses sunlight to make sugar
Controls cell activities
Makes ribosomes
Packages proteins for transport
Removes liquid waste
Makes protein
Liquid portion of the cell
Answers:
Mitochondrion ER
Cell Membrane
Chloroplast
Nucleus
Nucleolus
Golgi Apparatus
Vacuole
Ribosome
Cytoplasm
Complete CH 7-1 and 7-2 review Questions Pg. 172 & 183