1. Describe the function of the Golgi Apparatus.
DO NOW OCT 17
Describe the function of the Golgi Apparatus.

2. ANSWER
The GA is a flattened stack of membranes with special compartments that modify proteins using special enzymes that attach carbohydrates and lipids.
It collects, modifies, packages, and delivers molecules made at one location in the cell and used at another.
Molecules can be used within the cell or exported out of the cell.

3. Cell Structure and Function
Chapter 7 SECTION 2

4. 7-2 Eukaryotic Cell Structure
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5. Nucleus controls the cell’s activities and contains DNA
prokaryotes: cells without a nucleus
include bacteria
eukaryotes: cells with a nucleus
nuclear envelope: two membranes that surround the nucleus and contain nuclear pores
nucleolus: found in the nucleus and made up of RNA and proteins
makes ribosomes
chromosomes: found in the nucleus and contain the genetic information
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6. Cytoplasm area between the nucleus and the cell membrane fluid
contains many important structures called organelles: tiny structures that performs a specialized function in the cell
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7. 1. Ribosomes structures in which proteins are made
composed of RNA and protein
some are attached to membranes
some are found free in the cytoplasm
smallest organelle
made in the nucleolus
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8. Question of the DAY OCT 18
The main function of the vacuole in plants is to
A. store sugar for later use in cellular respiration
B. eliminate waste from the cell
C. contain chlorophyll for use in photosynthesis
D. store water to maintain a balanced water pressure with the cell’s surroundings.

9. DO NOW Oct 18
Explain the similarities and differences between chloroplasts and mitochondria.

10. DO NOW ANSWER Both organelles contain two membranes.
They both have similar structures.
They both convert one form of energy into another.
Mitochondria converts chemical energy into a usable compound.
Chloroplasts convert light energy into chemical energy.
Similar reactions occur in both organelles.
Chloroplasts are only in plant cells and algae.
Mitochondria are found in both plant and animal cells.

11. AGENDA OCT 18
BIG Question: What are the functions of a cell’s organelles?
1. QoD and DO NOW
2. FINISH Section 7-2 Organelles
3. Study your Chapter 7 Notes
Quiz NEXT WEEK Sections 1 and 2
4. Homework and Review
CELL BOOKLETS DUE MONDAY OCT 21
NO EXCEPTIONS
All NOTES Posted on my webpage!!! USE THEM!!!

12. 2. Endoplasmic Reticulum
complex network of sacs that transports material through the inside of the cell
two types
smooth ER: does not have ribosomes attached
special enzymes and chemicals are stored here
rough ER: has ribosomes attached
Synthesizes proteins
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13. 3. Golgi Apparatus
special compartments that modify proteins using special enzymes that attach carbohydrates and lipids
looks like a flattened stack of membranes piled on top of each other
modifies, collects, packages, and distributes molecules made at one location in the cell and used at another.
Can be used within the cell or exported out of the cell.
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14. 4. Lysosomes
small membrane-bordered structures that contain chemicals and enzymes necessary for digesting materials in the cell that are taken in through endocytosis
Endocytosis - engulfing materials that are too large to pass through the cell membrane
formed by the golgi apparatus
plant cells do not have lysosomes
cell’s cleanup crew
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15. 5. Vacuoles saclike structures that store materials
such as water, salts, proteins, and
carbohydrates
plant cells have single large central vacuoles
allows plants to grow quickly and gives extra support
plastids: plant organelles that may take many forms
one is the chloroplast
involved in storage of food
and pigments
leukoplast: store starch granules
chromoplasts: store pigments
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16. 6. Mitochondria
mitochondria: changes the chemical energy stored in food into compound that the cell can use
contain two special membranes

17. 7. Chloroplast
chloroplast: trap the energy of sunlight and convert it into chemical energy
only in plant cells and algae
structure similar to mitochondria
has a second membrane to change light energy into chemical energy
reactions in both of these organelles are closely related

18. 8. Cytoskeleton
composed of a variety of filaments and fibers that support cell structure and drive cell movement
microtubules: hollow and made of proteins
provide support, help move organelles, and help in cell division
microfilaments: long, thin fibers that function in movement and support
help movement of cytoplasm called cytoplasmic streaming
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19. Centrioles aid the cell in cell division
arranges the microtubules of the cytoskeleton
only found in animal cells
found in pairs

20. SECTION 7-2 REVIEW Close your notebooks.
1. Which organelle contains chemicals and enzymes necessary to break down or digest materials in the cell?
2. Which structures are found in pairs and only present in animal cells?
3. What is the function of a ribosome?

21. 7-2 Review 4. What is the function of this organelle?
5. Describe the parts of the cell involved in the process of making a protein.

22. 7-2 Review Answers 1. Lysosomes 2. Centrioles 3. Makes proteins
4. Traps energy from sunlight and converts it
into chemical energy
5. Located within the nucleus, the nucleolus
makes ribosomes.
Ribosomes make proteins.