1. 7th Cells and Heredity (Module A) Unit 1: Cells
Lesson 3 – Cell Structure and Function

2. Being Eu-nique – ha ha! Get it?
Unit 1 Lesson 3 Cell Structure and Function
Being Eu-nique – ha ha! Get it?
Structure = arrangement of parts
Ex. Cell membrane has a double layer of phospholipids
Function = activity of parts
Ex. Cell membrane protects cell and regulates what enters and leaves
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3. Characteristics of eukaryotic cells
Unit 1 Lesson 3 Cell Structure and Function
All eukaryotic cells have…
Cell membrane (previous slide)
Membrane-bound organelles (next few slides)
Cytoplasm – fluid-like substance that fills cell
contains
Cytoskeleton – network of protein filaments that give shape and support cell
Helps in cell division and movement
Found throughout cytoplasm
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4. All eukaryotic cells have (continued)…
Unit 1 Lesson 3 Cell Structure and Function
All eukaryotic cells have (continued)…
Nucleus – contains deoxyribonucleic acid (DNA)
DNA has instructions for making proteins – sends instructions out through pores in cell membrane
DNA in form of chromatin or chromosomes
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5. Organelles in plant and animal cells
Unit 1 Lesson 3 Cell Structure and Function
Organelles in plant and animal cells
1. Mitochondrion - “powerhouse of the cell”
Perform cellular respiration –process where cells break down food to get energy
Have their own DNA & 2 membranes
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6. Organelles in plant and animal cells (con’t)
Unit 1 Lesson 3 Cell Structure and Function
Organelles in plant and animal cells (con’t)
2. Ribosomes - make proteins by putting together chains of amino acids
not enclosed in a membrane.
some are “free” others attached to endoplasmic reticulum.
Read pg. 28 as a class
Do 8 & 9 as a class
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7. Organelles in plant and animal cells (con’t)
3. Endoplasmic reticulum (a.k.a. ER) – helps make proteins and lipids and processes and moves proteins
Rough ER - ribosomes attached
Smooth ER – no ribosomes
4. Golgi complex - packages / distributes materials (lipids, proteins) in a cell.
Read and do pg. 29 in pairs

8. Animal cell Plant cell 5. Vacuole – used for storage
In plants, may be large, filled with fluid, and used to support cell
Do construct a cell interactive -
Animal cell Plant cell

9. Let’s draw! Draw a cell with the following parts -
Nucleus
Cytoskeleton
Cytoplasm
Nucleolus
Golgi complex
Mitochondria
Endoplasmic reticulum
Chromatin
Vacuole
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10. Bonus Plant Cell Parts 1. cell wall-surrounds the cell membrane
Rigid - provides support and protection
Also in some fungi, archaea, bacteria, and protists
2. Chloroplast – where photosynthesis occurs
Photosynthesis is the process by which cells use sunlight, carbon dioxide, and water to make sugar and oxygen
Chloroplasts are green because of the green pigment chlorophyll (absorbs solar energy)
Read page 30-31
Do p. 31 only
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11. What additional parts are found in plant cells?
Unit 1 Lesson 3 Cell Structure and Function
What additional parts are found in plant cells?
How does a chloroplast make food for a plant cell?
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12. Bonus Animal Cell Part 1. Lysosomes - contain digestive enzymes
break down damaged organelles, waste material, and foreign invaders.
Can happen in vacuoles
Do pages
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14. Your Misson
Use a ruler and a pencil to mark strips on a piece of paper that are 8 inches long and 1 inch wide
Use scissors to cut out each strip
Use a pen or pencil to write the entire alphabet on each strip
Make the first loop in the chain and tape it together
Now make a chain by threading the loops

15. When different cells do different specific things
The advantage to being specialized is cells can be more efficient & effective when they are part of a “team”

16. Group of tissues that work together
Smallest unit of living thing
Can carry out life processes by itself
Group of similar cells that work together
Group of organs that work together

18. Do unicellular organisms have levels of organization. NO
Do unicellular organisms have levels of organization? NO! Only one cell to do all the things!

19. Arrangement of parts
Read page 44
How something works