Download Unit 1 Lesson 3 - Belle Vernon Area School District

Unit 1
Lesson 3
Assignment: Read pgs 25-33
Questions: 1,2,3,6,7,8,9,10,11,13,14,15,18,19 (14pts)
Cell Structure and Function
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Eukaryotic cells can differ from each other depending on their jobs
Structure is the arrangement of parts
Function is the activity the parts carry out
Ex: plant and animal cells differ, cells in a single organism can be different
depending on function
Most cells in multicellular organisms have a special role. This is called
differentiation.
Parts of the Cell
1.
2.
3.
4.
5.
6.
7.
Cell membrane – determine what enters and leaves the cell
Cytoplasm - gel like material that surrounds organelles / contains nutrients
Cytoskeleton – protein filament that gives shape/ support to cell
Nucleus – contains genetic material (DNA)
DNA – stores information for making proteins
Nuclear Membrane – determines what enters and leaves the nucleus
Mitochondria - site of cellular respiration; energy is produced
- has own DNA
Sugar + Oxygen  Carbon Dioxide + H20 + Energy (ATP)
8. Ribosomes - Produces protein
- Proteins are made of amino acids
- 20 amino acids
- Some float free, Others are attached to Endoplasmic Reticulum
9. Endoplasmic Reticulum – Assists in the production, processing, and
packaging of proteins and lipids
a. Rough ER: makes proteins
b. Smooth ER: Makes lipids and breaks down toxins
10. Golgi Complex – Packages and distributes materials
- Modifies lipids and proteins for specific jobs
- Packages them in vesicles
Only in Plant Cells
11. Cell Wall – Rigid structure that provides support and protections
- Also found in fungi, archea, bacteria, some protists
12. Large Central Vacuole – Fluid filled Vessicle
- Found in animals, plants, fungi
- Contains enzymes, nutrients, water, wastes
13. Chloroplasts – Organelle where photosynthesis occurs
- Contains the pigment chlorophyll
- Sugar is used by mitochondria to make Energy (ATP)
Additional Part of Animal Cell
14. Lysosome – use digestive enzymes to break down worn out organelles,
waste materials and foreign invaders
- Ex: Liver Cells
Assignment: pg 35 #1 – 11 (11pts)