Science
Unit 1 Guide 2
Grade 8
Cells, Tissues, Organs, and Systems
1.2 Using the Microscope
*label all 13 parts of the microscope* - handout
pg. 18-19
1.3 Plant and Animal Cells
*at home project to be presented at school*
pg. 20-21
1. define:
- nucleus
- cytoplasm
- chromosomes
- vacuole
- membrane
2. List and explain each of the animal cell structures.
3. List and explain each of the plant cell structures.
1.6 Parts of a Cell Seen with an Electron Microscope
1. define:
- organelles
- ribosomes
- lysosomes
- mitochondria
- endoplasmic reticulum
pg. 26-27
- respiration
- golgi apparatus
2. List and exaplin all of the organelles inside a cell.
1.7 Cells in Their Environment
1. define:
- selectively permeable
pg. 28-29
- diffusion
2. What is the difference between permeable and impermeable?
3. How do substances move in and out of cells?
1.8 Osmosis
1. define:
pg. 30-33
- osmosis
- turgor pressure
2. What is a solute?
3. What are 3 different environments that a cell may find itself in?
4. What determines the direction of water movement into or out of cells?
1.12 Cells and Cell Systems
1. define:
- tissue
pg. 40-41
- organs
- organ systems
2. Organize the following structures from smallest to largest, and give an example of each:
-organ system
- tissue
- cell
- organ
- molecule
3. Select 1 of the human organ systems and construct a concept map. Arrange the structures in your concept
map from smallest to largest.
1.13 Unicellular Organisms
1. define"
- microorganisms
pg. 42-45
- bacteria
- protists
2. What are 3 types of microorganisms?
3. Compare euglena to a plant cell. Make a list of similarities and differences.
1.14 The Need for Cell Division
pg. 46-47
1. Which size of cell is most efficient at transporting messages from its surroundings to its nucleus; small or
large? Explain.
2. Which size of cell would be most efficient at transporting nutrients in and waste materials out; big or small?
3. Explain why highly active cells, such as muscle cells, tend to be small.
1.15 Cell Specialization
pg. 48-49
1. define: cell specialization
2. What are the advantages of cell specialization for an organism?
3. Name 6 specialized cells found in human bodies and 1 of their functions.
Specialized Cell
Function
Dear Parent/Guardian
This is to notify you that there is a test on Unit 1 Guide 2 on _____________________________2012, by
signing this sheet and returning it before the test, your child will earn an extra point on their test score. Your
child's mark on their last test was
/28.
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