Science 8
Name: ________________ Blk: _____
Chapter 2 - Cells and Cell Systems
Section 2.1 – Cell Organization (pages 41 – 42)
1. Define tissue, organ and organ system.
2. Organize the following structures from smallest to largest: organ system, tissue, cell,
and organ.
Section 2.2 – Unicellular Organisms (pages 43 – 47)
1. What is another name for unicellular organisms? Why are they called that name?
2. How are unicellular organisms similar to multicellular organisms (relate it in terms
of basic functions)?
3. How are micro-organisms important? How are they harmful (give some specific
examples)?
4. What type of cell are bacteria – eukaryotic or prokaryotic? Why do you think
bacteria are considered to be more primitive than other cells you have studied?
5. What is unusual about protists? Are protists eukaryotic or prokaryotic cells?
6. How are protists plant-like? Name two plant-like protists from the textbook.
Describe how the examples are the same and how they are different.
7. How are protists animal-like? Name two animal-like protists from the textbook.
Section 2.3 – The Need for Cell Division
(pages 49 – 50)
1. Which cell, large or small, is more efficient at:
a) Transferring chemical messages from its surroundings to its nucleus?
b) Transporting nutrients into and waste materials out?
2. Explain why highly active cells tend to be small.
Section 2.4 – Cell Specialization
(pages 51 – 53)
1. Why is cell specialization important?
Science 8
Section 2.5 – Cell Wars
Name: ________________ Blk: _____
(pages 54 – 59)
1. Define disease.
2. Define infection.
3. What are the four invaders that cause infection? Give an
example of a disease
caused by each.
4. Why are viruses not considered to be living things?
5. Summarize how viruses invade and infect a cell. Do not copy from text.
6. Identify and describe two ways in which white blood cells protect the body from
diseases.
7. Define genetic engineering.
8. Give two pros and two cons of genetic engineering.