Student Notes/ Answer Key
Chapter 2.1 “Guided Reading and Study” (Guided Notes)
Use Target Reading Skills
Possible answers include:
What You Know:
1. Living things grow.
2. Living things are made of cells.
What You Learned:
1. Unicellular organisms are composed of only one cell.
2. The cells of living things are composed of chemicals.
3. The cells of organisms use energy to do things they must do.
The Characteristics of Living Things (pp.34-35)
1. An organism is a living thing.
2. a. Have a cellular organization
b. Contain similar chemical
c. Use energy
d. Respond to their surroundings
e. Grow and develop
f. Reproduce
3. cells
4. true
5. false
6. water
7. proteins
8. true
9. stimulus
10. Stimulus: Answers might include the sound of a car horn.
Response: Answers might include jumping when startled.
11. Development is the process of change that occurs during an organism’s life to produce a more
complex organism.
12. reproduce
Life Comes From Life (pp. 36-37)
13. false
14. spontaneous generation
15. He showed that flies do not spontaneously arise from decaying meat.
16. manipulated variable
17. false
The Needs of Living Things (pp. 38-40)
18. Water; Food; Living space; Stable internal conditions
19. true
20. autotrophs; heterotrophs
21. false
22. Organisms need water to obtain chemicals from their surroundings, break down food, grow, move
substances within their bodies, and reproduce.
23. true
24. Conditions must be just right for cells to function.