SmithLifeScience                                   Name __________________ Period _____

Reading Study Guide  Chapter 2 Living Things
2-1 What is Life?  (pp.34-40)

The Characteristics of Living Things (p.34-35)

1. What is an organism? ____________________________________

2-7.  List six characteristics that all living things share.
     a. ______________________________________________________________
     b. ______________________________________________________________
     c. ______________________________________________________________
     d. ______________________________________________________________
     e. ______________________________________________________________
     f. ______________________________________________________________

8. All organisms are made of small building blocks called ________________.

9. Unicellular organisms are composed of              one cell           many cells

10. Organisms composed of many cells are called _________________.

11. Most cells are so small you need a ____________________ to see them.

12. Circle the letter of the most abundant chemical found in cells.
     a.  Nucleic Acids
     b.  Water
     c.  Carbohydrates
     d.  Proteins

13. A ____________ is a change in an organism's surroundings that causes the organism
     to react.

14. A _____________ is a reaction to a stimulus.

15-16.  Identify as a stimulus or a response

     A blister appears __________________

     You burn your finger ________________________

17. The process of becoming larger is called ______________________.

18. What is development?
____________________________________________________________________
____________________________________________________________________

19. All organisms can _____________________, or produce more of their own kind.

Life Comes From Life (p.36-37)

20. What is spontaneous generation? ______________________________________
__________________________________________________________________

21. Francesco Redi designed an experiment to show that ________________________

22. The ______________  _______________ is the factor a scientist changes in an
      experiment.

23. Maggots appeared on the meat in the jar that was ___________________.

24. When Pasteur boiled the broth what happened to the bacteria in the flask? ______

25. The experiments of Redi and Pasteur convinced people that living things do not arise
      from _________________  ________________.

The Needs of Living Things (p.38-40)

26-29 Complete this Graphic Organizer to show what living things need to survive.

30. Organisms that make their own food are called                  heterotrophs           autotrophs

31. Organisms that cannot make their own food are called       autotrophs              heterotrophs

Frogs and Rainfall Graph (Look at the graph on p.39)

32. Does the graph tell which year each frog count was made?          Yes          No

33. The frog count was the lowest when the spring rainfall was           5cm      20cm

34. What was the greatest number of frogs that the scientist recorded? _______

35. What is the relationship between the number of frogs and the amount of spring rain?
     a.  The greater the rainfall, the smaller number of frogs.
     b. The greater the rainfall, the larger number of frogs.
     c. The amount of rainfall did not effect the number of frogs.

Page 40
36. What is homeostasis? _______________________________________________
__________________________________________________________________

37. How does a barnacle keep water in its cells during low tide? __________________

Assessment 2-1

38. A bird sitting on a tree branch flies away as you walk by.
      Is this a stimulus or a response to your walking by? _____________________

39-42. Describe how your pet, or a friend's pet, meets its need as a living thing.