Quiz: the Scientific Method and Life

Quiz: The Scientific Method and Life

Name Date Per

I.Using Science Skills

Identify and complete the steps of the procedure below in the appropriate boxes. (10 points)

II.Completion

Fill in the line to complete each statement. (10 points)

6. A is the basic unit of structure and function of all living things.

1. The idea that life can spring from non-living matter is called

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1. In Redi’s experiment, the variable was .
2. The ability to maintain a stable internal environment, where your body goes back to “normal”, is known as .
3. A plant bending toward light is an example of an organism responding to a(n) .

1. Multiple Choice

Write the letter of the correct answer on the line at the left. (10 points)

11. Which gas was not part of the Earth’s atmosphere 3.6 billion years ago?

a. methaneb. nitrogen

c. oxygend. water vapor

12. In Pasteur’s experiment, he was able to conclude that

a. decaying meat did not produce maggots.

b. bacteria do not spontaneously arise from the broth.

c. flies could not lay eggs on the meat in the closed jar.

d. new bacteria grew only in the boiled broth.

13. In the scientific method the step that involves an educated guess is called

a. the purposeb. the conclusion

c. the hypothesisd. the analysis

14. An organism that is composed of many cells is called a(n)

a. multicellular organismb. unicellular organism

c. variable organismd. fossil

15. All living things

a. have cellular organizationb. have similar chemicals

c. must grow and reproduced. all of the above

1. Essay

Answer the following questions in the space provided. (10 points)

1. Explain the purpose of a control in a controlled experiment.

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Extra Credit (5 points)

• List a possible hypothesis Redi or Pasteur could have used for their experiment. List only one.

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