Honors Biology - Unit 1 Test: Chapter 1

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21 Terms

1
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Why are ideas in science constantly changing?

scientists are constantly testing, debating, and revising scientific explanations

2
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Science deals only with the ___ world.

natural

3
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What are observations?

information gathered by your senses

4
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What are inferences?

logical interpretations based on what is already known

5
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What is a hypothesis?

a tentative explanation that can be tested

6
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What is an independent variable?

variable that is manipulated

7
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What is a dependent variable?

variable that is measured

8
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What is a constant variable?

variable that stays the same

9
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What is qualitative data?

data that describes characteristics that can't be measured

10
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What is quantitative data?

data that involves counting or measuring

11
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What is a theory?

a well-tested explanation for a range of phenomena

12
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What is bias?

showing preference towards toward a particular viewpoint.

13
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Living things are made of self-contained units called...

cells

14
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Which type of reproduction involves two parents?

sexual reproduction

15
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Which type of reproduction involves only one parent?

asexual reproduction

16
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The directions for inheritance are carried on what molecule?

DNA

17
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What are the characteristics of life?

Made of cells, reproduce, have DNA, grow and develop, use materials and energy (metabolism), respond to their environment, maintain a stable internal environment, grow and adapt over time

18
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What is metabolism?

the combination of all chemical reactions of life processes

19
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What is a stimulus?

a signal to which an organism responds

20
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What is homeostasis?

maintaining a stable internal environment

21
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What is evolution?

a group of organism's ability to change over time