1. Intro to Biology Holt-McDougal Biology
Biology Ch 1 Test Review
Intro to Biology
Holt-McDougal Biology

2. Q1
List the characteristics of life that all living things share.

3. A1 List the characteristics of life that all living things share.
-made of cells
Need energy (metabolism)
Homeostasis
Adaptation
Respond to Environment
Grow & reproduce

4. Q 2
What is a hypothesis?

5. A 2
What is a hypothesis?
educated guess or testable explanation of an observation

6. Q3
List the steps of the Scientific Method or Scientific Investigation in order.

7. A3
List the steps of the Scientific Method or Scientific Investigation in order.
-Observations
-Questions
-Hypothesis
-Controlled Experiment
-Analysis of results
-Conclusions

8. Q4
Which variable does the experimenter change in an experiment?

9. A4 Which variable does the experimenter change in an experiment?
-independent variable

10. Q5
Which variable is measured in an experiment?

11. A5
Which variable is measured in an experiment?
DEPENDENT VARIABLE

12. Q6
Describe the difference between a hypothesis & a scientific theory.

13. A6 Describe the difference between a hypothesis & a scientific theory.
- Hypothesis – possible explanation or educated guess.
Theory- broad explanation based on repeated testing of hypotheses.

14. Q 7
How many variables should be isolated & tested during an experiment?

15. A7
How many variables should be isolated & tested during an experiment?
One variable (independent)

16. Q8
What is the basic unit of length in the metric system?

17. A8
What is the basic unit of length in the metric system?
Meter

18. Q9
What is the basic unit of mass in the metric system?

19. A9
What is the basic unit of mass in the metric system?
-gram

20. Q10 Be able to convert between units in the metric system.
- How many meters are in 1.6 km?

21. A10 Be able to convert between units in the metric system.
- How many meters are in 1.6 km?
1.6 km = 1600 meters

22. Q11
Define the term “Biology”.

23. A11
Biology = The scientific study of life.

24. Q12
What is the term for the area where all life exists?

25. A12
What is the term for the area where all life exists?
- Biosphere

26. Q13
What components make up an ecosystem?

27. What components make up an ecosystem?
the living organisms (biotic) & nonliving things (abiotic) in a particular area.

28. Q14
Define “community” and give an example.

29. A14 Define “community” and give an example.
- all the groups of DIFFERENT SPECIES of organisms in an area.
Ex- all the different plants & animals in a forest.

30. Q15
Define “Population” and give an example.

31. A15 Define “Population” and give an example.
- all the SINGLE SPECIES in an area at one time.
Example- all the maple trees in a forest.

32. Q16
What term describes any individual living thing made of one or more cells?

33. A16
What term describes any individual living thing made of one or more cells?
- Organism

34. Q17
Define the term “homeostasis”.

35. A17 Define the term “homeostasis”
-Maintaining constant internal conditions.

36. Q18
True or False: “only individuals that belong to the same species are able to reproduce by interbreeding”.

37. A 18
True or False: “only individuals that belong to the same species are able to reproduce by interbreeding”.
-TRUE

38. Q19
Organisms use energy for chemical processes. Together these processes are called _______
A) negative feedback
B) metabolism
C) Adaptation
D) Homeostasis
E) ecosystem

39. A19
Organisms use energy for chemical processes. Together these processes are called ________ B) metabolism

40. Q20
What is a “pathogen”?

41. A20
What is a “pathogen”?
Disease-causing agent

42. Q21
Tell the difference between Quantitative vs. Qualitative data.

43. a21 Tell the difference between Quantitative vs. Qualitative data.
Quantitative involves numbers
Qualitative involves descriptions from observations.

44. Q22
In an experiment, what group recieves no experimental treatment?

45. A22 In an experiment, what group recieves no experimental treatment?
THE CONTROL GROUP

46. Q23 In an experiment, what group has one variable changed?
A) Experimental group
B) Control group
C) Factorial group
D) Hypothesis

47. A23 In an experiment, what group has one variable changed?
A- EXPERIMENTAL GROUP

48. Case study
CASE STUDY: A scientist is testing the effects of a new conditioner on how well it removes tangles from hair. Group A is given the new conditioner, group B is not given any conditioner. The hair is combed to measure how well tangles are removed.

49. Q 24
24) Which group is the control group?

50. A24
24) Which group is the control group?
- Group B (no conditioner)

51. Q25
Which group is the experimental group?

52. A25
Which group is the experimental group?
Group A (new conditioner)

53. A26
What is the dependent variable?

54. A 26
What is the dependent variable?
- how well tangles are removed.

55. Q27
What is the independent variable?

56. A27
Independent variable= conditioner

57. Q28
What would some constants in this experiment?

58. A28 What would some constants in this experiment?
- Same type of hair, same length of hair, same amount of water used.