Identify and describe the characteristics of life.

Questions require complete answers which may be single words, short answers, multiple sentences, or other type of answer identified in the question. The BEST possible answer is required for each question based on the material presented in the text, the course Content area or weekly Discussions.  If a non-text reference is used, it must be properly cited; material from the text does not require citation. Make sure you cite where you got the answer because points will be deducted if not

BIOL 110

Worksheet 1

1. Identify and describe the characteristics of life.

2. Define a cell.

3. Why is evolution considered to be an accepted and unifying theme of biology?

4. Explain the purpose of taxonomy.

5. How do natural selection and mutations contribute to evolutionary changes?

6. Explain why evolution is considered to be the unifying concept of biology.

7. Select the correct term for the blank. Species placed within one genus share (General/specific) ______ characteristics but species placed in the same kingdoms share (General/specific) __________ characteristics.

8. Why is it important to use scientific names when discussing an organism such as Acer rubrum?

9. What is the scientific method and why it is important?

10. Identify and explain the steps of the scientific method.

11. Select the proper term for each blank. When following the scientific method, a person would use (inductive/deductive) ________ reasoning to form an hypothesis and (inductive/deductive) __________ reasoning when testing an hypothesis.

12. In the following experiment which is the dependent variable and which is the independent variable?

Two corn fields were selected for a test. Field A was treated with fertilizer A that contained a significant amount of nitrogen; and Field B was treated with a fertilizer that was the same as fertilizer A, but lacked nitrogen. Both fields received the same amount of sunlight, water and had identical soil composition. When harvested, Field A produced 25 bushels per acre and Field B produced 5 bushels per acre.

13. Define metabolism.

14. What is the meaning of homeostasis?

15. Identify the basic taxa of organisms from least to most inclusive.

16. Identify the kingdoms of the domain Eukarya and explain their differences.

17. Define biodiversity.

18. In a scientific experiment what is the difference between the control group and the experimental group.

19. Define an element and identify its basic structural component.

20. Why does electron movement between in energy levels affect chemical energy of organisms?

21. Identify and explain the types of chemical bonds.

22. Explain the difference between atomic number and atomic mass.

23. List the six main elements that make up the weight of organisms.

24. Explain why atoms have a neutral charge whereas ions have either a positive or negative charge.

25. Explain the difference between polar and nonpolar covalent bonds.

26. Explain hydrogen bonding.

27. Explain the differences between acids and bases.

28. What does the pH scale indicate about a substance?

29. Identify the number of atoms of each type in the following molecule: CH3.

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