Biology Chapter 1: Homework

Biology Chapter 1: Homework

Answer questions on a separate sheet of paper. Use complete sentences. Answers that cannot be read will be counted as incorrect.

Homework 1-1

1. What does science study? Define in your own words.

2. Why should a scientist formulate a hypothesis?

3. What is the main difference between qualitative and quantitative observations? Is one more important than the other?

4. Every laboratory report should have the following steps. Define each in your own words.

A. Question

B. Hypothesis

C. Materials

D. Procedure

E. Observations/Data

F. Conclusion

Homework 1-2

1. Why is spontaneous generation still considered a hypothesis?

2. Describe Francesco Redi’s experiment. What did he conclude?

3. What are “animalcules”? How did they get their name?

4. Describe Louis Pasteur’s experiment. How Pasteur’s experiment solve the problems associated with Needham’s and Spallanzani’s experiments?

5. How does a hypothesis differ from a theory?

Homework 1-3

1. List the characteristics of living things. Briefly describe each.

2. Define two types of reproduction and name an organism that reproduces by that method.

3. What is the method of inheritance in living organisms?

4. Define metabolism and homeostasis.

5. What are the levels of organization from smallest to largest?

Homework 1-4

1. What is the international unit of measurement? What is the unit of measurement for length? Mass? Volume? Temperature?

2. What are two types of microscopes and how do they differ?

3. What are cell cultures and why are they important?

4. How does cell fractionation work?

5. Read the safety rules in Appendix B, then list ten and explain why they are important.

Biology Chapter 1: Study Guide

To study properly for the Chapter 1 Test, students should study their lecture notes, reading notes homework, worksheets, and then review any sections in the textbook.

Section 1

·  Know the vocabulary terms

Science

Observation

Data

Inference

Hypothesis

·  Know the difference between qualitative and quantitative observations and examples of each

·  Know why hypotheses are important and what rules they must follow

·  Know the steps in the scientific methods and definitions for each term

Question

Hypothesis

Variables

Materials

Procedure

Observations/Data

Conclusion/Discussion

Section 2

·  Know the vocabulary terms

Spontaneous generation

Controlled experiment

Manipulated variable

Responding variable

Theory

·  Be able to describe the experiments of Redi, Needham, Van Leeuwenhoek, Spallanzani and Pasteur and what their conclusions did for the progression of science

·  Know some of the ethical and moral concerns in designing an experiment

·  Know why competing theories are important

Section 3

·  Know the vocabulary terms

Biology

Cell

Sexual reproduction

Asexual reproduction

Metabolism

Stimulus

Homeostasis

Evolution

·  Be able to list all 8 characteristics that are exhibited by living things

·  Know the differences between unicellular and multicellular organisms

·  Know what DNA is and its importance

·  Know why a body tries to main homeostasis and an example of how the body does this

·  Know the branches of biology

·  Know the levels of organization

Section 4

·  Know the vocabulary terms

Metric system

Microscope

Compound light microscope

Electron microscope

Cell fractionation

Cell culture

·  Be able to give the SI unit for length, mass, volume and temperature

·  Know the SI prefixes (centi-, deka- etc) and be able to convert between them

·  Know the similarities and differences between the light and electron microscopes and between TEM and SEM

·  Know the purpose of cell cultures and cell fractionations

·  Know the safety rules from Appendix B