Chapter 1- The Science of Biology Key Concepts

Question 0

Whenever possible, a __________ should be tested by an __________ in which only one ________ is changed at a time. All other _________ should be kept unchanged, or controlled

Answer 0

Hypothesis; experiment; variable; variables

Question 1

The goal of science is to ___________ and __________ the natural world, to _______ events in the natural world, and to use those ____________ to make useful __________

Answer 1

Investigate; understand; explain; explanations; predictions

Question 2

In _______ the word ______ applies to a ___________ explanation that _______ a broad range of ____________

Answer 2

Science; theory; well-tested; unifies; observations

Question 3

Living things share what characteristics?

Answer 3

1. Made of units called cells
2. Reproduce
3. Based on a universal genetic code
4. Grow and develop
5. Obtain and use material and energy
6. Respond to their environment
7. Maintain a stable internal environment
8. As a group; change over time

Question 4

What are the levels at which life can be studied (smallest to largest)

Answer 4

Molecules
Cells
Groups of cells
Organisms
Populations
Communities
Ecosystem
Biosphere

Question 5

Most scientists use the ______ system when __________ data and ___________ experiments

Answer 5

Metric; collecting; performing

Question 6

_____ microscopes produce _________ images by focusing visible light rays. ________ microscopes produce __________ images by focusing beams of electrons

Answer 6

Light; magnified; electron; magnified