| A | B |
|---|
| cell | This is the smallest structural unit capable of life. |
| metabolism | This is the sum of all of the chemical reactions carried out in an organism. |
| heredity | This is the passing of traits from parent to offspring. |
| mutation | This is a change in the DNA of a gene. |
| natural selection | This is the process in which organisms with favorable genes are more likely to survive. |
| Evolution | This is the change in the inherited traits of a species over time. |
| hypothesis | A _____ is an explanation for an observation that can be tested by additional observations or experimentation. |
| prediction | A _____ is the outcome that is expected if a hypothesis is correct. |
| independent variable | In an experiment, the factor that is varied is the _____ |
| dependent variable | In an experiment,the factor that is measured is the _____. |
| theory | This is a set of related hypotheses that have been tested and confirmed many times. |
| observation | This is the act of noting or perceiving objects or events using the senses. |
| cystic fibrosis | This is a fatal disorder caused by a defective gene and results in the excretion of excessive amounts of mucus. |
| genes | _____ are sets of inherited instructions for making proteins. |
| biology | the study of living things |
| control group | receives no experimental treatment |
| homeostasis | state of constant internal conditions |
| species | a group of organisms that are genetically similar and can produce fertile offspring |
| reproduction | organisms make more of their own kind |
| ecology | the study of the interactions of living organisms |
| experiment | planned procedure to test a hypothesis |
| HIV | virus that causes AIDS |
| cancer | a breakdown of the mechanism that controls cell division |
| pH | relative measure of the hydrogen ion concentration within a solution |
