Chapter 1

The smallest unit of life is the ___________ .

_______________ is a state in which conditions in the internal environment are being maintained within ranges that individual cells can tolerate.

Bacteria, Archaea, and Eukarya are three ____________ .

DNA ____________ . a. contains instructions for building proteins b. undergoes mutation c. is transmitted from parents to offspring d. all of the above

______________ is the transmission of DNA to offspring. a. Reproduction b. Development c. Homeostasis d. Inheritance

A trait is ______________ if it improves an organism's chances to survive and reproduce in its environment.

A control group is _____________ . a. the standard against which experimental groups can be compared b. the experiment that gives conclusive results c. both a and b

Match the terms with the most suitable description. a. statement of what a hypothesis leads you to expect to see in nature b. testable explanation c. occurs at a higher organizational level in nature, not at levels below it d. time-tested hypothesis that can explain a range of observations e. differential survival and reproduction among individuals of a population that vary in details of shared traits emergen property natural selection scientific theory hypothesis prediction