Advertisement Upgrade to remove ads

Chapter 1 The Science Of Biology, 1-3 Studying Life


Science that seeks to understand the living world


Collection of living matter enclosed by a barrier that separates the cell from it's surroundings; basic unit of all forms of life

Sexual Reproduction

Process by which two cels from different parents unite to produce the first cell of a new organism

Asexual Reproduction

Process by which a single parent reproduces by itself


Set of chemical reactions through which an organism builds up or breaks down materials as it carries out it's life processes


A signal to which an organism responds; any kind of detectable signal that carries information


Process by which organisms maintain a relatively stable internal environment


Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording