Jun 25, 2002 ... Dear David: That's a very good question, and we applaud your class for its inquisitiveness. We knew there were a lot of cells in the human body ... ask.yahoo.com |
This question is a bit ambiguous in the sense of what you mean by "type." You can consider that there are two different types of cells which are called ... answers.yahoo.com |
Nov 28, 2011 ... The other day, Amanda, who is currently teaching AP Biology, noted that among the various sources she had at hand, including a couple of ... scienceblogs.com |