See also special notes below regarding modem access.
We do not recommend printing out the tutorial units. If you print the tutorial units, you will lose the hypertext capability, and you will get huge paper copies with a lot of blank space due to the spacing we have had to insert between questions and answers.
For each question, try to formulate an answer to the question before reading the answer choices. Next, try to pick the best answer by clicking on the highlighted portion of the question. A response with an explanation will appear. Then, look at the explanations for the other answers; all of them will provide instruction.
Use the links, do not scroll.
Unless you are instructed otherwise, you can skip the topics not covered in lecture.
If you have trouble with several links to answers, e.g., you are kicked back to the start of the unit rather than going to an answer, you may have a the defective download program. To correct this, you need to reload the PBT replacing the defective copy stored in your computer's memory. In Netscape, there should be a RELOAD button on the second tool bar down from the top.
Usually, web browsers have a moving symbol to indicate that downloading is continuing; in Netscape, this is a box with an N located in the upper right of your screen. If you try to use the tutorial before the downloading has been completed, the download will stop, you will have an incomplete program and many links will not work, see description and repair procedure above.
You can access the PBT through any of the UM dial in phone numbers or even through commercial online services, but you must sign in through a UM server. Access is restricted to the UM domain.
If you wish to access the PBT directly rather than going through the Bio 230 home page, you can use use the folowing URL:
Some of the questions in this tutorial were modified from Life: Science of Biology, 3rd ed. (1992) or 4th ed. (1995) by W. K. Purves, G. H. Orians, and H. C. Heller. Complete citation information is available. Some questions are used from old Biology 154 exams written by a variety of faculty, and many have been composed specifically for this tutorial.