Students of advanced life science courses at Beverly Hills High School, California, are able to approximate a wide variety of life process experiments through use of computer simulations. Students are taught to use the BASIC language and to execute programs on the Hewlett-Packard 2000 Access series. Computer programs are used to enhance instruction by providing: (1) unit reviews; (2) self-tests; (3) analyses of laboratory data; and (4) simulations of life processes. One program, SPHOTO, enables students to observe and quantitatively analyze the process of photosynthesis. A sample SPHOTO dialog is provided. (EMH)