<P> The SAT Subject Test in Biology is the name of a one - hour multiple choice test given on biology by The College Board . A student chooses whether to take the test depending upon college entrance requirements for the schools in which the student is planning to apply . Until 1994, the SAT Subject Tests were known as Achievement Tests; and from 1995 until January 2005, they were known as SAT IIs . Of all SAT subject tests, the Biology E / M test is the only SAT II that allows the test taker a choice between the ecological or molecular tests . A set of 60 questions is taken by all test takers for Biology and a choice of 20 questions is allowed between either the E or M tests . This test is graded on a scale between 200 and 800 . The average for Molecular is 630 while Ecological is 591 . </P> <P> This test has 80 multiple - choice questions that are to be answered in one hour . All questions have five answer choices . Students receive one point for each correct answer, lose 1⁄4 of a point for each incorrect answer, and receive 0 points for questions left blank . The student's score is based entirely on his or her performance in answering the multiple - choice questions . </P>

How long is the bio sat subject test