<p>So I signed up for the SAT subject test Biology E/M and I wanted to take the molecular part of the test, but when I was registering I wasn't the given the chance to specify which test I wanted. When will I be able to tell Collegeboard which test I want to take?</p>
<p>Test has 100 questions total.
All test takers will answer the first 60.
E students should answer 61 - 80 in addition to the first 60.
M takers should answer 81 - 100.</p>
<p>Ok. That makes sense. Thank you teteatete.</p>