That looks like it was taken from the University of Florida's COM website FAQ...
http://www.med.ufl.edu/oea/admiss/site/FAQ.shtml#4
From the same school's website...
Basic Science Requirements: The minimum science admissions requirements include basic introductory courses and laboratories in the following subjects:
Biology - 8 semester hours (12 quarter hours/lab)
General (Inorganic) Chemistry - 8 semester hours (12 quarter hours)
Organic Chemistry - 4 semester hours (2-3 quarter hours)
Biochemistry - 4 semester hours (6 quarter hours)
Physics - 8 semester hours (12 quarter hours)
A med school that requires biochem. Cool!
They've come right out and said biochem is a must; I think that my school says biochem or genetics or physiology (or something like that). There is a movement out there to do what UF has done, so please enlighten me to other schools that have gone this route.
For the class of 2008 (the newest MSAR I have), I'm seeing that they only took Florida residents. I wonder how they verify labs for people who went oos for undergrad. Do they have to call the school? OP, if you're not from Florida, I wouldn't treat this advice as useful to you. Look at the requirements of schools that you're applying to specifically.
After looking at the actual link, it's clear to me that what awk is quoting is a rule exception for students whose biochem lecture was not supplemented by a lab. UF probably made the requirement 4 hours to try to force 'em to take a lab since such lectures are often 3 hours, but from the actual requirements I can't see how they'd not allow two lecture classes (say 6 hours of biochem lecture) in place of the lab, which I'd still say would be more valuable than taking the lab.