I doubt it will be helpful.
In my undergrad, I had the option of taking a two course biochemistry sequence through the Chemistry department or one course through the Biology department.
I took the one course with the Bio department 2+ years ago in undergrad, and was fine in Biochemistry last term in dental school. You definitely don't need two terms.
At my dental school, everything was taught from the ground up (including memorizing the amino acids and their structures, etc.) and I think an undergrad course would only be useful for providing you with an introduction to biochemistry before rapidly reaching the point of diminishing returns.
Bottom line: if you're interested in other courses, take them and do the one semester of biochemistry in college. You'll be fine.