Animal dissections Watch
Given that Biochemistry has an especially strong research orientation compared to most Bioscience courses, if this an issue for you then you might want to reflect on your long term goals and how this particular degree fits into them, given you heavily limit the roles you could potentially pursue depending on the scope of your objection to animal research.
If you just want to learn about chemistry perhaps in some way related to biological systems, then you may want to consider changing to a Chemistry degree. A Biochemistry degree is in essence a degree in fundamental biology supported by core chemistry knowledge, not a degree in chemicals that relate to biology. As such the "bigger picture" is important to Biochemistry as it is the context in which Biochemists work.