Why do you think it is important that biologists have a good understanding of chemistry?
It's really Biochemistry.
And to my surprise, to have a good understanding of most Biology concepts, it's essential to understand Chemistry. And hence, the course is really a BioChemistry course.
While Biology is the study of living things, living things themselves are made up of chemical composition. That being said, our survival is dependant on the reactions taking place inside and outside the body. Hence, to understand living things, biologists needs a good understanding of chemistry.