Hello student ,

Yes , Bachelor of science in biotechnology include chemistry . If you want to pursue this course then you have to study physics , chemistry and biology covering microbiology, biochemistry, immunology, bio informatics, enzymology, pharmaceutic related subjects  .Giving more focus on chemistry and biology that involve zoology botany. Mathematics is also essential for technical studies . As a science student u have to be aware of mathematics and it's basic fundamentals to go far.

Hope it will help you !