Biology started with the interest in nature by mankind several centuries or even millenia ago. There is no exact date of
Origin but Greeks and Romans were interested in explaining the world around them (physics), the behaviour of several compounds( alchemy/chemistry) or the behaviour of animals and nature (biology).
The Roman poet Lucretius wrote a work De rerum Natura about nature. Archimedes was known for his inventions and invention of
The Law of Archimedes.
The
Origin of Biology is not chemistry. befor echemistry was involved many biologists went out on the field to study plants nd animals. Biology was only incorporated during the last century.
btw: your physics teacher is not TR00