If you're quite certain you won't go for engineering then I don't see the benefits of taking physics.

Btw plenty of people went for engineering at university despite not taking physics for A-Level/STPM. Most universities don't list Physics as a compulsory subject for admission to engineering classes, although it certainly isn't a smart option as you'll have a very steep learning curve to go. Many of my friends who studied Biology in STPM but failed to get their desired courses from UPU and were offered engineering instead, accepted and are working in engineering industries now.

Not saying is a good option, just saying it isn't a dead end....

If your preference leans strongly towards Biology, just stick to Bio+Chem+Maths.