Info:
Well, I do not know where you got that information from, but, it is true. Physics is a branch of science that studies something that is quite far from biology. Chemistry though, shares a lot of common studies though, and many times they depend on each other.
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Comparison:
Physics: studies the behaviour of the universe, to keep it simple.
Chemistry: it's the study of matter and their properties/interactions.
Biology: studies life.
As you can see, the studies of physics cannot be used frequently while studying biology. But, the study of matter can really be helpful to the study of life because they're really related.
Hope it helped,
BioTeacher101