microbiology vs. biology

microbiology

[mahy-kroh-bahy-ol-uh-jee] / ˌmaɪ kroʊ baɪˈɒl ə dʒi /

noun

the branch of biology dealing with the structure, function, uses, and modes of existence of microscopic organisms.

biology

[bahy-ol-uh-jee] / baɪˈɒl ə dʒi /

the science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior.
the living organisms of a region.

the biology of Pennsylvania.
the biological phenomena characteristic of an organism or a group of organisms.

She is studying the biology of worms, especially in regard to their reproductive behavior.