Give 3 examples of levels of biological organization that are smaller than a cell.

Give 3 examples of levels of biological organization that are smaller than a multicellular organism, but larger than an organelle.

A body part usually composed of several tissues grouped together into a structural and functional unit

(a)  

A chemical subunit consisting of two or more atoms joined together by chemical bonds

(a)  

The smallest unit of matter, not divisible by ordinary chemical means

(a)  

A(n) (a)   describes two or more interacting populations of different species which inhabit a given area.

Organisms living with other organisms, plus their physical surroundings

(a)  

A well-defined part of a cell, often bounded by a membrane, and having a specific function?

(a)  

An individual living entity which carries out all life functions?

(a)  

A microscopic structural and functional unit of most living things, consisting of a cytoplasm surrounded by a limiting membrane?

(a)  

A group of cells and intercellular substances functioning together in a specialized activity

(a)