Levels of matter organization

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

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

Organisms living with other organisms, plus their physical surroundings

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

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

Select 3 examples of levels of biological organization that include the interaction between different species of organisms

• Ecosystem, community, population

• Community, ecosystem, biosphere

• Population, cell, tissue

• Tissue, community, ecosystem

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

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

The group of organs is called...

Three examples of levels of organization smaller than a cell

• Atom, molecule, organelle

• Atom, cell, tissue

• Organ, molecule, proton

• Neutron, molecule, tissue