Levels of Organization

Question 1

extensive geographical area characterized by similar plant communities (ie. pond, desert)

Answer 1

biome

Question 2

a community together with its nonliving surroundings

Answer 2

ecosystem

Question 3

two or more populations of different species living and interacting in the same area

Answer 3

community

Question 4

members of one species inhabiting the same area (at the same time)

Answer 4

population

Question 5

very similar, potentially interbreeding organisms

Answer 5

species

Question 6

an individual living thing composed of many cells

Answer 6

multicellular organism

Question 7

two or more organs working together in the execution of a specific bodily function

Answer 7

organ system

Question 8

a structure within an organism usually composed of several tissue types that form a functional unit

Answer 8

organ

Question 9

a group of similar cells that perform a specific function

Answer 9

tissue

Question 10

the smallest unit of life

Answer 10

cell

Question 11

a structure within a cell that performs a specific function

Answer 11

organelle

Question 12

a combination of atoms

Answer 12

molecule

Question 13

the smallest particle of an element that retains the properties of that element

Answer 13

atom

Question 14

particles that make up an atom

Answer 14

subatomic particle

Question 15

particles that make up protons and neutrons

Answer 15

quark

Question 16

that part of Earth inhabited by living organisms; includes both the living and nonliving components

Answer 16

biosphere