Hierarchy of Life

Question 1

What is the body’s structural hierarchy?

Answer 1

Organism, Organ System, Organ, Tissue, Cell, Organelle, Macromolecule, Molecule, Atoms, Matter

Question 2

Organism

Answer 2

A single, complete individual

Question 3

Organ system

Answer 3

A group of organs with a collective function

Question 4

Organ

Answer 4

A structure composed of two or more tissues that work together to carry out a function

Question 5

Tissue

Answer 5

A mass of similar cells and cell products that forms a discrete region of an organ and performs a specific function

Question 6

Cells

Answer 6

The smallest units of an organism that carry out all the basic functions of life

Question 7

Organelles

Answer 7

Microscopic structures in a cell that carry out its individual functions.

Question 8

Macromolecules

Answer 8

Large molecules

Question 9

Molecules

Answer 9

A particle that composed of at least two atoms

Question 10

Atoms

Answer 10

Smallest particles with unique chemical identities

Question 11

Matter

Answer 11

Anything which occupies space and has mass