Levels of Organization

Question 1

all materials, including those the make up the human body, are compose of

Answer 1

chemicals

Question 2

Microscopic particles that make up chemicals

Answer 2

atoms

Question 3

atoms join to form

Answer 3

molecules

Question 4

small molecules can combine in complex ways to form

Answer 4

macromolecules

Question 5

basic unit of structure and function

Answer 5

cell

Question 6

cells vary in size, shape, and specialized function but all share certain

Answer 6

characteristics

Question 7

all cells of humans and other complex organisms contain structures called ____ that carry out specific activities

Answer 7

organelles

Question 8

Composed of aggregates of macromolecules, such as proteins, carbs, lipids, and nucleic acids

Answer 8

organelles

Question 9

a group of cells organized into layers or other structures that have common functions

Answer 9

tissue

Question 10

group of tissues that interact form

Answer 10

organs

Question 11

complex structures with specialized functions - and groups of organs that function closely together comprise

Answer 11

organ systems

Question 12

organ systems make up an

Answer 12

organism

Question 13

body parts can be described in terms of different levels of organization, such as

Answer 13

the atomic level, the molecular level, and the cellular level

Question 14

How does the human body illustrate levels of organization?

Answer 14

It is composed of parts within parts, which vary in complexity

Question 15

How do body parts at different levels of organization vary in complexity?

Answer 15

Atoms are less complex than molecules; molecules are less complex than organelles; tissues are less complex than organs; etc.