Organization of Life

Question 1

What are the levels of organization that exist within a multicellular organism?

Answer 1

Cells, tissues, organs, and organ systems

Question 2

List those levels of organization in order from smallest to largest.

Answer 2

Cells, tissues, organs, and organ systems

Question 3

What is the smallest unit of life?

Answer 3

A Cell

Question 4

List 3 human body systems and 2 organs that belong in each

Answer 4

Digestive system: stomach, small intestine
Respiratory system: Lungs, trachea
Circulatory system: Heart, blood vessels

Question 5

What is the relationship between structure and function? At which levels of organization is this relationship seen?

Answer 5

Depending on how something is built (structured) determines how it works and what it does (function). These are seen at molecular level, cellular level, tissue and organ level, and organism level.

Question 6

What is a group of the same cells working together called?

Answer 6

Tissue