Levels of Life

Which of the following is the correct order of organization in living things from most basic (simple) to most complex?

• a.  Organism, cell, tissue, organ, organ system
• a.  Organ system, organ, tissue, cell, organism
• a.  Cell, tissue, organ, organ system, organism
• a.  Cell, organ, tissue, organ, organism, organ system

When a group of organs work together to perform a particular function they create a/an

• organ system
• organism
• tissue
• organ

The smallest level of organization of life in an organism

• tissue
• cell
• organ
• organ system

What do you have when organ systems work together?

• organs
• organism
• cells
• tissue

The digestive system includes the stomach. What level is the stomach?

• organ
• tissue
• cell
• organism

This is an example of

• Cell

• Tissue

• Organ

• Organ System

A group of cells that have similar functions? Examples are nervous, epithelial, muscle, and connective

• Cells

• Organs

• Tissue

• Atoms

This system allows things to move within the body.

• muscular

• digestive

• circulatory

• respiratory

In living organisms, leaves and heart are examples of?

• cells

• organism

• organ system

• organ

What is the difference between a cell and a tissue?

• cell is basic unit of life; tissue is group of cells that work as one
• cell is group of tissues; tissue is basic unit of life
• cell is basic unit of life; tissue is groups of different cells
• cell is group of organs; tissue is group of different cells