Lesson 1.3: Levels of Organization (STEELS)

Multiple Choice

How do cells in multicellular organisms become specialized?

• By reading different genes to make different proteins

• By having different DNA in each cell

• By dividing into identical copies

• By losing their ability to function

Multiple Select

All of following are characteristics of multicellular organisms EXCEPT:

• Specialized cells

• Cells depend on each other

• Single cell manages all activities

• Multiple systems interacting together

Labelling

Label the diagram with the correct level of biological organization.

Drag labels to their correct position on the image

organ system

organ

cell

organism

tissue

Fill in the Blank

The smallest unit of life is the ___.

Multiple Choice

Which type of tissue is responsible for carrying messages throughout the body?

• Blood tissue

• Nervous tissue

• Muscle tissue

• Connective tissue

Multiple Choice

What is the main function of the lungs?

• Pumping blood

• Gas exchange

• Digesting food

• Transporting nutrients

Multiple Choice

Which organ system is responsible for breaking down food and absorbing nutrients?

• Cardiovascular system

• Respiratory system

• Digestive system

• Nervous system

Fill in the Blank

An organism is an individual ___ thing.

Match

Match the levels of biological organization with the correct picture.

cell

tissue

organ

organ system

organism

• cell

• tissue

• organ

• organ system

• organism

Open Ended

Imagine a fox chasing a rabbit. Pick one of the following systems and explain the role it plays in the rabbit's response:

1 - Nervous System

2 - Circulatory System

3- Muscular System

Open Ended

The diagram is a model of some of the ways human body systems interact with each other. List one thing the model shows.