Levels of Organization
Homeostasis
Organ System Functions
Organelles & Organ Systems
Digestive System
100

The basic building block of life.

What is a cell?

100

An organism's ability to maintain steady internal conditions when outside conditions change.

What is homeostasis?

100

Responsible for the removal of waste from the body. 

What is the excretory system?

100

The cell membrane and this organ system both provide protection. They both act as a barrier to control what comes in and what goes out.

What is the integumentary system?

100

Digestion begins here.

What is the mouth?

200

The level of organization after tissues and before organ systems.

What are organs?

200

A change in an organism’s environment that cause a response

What is a stimulus?

200

Provides structure and protection for the body. Contains the largest bone in the human body.

What is the skeletal system?

200

The nucleus and this organ system both work as the control center.

What is the nervous system?

200

Both mechanical and chemical digestion occurs here.

What are the stomach and the mouth?

300

Humans, plants, horses, cows, trees, fish, etc

What are organisms?

300

Stomach pain, nausea & vomiting, fever

What are examples of internal stimuli?

300

Uses hormones to help regulate the body. Works closely with the reproductive system.

What is the endocrine system?

300

Mitochondria, chloroplast, and this organ system all transport energy throughout the body; place of energy conversion.

What is the digestive system?

300

Involuntary contraction of muscles throughout the digestive tract. Helps to move the food along.

What is peristalsis?

400

Digestive, Reproductive, Excretory, Nervous, Circulatory

What are organ systems?

400

Shivering when cold and sweating when hot.

What are examples of external stimuli?

400

Responsible for movement in the body. Has 3 types. 

What is the muscular system?

400

Endoplasmic reticulum and this organ system both transport materials throughout the body.

What is the circulatory system?

400

Enzyme used for chemical digestion in the mouth.

What is salivary amylase?

500

Cells are the building blocks of life. All organisms are made of cells. All cells come from pre-existing cells. 

What is the cell theory?

500

Your body goes through changes when it enters one of these modes.

What is fight, flight, or freeze?

500

Transports nutrients and oxygen to the body.

What is the circulatory system?

500

Flagella and this organ system are responsible for movement.

What is the muscular system?

500

Enzyme present in the stomach but not the small intestine.

What is pepsin?