Classification
Cells
Cells
Human Body Systems
Respiratory system
100

Put things into groups to make it easier for scientists to communicate.

What is classification?

100

The smallest part of your body that carries out the activities of life.

What are cells?

100

The basic unit in any living thing

What are cells?

100

In this human body system, there is the heart, blood, and tubes called blood vessels.

What is the circulatory system?

100

A sticky thick fluid, that traps dust, germs, and other things that may be in the air.

What is mucus?

200

The highest or most general group of organisms.

What is a Kingdom?

200

The taking in of oxygen and food, such as sugar in order to get energy

What is cellular respiration?

200

All the material inside of the cell is a jelly-like substance that holds the cell's parts in place.

What is cytoplasm?

200

Blood vessels that carry blood away from your heart to other parts of your body.

What are arteries?

200

A tube that carries air from the larynx to the lungs

What is the trachea?

300

The next classification below Kingdom.

What is Phylum?

300

Surrounds a cell, holding in its parts

What is a cell membrane?

300

A group of the same kind of cells working together doing the same job.

What are tissues?

300

The smallest kind of blood vessel

What is a capillary?

300

These tubes branch into smaller and smaller tubes

What are bronchioles?

400

The lowest level in classification

What is species?

400

The part of the cell that contains DNA and chromosomes  

What is a nucleus?

400

A grouping of different tissues working together to perform a main job in the body.

What is an organ?

400

Blood vessels that take blood from the cells back to the heart

What are veins?

400

This helps oxygen enter the blood and carbon dioxide leaves the blood 

What are air sacs?

500

Animals with backbones

What are vertebrates?

500

Acts like a stomach in the cell and breaks down materials.

What are vacuoles?

500

A group of organs and tissue working together to carry out a life process.

What is an organ system?

500

Flaps act as a door in the veins to keep the blood flowing in one direction.

What are valves?

500

This contains vocal cords

What is a larynx?

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