Show:
Cells
Breathe and Circulate
Eat and Release
Being Green
Mixed
100
This thin layer surrounds all cells and allows water and dissolved materials to pass into and out of the cell.
What is the cell membrane?
100
This system is responsible for taking air into the body and pushing it back out again.
What is the respiratory system?
100
Digestion begins here.
What is the mouth?
100
The process a plant uses to make food.
What is photosynthesis?
100
This word refers to organisms or structures that have more than one cell.
What is multicellular?
200
Only this type of cell has a cell wall.
What is a plant cell?
200
This pump pushes blood throughout the circulatory system.
What is the heart?
200
This pair of organs clean and filter the blood.
What are the kidneys?
200
These tubes inside the trunk or stem carry water and minerals from the soil upward.
What is xylem?
200
This structure in plant cells captures light energy used in the food-making process.
What is a chloroplast?
300
This jelly-like substance fills most of the cell.
What is cytoplasm?
300
These spongy organs expand when they fill with air.
What are lungs?
300
Between the large and small intestine, this one is the longer of the two.
What is the small intestine?
300
Yes, dogs do it. More importantly, it's the tough, outer layer of a tree.
What is bark?
300
The inner tubes in the trunk or stem that carry food made in the leaves down into the trunk or roots for storage.
What is phloem?
400
This cell structure controls all of its activities.
What is the nucleus?
400
This air tube joins the throat to the lungs.
What is the trachea?
400
These small, coiled tubes end at the pores on the skin's surface.
What are sweat glands?
400
This underground part of a plant anchors it and absorbs water and nutrients.
What are roots?
400
This tissue is made up of plasma, red and white blood cells, and other types of cells.
What is blood?
500
This structure is known as the powerhouse of the cell.
What is the mitochondrion?
500
These blood vessels carry blood from the capillaries to the heart.
What are arteries?
500
This wave-like motion pushes food through the esophagus to the stomach.
What is peristalsis?
500
This part of a plant supports the leaves and flowers and carries water to these parts.
What is the stem?
500
This is the process of using oxygen to release energy from food.
What is cell respiration?