A single celled organism that does not have a nucleus.
What is a prokaryote?
100
A structure composed of two or more different types of tissues.
What is an organ?
100
The elimination of waste.
What is egestion?
100
These thick walled, muscular tubes carry blood away from the heart.
What is an artery?
100
The windpipe that delivers air from the mouth to the bronchi.
What is the trachea?
200
The process of cell division.
What is mitosis?
200
The process in which a cell becomes specialized.
What is differentiation?
200
The involuntary muscle contractions of the intestine or other canals creating a wavelike movement to carry objects along.
What is peristalsis?
200
These less muscular tubes are larger in diameter and carry blood toward the heart.
What is a vein?
200
Insects receive air through these openings on the sides of their abdomens.
What are spiracles?
300
The stage of mitosis where paired chromosomes separate and the cell begins to elongate.
What is anaphase?
300
The tissue that covers the body surface and lines the body cavities.
What is epithelium?
300
Digested food in a liquefied paste.
What is chyme?
300
In this type of circulatory system, blood is dumped into the body cavity from the arteries until the pressure increase, forcing the blood back into the veins.
What is an open system?
300
In this type of gas exchange, tubes and fluids are used to transport the gas.
What is indirect gas exchange?
400
This type of reproduction involves only one cell which divides into two genetically identical copies.
What is asexual reproduction?
400
In this type of tumor, cells stay together in a mass and do not affect the surrounding cells.
What is a benign tumour?
400
This part of the small intestine completes the absorption process.
What is the ileum?
400
These tiny blood vessels have very thin walls, allowing red blood cells to pass through one at a time.
What are capillaries?
400
The name for the tiny air sacs in lungs where the gas exchange of oxygen and carbon dioxide occurs.
What are the alveoli?
500
A threadlike structure found in the nucleus that carries genetic information, or DNA.
What is a chromosome?
500
In this dangerous process, cancer cells break away from the mass and settle in other parts of the body.
What is metastasis?
500
This epithelial lining lines the digestive track and consists of different mucus, enzyme, hormone secreting cells and absorptive cells.
What is the mucosa?
500
This part of the heart receives blood from the body.
What is the atrium?
500
In this type of gas exchange, either air or water enters through one opening, travels along a path to the gas exchange surface, and then exits the body through the same opening.