The maintenance of a relatively constant internal environment is called...
What is Homeostasis?
This feedback loop brings counterbalances the original stimulus.
What is the negative Feedback Loop?
This begins the process of scientific method.
What is observation?
A basic unit of all living things.
What is a cell?
_______is the basic unit of all things.
What is an atom?
This feedback loop brings the body back to homeostasis.
What is negative feedback loop?
Which organ in your body is referred to as the control center?
What is the brain?
The letter A identifies which part of the respiratory.
system?
What is the alveoli??
Negative/Positive is the most common feedbacks loop in our body.
What is negative?
The gland that produces ADH.
What is the posterior pituitary gland?
In negative feedback loop, the ________detect changes in the variable.
What is the receptor/sensor?
This Feedback loop intensifies the original stimulus and takes the body further away from the homeostasis.
What is the positive feedback loop?
When graphing, the ___________ variable goes on the x-axis.
What is the independent variable?
A high school freshman, after running 5 miles, produces urine that is dark yellow. The student is most likely _____________.
What is dehydrated?
What system is described below?
What is the Skeletal System?
You take a trip to Burger King and purchase a two for one deal of double Whoppers. The ________ level was found to be elevated. As a result, pancreas produced insulin to counteract the large consumption of food. 
What is glucose?
When there is a break or tear in the blood vessel wall, ________ adhere to the site to plug the tear.
What are Platelets?
The master gland of the endocrine system.
What is the pituitary gland?
The function of a anti diuretic hormone is ___________.
The function of the enzymes in the digestive system is ____________.
What is to break down large molecules so they can transported into the blood stream?
This stimulus causes the body's blood vessels to dilate.
What is body temperature rising?
The muscular and circulatory systems respond to the body this way when the body temperature falls below 98.6oF.
What is shivering and blood vessels narrowing?
The plant that grew 5 cm in the experiment above.
What is plant B?
A high school freshman, after running 5 miles, produces urine that is dark yellow. The student is most likely _____________.
What is dehydrated?
The hormone that is produced when the kidney needs to reabsorb water.
What is ADH?
This picture describes what kind of feedback loop?
What is a positive feedback loop?
Fill in the blanks, O2 diffuses in to the ______ from the _______.
What are capillaries and alveoli?
Refer back to the chubby bear demonstration in class. Fill in the blanks. The Water molecules from a ____ _________ of water outside of the bear to _______ concentration of water inside the bear.
What are high concentration and low concentration?
These two organ systems are involved in the process below.

What are digestive and circulatory systems?
Explain how fruit ripening is a positive feedback loop.
A ripened fruit produces ethylene and more fruit become ripened as a result of absorbing the gas.
The gas that is produced during fruit ripening.
What is ethylene gas (C2H4)?
This would happen if your body did not vasoconstrict and shiver on a very cold day.
What is hypothermia or body temperature below the norm?
The production of ________ help break down bigger molecules in food.
What are enzymes?
Place these in order of large to small.
organ system, cells, atoms, organisms, tissues, organs, molecules
What are organisms, organ system, organs, tissues, cells, molecules, atoms?
The urine produced by a student after drinking 40oz of water is very very pale yellow. Explain this negative feedback loop.

The hormone produced during child birth and the glad that produces it. Be specific.
What is oxytocin and posterior pituitary gland?
Complete the blanks. The ____________ system is composed of network of glands that secrete __________ as a part of regulating body's function.
What are endocrine system and hormones?
There is a higher concentration of O2 in the _______ than the ______________.
What are alveoli and capillaries?
Place the following terms from small to large.
biome, population, ecosystem, organism, biosphere, community
What are organism, population, community, ecosystem, biome, biosphere