Mitosis and Meosis
Homeostasis
1. Give two words that help to define homeostasis. (2 points) Regulate body
2. Why does the body attempt to maintain homeostasis? What is the importance? (2 points)
The body attempts to maintain homeostasis because the body needs to keep its internal environment regulated and everything at a constant level. The outside temperature can change but it is important to maintain homeostasis because if the temperature level inside the body changes that can cause a person to get sick.
3. List the four main factors in a feedback loop. (4 points)
1.Stimulus
2.Sensor
3.Control Center
4.Effect
4. Distinguish between a negative feedback mechanism and a positive feedback mechanism. Give two examples are how they are different from one another. (2 points)
Negative feedback keeps things the same. The sensor detects change to the environment and then the control center sends out an effect to get things back to normal. The positive feed back mechanism does the opposite, it will bring about an increase in change. An example of a positive feedback is when a mother goes into labor, and the positive feedback causes contractions until the mother is ready to give birth. Though positive feedback can be deadly, when a person gets sick with a fever the positive feedback can increase the temperature until the person over heats and dies. The negative feedback would be the reason that the people get better, the increase in temperature gets detected by the sensor and the control center sends out the means to make a the body temperature go back down to 98.6 degrees.
1. Give two words that help to define homeostasis. (2 points) Regulate body
2. Why does the body attempt to maintain homeostasis? What is the importance? (2 points)
The body attempts to maintain homeostasis because the body needs to keep its internal environment regulated and everything at a constant level. The outside temperature can change but it is important to maintain homeostasis because if the temperature level inside the body changes that can cause a person to get sick.
3. List the four main factors in a feedback loop. (4 points)
1.Stimulus
2.Sensor
3.Control Center
4.Effect
4. Distinguish between a negative feedback mechanism and a positive feedback mechanism. Give two examples are how they are different from one another. (2 points)
Negative feedback keeps things the same. The sensor detects change to the environment and then the control center sends out an effect to get things back to normal. The positive feed back mechanism does the opposite, it will bring about an increase in change. An example of a positive feedback is when a mother goes into labor, and the positive feedback causes contractions until the mother is ready to give birth. Though positive feedback can be deadly, when a person gets sick with a fever the positive feedback can increase the temperature until the person over heats and dies. The negative feedback would be the reason that the people get better, the increase in temperature gets detected by the sensor and the control center sends out the means to make a the body temperature go back down to 98.6 degrees.