Twenty First Century Additional Science: Homeostasis
A quiz on the B4 subject Homeostasis from Twenty first Century Addition Science 0CR.
- Created by: Katie
- Created on: 12-05-09 16:55
Other questions in this quiz
2. Vasoconstriction and Vasodilation help the body to
- Get rid of toxic waste products for example urea and carbon dioxide
- Keep a constant body temperature
- Keep the correct levels of salt and water
- Control the amount of nutrients ie Glucose
- Take in enough oxygen for respiration
3. A negetive feed back system is...
- An Incubator
- When a receptor sends a message to a processing centre
- Any change in the system that results in an action that reverses the change
- Two antagonistic effectors
4. What is the optimum temperature for enzymes within the body?
- 37 degrees C
- 28 degrees C
- 27 degrees C
- 42 degrees C
5. Diffusion is....
- Overall more molecules move away from where they are concentrated to where they are less concentrated
- Osmosis through a patially permeable membrane
- Overal molecules move from where they are less concentrated to where they are more concetrated.
- When glucose is used to transport molecules against the concentration gradient
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