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- 1. Multiple Choice
Which of the following animals has a body temperature that doesn't change depending on the weather outside?
- 2. Multiple Choice
Endothermic creatures maintain fairly consistent body temperatures. Ectothermic creatures do not. What are the best synonyms for "endothermic" and "ectothermic?"
Warm-blooded and cold-blooded
Land-dwelling and water-dwelling
Mammalian and reptilian
Vertebrate and invertebrate
- 3. Multiple Choice
What can you infer about the prefix "thermo-" from the word "thermo-regulation?"
It refers to the brain
It refers to temperature
It refers to feedback
It refers to nerves and hormones
- 4. Multiple Choice
Place the following events in sequence: A) Your body begins overheating; B) Nerves and hormones communicate with the hypothalamus; C) You begin sweating
B, C, A
A, B, C
A, C, B
B, A, C
- 5. Multiple Choice
What is the major difference between positive and negative feedback?
Positive feedback is controlled by the hypothalamus; negative feedback is controlled by the endocrine system
Positive feedback causes bodily processes to continue; negative feedback causes bodily processes to start or stop
Positive feedback shuts down bodily systems; negative feedback starts up of bodily systems
Positive feedback occurs when you get too hot; negative feedback occurs when you get too cold
- 6. Multiple Choice
The contractions experienced by women in labor are often very painful. Yet the body's feedback system encourages them to continue when the baby is ready. Why?
A woman's feedback system goes haywire when she goes into labor
Though painful, the contractions help women give birth
The feedback system also releases special hormones to kill the pain
The baby's feedback system causes the contractions to continue, not the mother's feedback system
- 7. Multiple Choice
What might happen if you didn't run a fever when you got sick?
You would recover much more quickly
Your body temperature would drop to dangerous levels
Your immune system would shut down
Your body wouldn't fight off the infection as efficiently as it could
- 8. Multiple Choice
When do you use your excretory organs?
When you get sick
When you use the bathroom
When your body gets too hot or cold
Every time you take a breath
- 9. Multiple Choice
Which of these is an example of negative feedback?
A pregnant woman experiencing contractions
Your blood clotting as a cut on your arm closes up
A dog panting in the hot sun
Waste building up in your lower intestine
- 10. Multiple Choice
What might happen if your respiratory center malfunctioned?
The oxygen level in your blood might go out of balance
Your nostrils and other breathing passages might close up
Your lungs might collapse
You might start inhaling carbon dioxide instead of oxygen
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