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- 1. Multiple ChoiceWhat transports substances around the body?BloodSweatTearsUrine
- 2. Multiple ChoiceWhat is involuntary contractions of voluntary muscles to warm up?ShiveringSweatingVasodilationVasoconstriction
- 3. Multiple ChoiceWhat is the evaporation of a liquid to cool the body?ShiveringSweatingVasodilationVasoconstriction
- 4. Multiple ChoiceWhich of the following is an example of positive feedback to indirectly maintain homeostasis?the chemical reactions involved in blood clottingyour blood vessels dilate and you begin to sweat in response to elevated body temperatureyour blood vessels constrict and you begin to shiver in response to low body temperatureyour coach compliments you on your performance in practice
- 5. Multiple ChoiceHomeostasisallows for a wildly fluctuating internal environmentis impossible in vertebratesis the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulationis the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation
- 6. Multiple ChoiceHomeostasis in the human body is often maintained by a:neutral feedback loopsolar feedback looppositive feedback loopnegative feedback loop
- 7. Multiple ChoicePositive feedback is when the change caused by the stimulus isdecreasednon existantincreasedchanges constantly
- 8. Multiple ChoiceWhen you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.Positive Feedback ResponseNegative Feedback Loop
- 9. Multiple ChoiceWhen you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.Positive Feedback ResponseNegative Feedback Loop
- 10. Multiple ChoiceWater diffusing with the concentration gradient from high water concentration to low water concentration across a cell membrane is....Facilitated DiffusionSimple DiffusionActive TransportOsmosis
- 11. Multiple Choice
Which diagram represents an organ?#1#2#3#4 - 12. Multiple ChoiceWhich is the largest structure?CellsTissueOrganOrganism
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