4.4 Quiz Homeostasis

Homeostatic Mechanisms

• keep living systems at a static point

• help to keep a relatively constant internal environment in organisms

• usually operate by positive feedback

• allow organisms to operate under extreme conditions

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Which of these conditions indicate positive feedback has occurred?

• The production of a particular product continues its production

• The production of a particular product stops its production

• Sweat evaporates from a person's skin

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Which of these conditions indicate negative feedback has occurred?

• The production of a particular product continues its production

• The production of a particular product stops its production

• Sweat evaporates from a person's skin

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Osmoregulation happens when organisms regulate

• temperature

• blood glucose

• oxygen

• water and solutes

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Thermoregulation happens when organisms regulate

• temperature

• blood glucose

• oxygen and carbon dioxide

• water and solutes

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Gas exchange occurs to regulate

• temperature

• blood glucose

• oxygen and carbon dioxide

• water and solutes

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NGSS.HS-LS2-3

Diabetes is a disease where some mammals cannot properly regulate

• temperature

• blood glucose

• oxygen and carbon dioxide

• water and solutes

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When blood glucose levels get too high, the pancreas stimulates the release of

• glucose

• glycogen

• insulin

• glucagon

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If mammals get too warm, their blood vessels

• constrict to release heat more easily

• dialate to release heat more easily

• constrict to prevent heat loss

• dialate to prevent heat loss

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If mammals get too cold, their blood vessels

• constrict to release heat more easily

• dialate to release heat more easily

• constrict to prevent heat loss

• dialate to prevent heat loss

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NGSS.HS-LS1-3