Practice Questions For Chapter 2

1. Which of the following are at equilibrium with their surroundings? Explain why.
a. Skunk on side of the road
b. Dr. Stone’s Lizard is 18.3 °C at night
c. Dr. Stone’s Cat is 38.6 °C at night
d. Blood glucose levels are tightly regulated to about 110 mg/dl of blood
e. The same amount of Oxygen is delivered to tissues at sea level as at the summit of Kirkwood.

2. Which of the following are example of Homeostasis? Explain why.
a. Skunk on side of the road
b. Dr. Stone’s Lizard is 18.3 °C at night
c. Dr. Stone’s Cat is 38.6 °C at night
d. Blood glucose levels are tightly regulated to about 110 mg/dl of blood
e. The same amount of Oxygen is delivered to tissues at sea level as at the summit of Kirkwood.

3. When is energy required to maintain a steady state? Explain why.
a. Skunk on side of the road
b. Dr. Stone’s Lizard is 18.3 °C at night
c. Dr. Stone’s Cat is 38.6 °C at night
d. Blood glucose levels are tightly regulated to about 110 mg/dL of blood’
e. The same amount of Oxygen is delivered to tissues at sea level as at the summit of Kirkwood.

Answers: 1. A 2. B,C,D,E 3. B,C,D,E Anything alive is using energy to maintain homeostasis (a steady state), which means that they are NOT at equilibrium

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