Lesson 8 Quiz Multiple Choice

How did the respiration-rate pattern compare to the circulation-rate pattern?

• a. The respiration-rate pattern was much higher than the circulation-rate pattern.

• b. Both patterns are similar, with rates that increase as the exercise time increased and return to normal when the exercise stopped.

• c. The circulation-rate pattern was much higher than the respiration-rate pattern.

• d. The respiration rate increased and there was no change in the circulation rate pattern.

Tags

NGSS.MS-PS3-5

Why do you think this happens? What do the results tell you about energy in your body?

• a. The respiration-rate pattern was much higher than the circulation-rate pattern because you were breathing really fast.

• b. The circulation-rate pattern was much higher than the respiration-rate pattern because you need to get food to your cells to get energy.

• c. The respiration rate pattern was similar to the circulation-rate pattern because when you are exercising, you need more food and oxygen. You breathe harder to get oxygen and your blood is pumped more to get the food and oxygen to your cells to get energy.

• d. The respiration-rate pattern was much higher than the circulation-rate pattern because you needed to get oxygen to your cells

Tags

NGSS.MS-LS1-3

Look at the rest rate for both experiments. How can you use these results to help answer the question of whether your body is always using some energy? Pick the best answer.

• a. Our body is always using some energy since our resting rates were lower.

• b. The pulse and respiration rates at rest were always above “0” so blood was circulating and oxygen was being inhaled even at rest.

• c. Our body doesn’t use energy when we are resting.

• d. Our body is always using some energy since our resting rates were higher.

Tags

NGSS.MS-LS1-3

NGSS.MS-PS3-5

Why did your body respond to the exercise the way it did? Choose the best answer.

• a. I needed more oxygen to release the energy in food.

• b. I needed to breathe more so that I could exercise.

• c. My heart needed to pump faster so that I could exercise.

• d. I needed more food to release the energy in oxygen.

Tags

NGSS.MS-LS1-3

What do you think homeostasis is?

• Keeping your body systems stable

• Staying at home

• Making body systems unstable

Which of the following is an example of homeostasis?

• Birds eating 50% of their body weight to keep their metabolism high to warm their bodies

• Humans' circulatory and respiratory systems working harder during exercise to provide cells with more energy

• Trees shedding their leaves and becoming inactive to save energy during colder months

• All of the above

The thorns of a saguaro cactus helps it maintain homeostasis and conserve water. How does it help do that? Choose ALL that apply.

• a. The thorns plug up holes in the cactus so that water can’t get out.

• b. The thorns keep animals from taking water needed for the plant to survive.

• c. The cactus has thorns instead of leaves since leaves allow water to evaporate from plants.

• d. The thorns attract animals to eat the cactus.

Tags

NGSS.MS-LS2-1

Dogs can not sweat like humans, so what must they do what to cool their bodies down? Select ALL that apply.

• Drink 50% of their weight in water

• Stay out of the sun and remain in shaded areas

• Pant to cool down

• Lick itself to spread saliva over the body so it cools by evaporation

Which of the following is an example of homeostasis in humans?

• taking out the trash
• drinking water
• sweating on a hot day
• taking a shower