Metabolism

What 3 molecules do cells need to be healthy?

• Glucose

• Carbon Dioxide

• Water

• Amino Acids

• Oxygen

Tags

NGSS.MS-LS1-6

What does the digestive system do in a healthy body?

• Takes in oxygen

• Breaks down food into blood cells

• Breaks down food into amino acids and glucose

Tags

NGSS.MS-LS1-7

Stella's respiratory system is not working well. Why is this a problem for her ability to exercise?

• Her respiratory system will not be able to break down molecules from air into oxygen.

• Her cells will not work well when they have low levels of oxygen.

• Her digestive system will have to work twice as hard to get the same amount of energy from glucose molecules.

Tags

NGSS.MS-LS1-7

Some types of syrup are almost entirely made of glucose molecules. If a person ate some syrup like this, what would happen to her ability to exercise?

• It would be harder for her to exercise because her digestive system would need to use more enzymes to combine the glucose molecules together

• It would be easier for her to exercise because glucose moves through the circulatory system faster than other food molecules usually do.

• Nothing would happen to her ability to exercise, but her digestive system would not work as hard, since glucose is already small enough to get to her cells.

Tags

NGSS.HS-LS1-7

Some problems with the digestive system make it very difficult for the body to digest enough food. Why would it be harder to exercise when you have a digestion problem like this?

• You would not be able to sleep, which would make you too tired to exercise.

• Your cells would have molecules from air, but would not get enough molecules from food.

• You would not get any of the molecules your cells need to exercise.

Tags

NGSS.MS-LS2-1

Cade thinks that his body only works right when cells are getting molecules from food and molecules from air. Is he correct?

• Yes, the body only works with both kinds of molecules (food and air).

• No, the body works when cells get molecules from different kinds of food.

• No, the body only works when the stomach gets molecules from food and the lungs get molecules from air.

• No, because cells make all the molecules they need.

Tags

NGSS.MS-LS1-3

My friend Renee has asthma, a condition that makes it hard to breathe. Would it be hard for my friend to exercise?

• yes, if she has enough sleep, she can make enough energy.

• No, as long as she has her inhaler, she can exercise.

• No, the person's cells may not have everything they need, but her body can still exercise.

• Yes, it will be difficult for my friend to exercise because she needs molecules from air in her cells.

Rebecca has been eating lots of healthy foods, but can't seem to breath as well as she usually does. Can she still exercise normally?

• No, her cells do not have enough oxygen to react with proteins to release energy.

• No, her cells do not have enough oxygen to react with glucose and release energy.

• Yes, Rebecca can get all she needs from the molecules in food.

• No, her digestive system cannot break down carbohydrates.

Tags

NGSS.MS-LS1-3

Eric ate a big bowl of rice (a starch) before seeing his doctor since he was feeling tired all the time. A medical test determined he had normal levels of oxygen but low levels of glucose. Does this explain why he is tired?

• Yes, Eric's respiratory system is working but his digestive system is not turning oxygen into glucose.

• No, something else must be wrong with Eric because his cells have all the molecules they need.

• Yes, his digestive system is working, but his respiratory system has too much oxygen, so his body stopped making energy.

• Yes, Eric's respiratory system is working, but his digestive system is not breaking starch down into glucose.

Mr. T was tested and Doctors found that his cells had normal levels of oxygen and glucose, but no starch molecules. Will he be able to exercise?

• Yes, the glucose and oxygen can react to release energy.

• No, his digestive system is not breaking down food.

• No, his body systems are working, but he needs to eat better foods.

• Yes, as long as he has glucose, his cells don't need anything else.

Tags

NGSS.MS-LS1-7