Metabolic Reactions

the body's use of molecules for energy and growth

• system

• starch

• metabolism

• protein

Tags

NGSS.MS-LS1-7

a molecule that organisms get from the air or water around them and use to release energy

• proteins

• glucose

• amino acids

• oxygen

Tags

NGSS.MS-LS1-7

What does starch get broken down into?

• proteins

• glucose

• amino acids

• oxygen

What do proteins get broken down into?

• glucose

• starch

• oxygen

• amino acids

An athlete thinks that she can exercise as long as she eats different types of food because her body just needs different types of food molecules to work properly. Is the athlete correct?

• Yes, her cells only work when they have molecules from different types of food.

• No, her muscles do not need molecules from food because all cells make all the molecules they need.

• No, all cells need molecules from food and molecules from air to work properly.

• No, only her stomach cells need food molecules to work properly.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Doctors tested a patient to find out what molecules were in her cells. Her cells contained normal levels of amino acids, normal levels of oxygen molecules, and low levels of glucose molecules. Will this patient be able to exercise normally?

• Yes, her cells just need to combine amino acids to release energy.

• No, her cells need to combine glucose into starch molecules to release energy.

• No, her cells need glucose to react with oxygen to release energy.

• Yes, her cells just need oxygen to release energy.

Tags

NGSS.MS-LS1-7

Doctors tested a patient to find out what molecules were in his cells. His cells contained normal levels of glucose molecules and amino acid molecules, and low levels of oxygen molecules. Will this patient be able to exercise normally?

• Yes, his body is working properly enough to exercise.

• No, his digestive system is not breaking down food molecules; his cells need starch molecules to react with glucose, which releases energy.

• No, his body systems are working, but he needs to eat different food; only proteins can react with glucose to release energy.

• No, his respiratory system is not working; his cells need oxygen to react with glucose, which releases energy.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

NGSS.MS-LS1-7

Raoul ate a meal of oats before seeing his doctor. Oats are made of mostly starch molecules. Raoul feels tired, so his doctor gave him a test and found that Raoul’s cells contained glucose molecules, but they did not contain enough oxygen molecules. Does this explain why Raoul feels tired?

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

• Yes, his digestive system is breaking down starch molecules, but his respiratory system may not be working properly.

• Yes, his respiratory system is working, but his digestive system is not getting energy from combining glucose molecules.

• Yes, his digestive system is working, but his respiratory system is not breaking down oxygen, so his body stopped making energy.

Tags

NGSS.MS-LS1-7

These are called the powerhouse of the cell. They supply energy for the cell.

• Mitochondria

• cell membrane

• protein

• glucose

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Even if your oxygen and amino acids are at normal levels, what else do your cells need to make energy?

• starch molecules

• atoms

• protein molecules

• glucose molecules