Metabolism

In the cell, amino acids form proteins. This is called

• Cellular Growth and Repair

• Cellular Respiration

• Circulatory System

• Carbon Dioxide

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Oxygen molecules do not need to be broken down to enter a cell.

• True

• False

A person thinks they can exercise as long as they get the right molecules from food. Are they correct?

• Yes, you only need starch and protein from food in your cells.

• Yes, you only need glucose and amino acids in your cells.

• No, you need starch, protein and oxygen in your cells.

• No, you need glucose, amino acids and oxygen in your cells.

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If your digestive system is not breaking down foods properly, why is this a problem for your cells?

• The cells will not work well because molecules from the food are not being broken down small enough to get to the cells.

• The body will run out of energy because molecules from the air are not being combined into larger molecules for the cells.

• The respiratory system will have to work twice as hard to break down molecules from food.

• The cells will not work well because the molecules from food will be too small for cells to use.

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Doctors are going to monitor a patient while they are on a space flight. What is one way doctors will be able to tell whether their body is healthy enough to do all her tasks while the patient is in space?

• The doctors could see if her cells are getting several different types of food molecules.

• The doctors could see if she is getting plenty of sleep so her body has enough energy.

• The doctors could see if her lung cells have molecules from air, and her stomach cells have molecules from food.

• The doctors could see if her cells are getting the molecules they need from food and air.

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In the cell, oxygen and glucose molecules go to the _________ .

• Amino acids

• Nucleus

• Mitochondria

• Starch

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What body system breaks down large food molecules?

• Circulatory System

• Digestive System

• Respiratory System

What two molecules are needed for cellular respiration?

• Water and Carbon Dioxide

• Glucose and Oxygen

• Amino Acids and Glucose

• Oxygen and Water

A patient has been eating healthy foods, but his digestive system is not doing what it usually does. Can this patient still exercise normally?

• Yes, as long as he can still breathe, his cells will have all the molecules they need to release energy.

• No, molecules from food are not combining together to be large enough for his cells to use.

• No, molecules from food are not getting broken down small enough to get inside his cells.

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If a person is breathing normally, which of the following could prevent him from using his body to exercise normally?

• Not getting enough sleep, because the body only makes energy for exercise while asleep.

• Not eating the right food, because cells need molecules from both food and air to work.

• Nothing, because he would be able to me exercise normally as long as his cells are getting molecules from the air.

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