Week 6-Digestive System Assessment Learning Check May 11-14

1. What is the function of the digestive system?

• Transports oxygen, nutrients and waste to and from all cells in our body.

• Uses hormones to control body processes that happen slowly to maintain homeostasis.

• Physically and chemically changes food into smaller molecules that the body can absorb into the circulatory system.

2. Which of these would be an example of an EXTERNAL stimulus that your Digestive System might respond to?

• Hormones going through the blood to speed up metabolism

• Getting punched in the teeth causing you to flinch

• Smelling food cooking causing you to salivate

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3. Which of the following statements BEST describes chemical digestion?

• The food is broken down into smaller pieces by the teeth

• Food is chewed and the enzymes in the saliva break down the food.

• The esophagus squeezes the food towards the stomach.

4. Which of the following is an example of a physical change that occurs during digestion?

• In the stomach, pepsin turns proteins to amino acids.

• In the mouth, enzymes break down carbohydrates.

• In the stomach, muscle contractions move the food around.

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5. Which of the following changes, that occurs during digestion, produces a result that indicates a chemical change has occurred?

• Teeth crushes the food, changing the way it looks

• Saliva changes complex carbohydrates into sugars

• The tongue shapes chewed food into a ball

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6. Which of the digestive structures in the table can cause a chemical change to occur?

• Stomach

• Esophagus

• Tongue

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7. In which of the following scenarios is chemical energy being transformed into thermal energy?

• A squirrel uses the energy in seeds to build structures in its body

• A tree captures sunlight to produce the sugars it uses for food

• A lion’s temperature increases as it uses the energy it gets from its prey

8. Mammals maintain a constant body temperature by converting

• Radiant energy → thermal energy

• Chemical energy → thermal energy

• Chemical energy → electrical energy

9. Which human body system performs a function similar to what the mitochondria perform for the cell?

• Digestive system

• Integumentary system

• Nervous system

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10. Where does the rabbit get its energy to hop away and escape predators?

• Radiant energy from the sun

• Chemical energy from the bush

• Convection energy from wind

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