NGSS.MS-LS1-7

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change. 

• Chemical then Physical 
• Physical then Chemical
• Both Physical
• Both Chemical

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NGSS.MS-LS1-7

Food is digested in the stomach

• Chemical Change
• Physical Change

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NGSS.MS-LS1-7

Both the esophagus and the small intestine are involved in the digestion of food. The esophagus squeezes food into the stomach by wave-like muscle contractions. Peptidase enzymes in the small intestine break food molecules into smaller molecules.

Which statement best describes changes to food during digestion?

• The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.

• The muscle contractions and the action of the peptidase both result only in physical changes.

• The muscle contractions result in chemical changes, while the action of the peptidase results in physical changes.

• The muscle contractions and the action of the peptidase both result only in chemical changes.

Tags

NGSS.MS-LS1-7

Which of the following transfers occurs when food is digested?

• Chemical to mechanical

• Mechanical to thermal

• Mechanical to solar

• Chemical to thermal

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NGSS.MS-LS1-7

What substance or chemical is in your mouth to help soften food and begin carbohydrate digestion?

• Saliva

• Water

• Blood

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NGSS.MS-LS1-7

Plants and animals both use the process of _____ to release stored energy.

• photosynthesis
• chemical reaction
• growth
• cellular respiration

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NGSS.MS-LS1-7

During cellular respiration, energy is captured from the food that we eat and stored in our bodies for future use. Which of the following is NOT a product of cellular respiration? (SC.8. L.18.2)

• Carbon Dioxide

• Water

• Oxygen

• Adenosine Triphosphate (ATP)

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NGSS.MS-LS1-7

What type of energy do we get from the food we eat?

• light

• thermal

• chemical

• sound

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NGSS.MS-LS1-7

This organ is part of the digestive system.

• lung

• heart

• brain

• stomach

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NGSS.MS-LS1-7

Which organelle performs the Kreb's cycle part of cellular respiration?

• Chloroplast

• Mitochondria

• Ribosomes

• Cytoplasm

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NGSS.MS-LS1-7