Chemical v Physical Digestion

Which process in the digestive system involves the physical breakdown of food into smaller pieces?

• Respiratory digestion

• Chemical digestion

• Muscular digestion

• Mechanical digestion

Enzymes from the saliva in our mouths are an example of

• Ingestion Digestion

• Physical Digestion

• Excretion

• Chemical Digestion

The tomach digests food by Breaking down food and mixing it with digestive juices. _______ is physical digestion and ________ is chemical digestion.

• Breaking down food; mixing it with digestive juices

• Breaking down food; absorbing the bile

• mixing it with digestive juices; breaking down food

• Secreting bile; and storing it for later.

An example of physical digestion in the small intestines is:

• contracting the muscles to move the food along

• secreting saliva

• mixing food with enzymes

• churning the food in the stomach

What is the role of the small intestine in digestion?

• Breaking down food

• Producing enzymes

• Storing waste

• Absorbing nutrients

Tags

NGSS.MS-LS1-3

All are examples of chemical digestion except:

• saliva

• stomach acid

• chewing

• intestinal enzymes

What is the role of the stomach in digestion?

• The stomach breaks down food and mixes it with digestive juices to begin chemical digestion.

• The stomach has no role in digestion.

• The stomach absorbs nutrients from food.

• The stomach stores food for later use.

Tags

NGSS.MS-LS1-7

In the stomach, physical digestion occurs how?

• Absorption

• Churning

• Excretion

• Stomach acid

What is the role of digestion?

• To absorb nutrients from food

• To break down food into smaller pieces.

• To store excess food for later use

• To produce hormones for digestion

Tags

NGSS.MS-LS2-3

The small intestine engages in chemical digestion by:

• separating smaller parts from larger parts

• converting food into usable energy

• maintaining homeostasis

• mixing with enzymes

Tags

NGSS.MS-LS1-7