Chemical and Physical Changes in the Digestive System

The majority of digestion and absorption occurs here. Name this organ.

Your teeth rip and tear your food into smaller pieces. This is an example of what type of digestion?

• physical digestion

• chemical digestion

Bile from the liver breaks down fats in the food that you eat. Is this an example of physical or chemical digestion?

• physical digestion

• chemical digestion

Tags

NGSS.MS-LS1-7

What substance coats the inside of the stomach to protect it from its own acid?

• mucus

• hydrochloric acid

• bile

• saliva

Amylase is an enzyme found in our saliva. Amylase changes starch into...

• glucose

• salt

• iron

• starch

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

What happens to the amount of water and fiber over time? Where are they going?

• Water and fiber stay the same for both M'Kenna and a healthy person. They will pass through the digestive system.

• Water and fiber stay the same for the M'Kenna and a healthy person. They will get absorbed in the digestive system.

• Water decreases and fiber increases. This is because water gets absorbed and fiber will pass through the digestive system.

• Water increases and fiber decreases. This is because fiber gets absorbed and water is passed through the digestive system.

Tags

NGSS.MS-LS1-7

What's happening to the amount of glucose in M'Kenna versus a healthy person?

• The amount of glucose stays the same between M'Kenna and a healthy person

• The amount of glucose decreases in both M'Kenna and a healthy person, but decreases more in a healthy person

• The amount of glucose decreases in both M'Kenna and a healthy person, but decreases more in M'Kenna

• The amount of glucose increases in both M'Kenna and a healthy person, but increases more in a healthy person

Tags

NGSS.MS-LS2-1

Which of the following claims can you make based on the graph below?

• Complex carbohydrates reduces to nothing as it moves through the digestive system.

• Complex carbohydrates in M'Kenna's digestive system reduces but not as much as a healthy person

• Fiber stays constant in both a healthy person and M'Kenna

• All of the above claims can be made

• None of the above claims can be made

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When we chew a bite of food, what would indicate the food is going through a physical change?

• It converts into something else

• It changes color

• It changes temperature

• It is broken down into smaller pieces

When we chew a bite of food, what would indicate the food is going through a chemical change?

• It converts into something else

• It changes phases (ie. solid to liquid)

• It doesn't change at all

• It is broken down into smaller pieces

Tags

NGSS.MS-PS1-2