The Digestive and Excretory Systems

The type of digestion that involves breaking foods down into absorbable macromolecules so they can be used for energy, vitamins, or stored for later use.

Tags

NGSS.MS-LS1-7

Most enzymes are

• carbohydrates

• hormones

• proteins

• triglycerides

Tags

NGSS.MS-LS1-7

Amylase and lactase are examples of

• macromolecules

• enzymes

• vitamins

• sugars

The phase of digestion that includes the mouth and esophagus.

• Cephalic phase

• Gastric phase

• Intestinal Phase

Which of these is an example of peristalsis?

• Food being changed during chemical reactions to break it into macromolecules

• The liquified food that leaves the stomach and enters the small intestine

• The filtering of blood by the kidneys to remove waste and excess water

• The contraction and relaxation of muscles to move food through the small intestine

What does salivary amylase do?

• Breaks down complex carbohydrates

• Breaks down lipids

• Destroys bacteria in the stomach

• Moves food through the digestive tract

Lipase is an enzyme that breaks down lipids, like triglycerides. Which of these foods would be chemically digested by lipase?

• apple

• chicken

• peanut

• spaghetti

Tags

NGSS.MS-LS1-7

The only organ that is part of the gastric phase of digestion is the _________.

Tags

NGSS.MS-LS1-7

Which macromolecule begins chemical digestion in the stomach?

• proteins

• complex carbohydrates

• lipids

• simple sugars

Tags

NGSS.MS-LS1-7

From which organ are the majority of the body's calories and macromolecules absorbed?