Quiz 2 Digestive System : use your drawing again!

Muscle is meat, and is made of mostly protein, which is CHANGED INTO amino acids by hydrochloric ACID in your stomach. This type of digestion is

• chemical

• physical/mechanical

This forms a new substance by ACIDS or ENZYMES, and cannot be easily changed back.

• Chemical Change

• Physical/Mechanical Change

Chewing food with teeth brakes big food chunks into small food bits. This is a

• physical/mechanical digestion

• chemical digestion

Changes the size or shape of food:

• Physical/Mechanical Digestion

• Chemical Digestion

The liver makes a bile, which is stored in the gallbladder until it is needed to CHANGE fat lipids INTO fatty acids. This is

• Chemical Digestion

• Physical/Mechanical Digestion

The enzyme "amylase" found in saliva (spit) changes carbohydrates into sugar. This is

• physical/mechanical digestion

• chemical digestion

The stomach squeezes and churns (mixes) food, changing its shape. This is

• Chemical Digestion

• Physical/Mechanical Digestion

The stomach releases hydrochloric acid and enzymes to break down protein in meats into amino acids. This is

• Physical/Mechanical Digestion

• Chemical Digestion

"Peristalsis" is wave-like contractions of smooth muscle through the entire digestive tract from the esophagus to the anus. This involuntary action SQUEEZES food , which makes a

• physical/mechanical change.

• chemical change.

The esophagus leads to the

• stomach

• liver

• intestines

• pancreas