Pretest

Question 1

In which part of the digestive system does a chemical change of the food first occur?

Revolt · Accepted Answer

mouth

Question 2

Which occurs during digestion?

Revolt · Accepted Answer

Physical digestion prepares the food for chemical digestion.

Question 3

Once the teeth start grinding food, [Dropdown 1] is produced to make food moist and slippery.

Revolt · Accepted Answer

[Dropdown 1] saliva; saliva

Question 4

Which are structures of the excretory system? Choose four correct answers.

Revolt · Accepted Answer

ureter; bladder; kidney; urethra

Question 5

Which structures of the digestive system, aside from the small intestine, release substances that help break down food in the small intestine?

Revolt · Accepted Answer

pancreas and liver

Question 6

Which plays both a role in physical and chemical digestion?

Revolt · Accepted Answer

saliva

Question 7

Which is the role of the gall bladder?

Revolt · Accepted Answer

to store the liquid produced by the liver

Question 8

Which statement best describes the breakdown of food in the digestive system?

Revolt · Accepted Answer

Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.

Question 9

The functional unit of the kidney is the [Dropdown 1] .

Revolt · Accepted Answer

[Dropdown 1] nephron; nephron

Pretest Answers