Question 1

What watery liquid helps break down starchy food?

Accepted Answer

Saliva

Answer

Juice

Answer

Water

Answer

Milk

Question 2

What is our stomach made of?

Accepted Answer

Muscle

Answer

Fat

Answer

Bone

Answer

Skin

Question 3

What is the name of the tube that leads from our mouth to our stomach?

Accepted Answer

Esophagus

Answer

Liver

Answer

Stomach

Answer

Intestine

Question 4

How big is the stomach when it is empty?

Accepted Answer

the size of your fist

Answer

the size of a watermelon

Answer

the size of a basketball

Answer

the size of a tennis ball

Question 5

How does the stomach break down food?

Accepted Answer

by churning and squeezing it

Answer

by boiling it

Answer

by melting it

Answer

by freezing it

Question 6

What is the main role of the small intestine in digestion?

Accepted Answer

to absorb nutrients into the bloodstream

Answer

to store waste

Answer

to produce enzymes

Answer

to break down food into small pieces

Question 7

What two things are true about the small intestine?

Accepted Answer

It is about twenty-five feet long and tightly coiled.

Answer

It is short and small in diameter.

Answer

It is the place where minerals and moisture are removed from waste.

Answer

It is about twenty-five feet long and very large around.

Question 8

Where do the enzymes that help digest our food come from?

Accepted Answer

the liver and pancreas

Answer

the pancreas and stomach

Answer

the liver and stomach

Answer

the liver and large intestine

Question 9

What does it mean if something is indigestible?

Accepted Answer

It cannot be digested.

Answer

It is already digested.

Answer

It takes a long time to digest.

Answer

None of the above.

Question 10

Which nutrient provides energy storage, insulation, and makes up cell membranes?

Accepted Answer

Lipids

Answer

Protein

Answer

Water

Answer

Carbohydrates

Question 11

Which nutrient is the most vital for the human body?

Accepted Answer

Water

Answer

Fat

Answer

Carbohydrates

Answer

Protein

Question 12

Which nutrient forms the bulk of muscle and connective tissue?

Accepted Answer

Protein

Answer

Water

Answer

Fat

Answer

Carbohydrates

Question 13

Which nutrient is used as energy by cells to perform various functions?

Accepted Answer

Carbohydrates

Answer

Protein

Answer

Fat

Answer

Water

Question 14

What is the largest proportion of the human body?

Accepted Answer

Water

Answer

Fat

Answer

Carbohydrates

Answer

Protein

Question 15

What is the molecule that knows how to assemble amino acids into proteins?

Accepted Answer

DNA

Answer

ATP

Answer

Glycerol

Answer

RNA

Question 16

What nutrient is used to harden bones and teeth?

Accepted Answer

Minerals

Answer

Fat

Answer

Protein

Answer

Carbohydrates

Question 17

Which nutrient is essential for the production of ATP from glucose?

Accepted Answer

B vitamins

Answer

Vitamin D

Answer

Vitamin C

Answer

Vitamin K

Question 18

What is the main fuel molecule used by cells to produce ATP?

Accepted Answer

Glucose

Answer

Protein

Answer

Fat

Answer

Vitamins

Question 19

Which nutrient is responsible for building protein in the body?

Accepted Answer

Amino acids

Answer

Vitamins

Answer

Carbohydrates

Answer

Minerals

Question 20

What is the main nutrient responsible for building muscles and enzymes?

Accepted Answer

Protein

Answer

Fat

Answer

Carbohydrates

Answer

Vitamins

Question 21

Which nutrient is important for various bodily functions but is not used for energy or building blocks?

Accepted Answer

Vitamins

Answer

Minerals

Answer

Protein

Answer

Carbohydrates

Question 22

Which organ is NOT part of the excretory system?

Accepted Answer

Heart

Answer

Skin

Answer

Kidney

Answer

Liver

Question 23

What is the largest organ in the body?

Accepted Answer

Skin

Answer

Kidney

Answer

Liver

Answer

Lungs

Question 24

Which organ removes carbon dioxide from the body?

Accepted Answer

Lungs

Answer

Skin

Answer

Liver

Answer

Kidney

Question 25

What is the main function of the liver in the excretory system?

Accepted Answer

Filter or clean the blood

Answer

Sweat out salt

Answer

Remove urine

Answer

Remove carbon dioxide

Question 26

Why is it important for our body to get rid of wastes?

Accepted Answer

To protect us from toxic chemicals

Answer

To promote healthy digestion

Answer

To conserve water

Answer

To control body temperature

Question 27

Which organs are the most important in the excretory system?

Accepted Answer

Kidneys and large intestine

Answer

Liver and lungs

Answer

Stomach and small intestine

Answer

Skin and heart

Question 28

What is the purpose of the bladder in the excretory system?

Accepted Answer

To store and release urine

Answer

To produce urine

Answer

To absorb water from waste

Answer

To filter blood

Question 29

Where are the kidneys located in the body?

Accepted Answer

Lower back

Answer

Abdomen

Answer

Chest

Answer

Head

Question 30

What is the function of the large intestine in the excretory system?

Accepted Answer

To remove moisture from solid waste

Answer

To remove carbon dioxide

Answer

To filter blood

Answer

To produce urine

Question 31

How does the skin help get rid of waste?

Accepted Answer

Dead skin cells are shed and sweat is removed through pores.

Answer

By breaking down food particles into waste

Answer

By filtering the blood and removing toxins

Answer

By producing urine to eliminate waste

Question 32

Where is the liver located in the body?

Accepted Answer

upper abdomen

Answer

chest

Answer

lower back

Answer

lower abdomen

Question 33

What is the shape of the large intestine?

Accepted Answer

up-side-down "U"

Answer

triangle

Answer

straight line

Answer

circle

Question 34

How many kidneys do humans have?

Accepted Answer

two

Answer

one

Answer

four

Answer

three

Question 35

What is one of the main wastes found in sweat?

Accepted Answer

salt

Answer

water

Answer

blood cells

Answer

carbon dioxide

Question 36

Which gas is constantly being made by the body as a waste?

Accepted Answer

carbon dioxide

Answer

oxygen

Answer

hydrogen

Answer

nitrogen

Question 37

What is the main waste removal organ in the excretory system?

Accepted Answer

Kidney

Answer

Lungs

Answer

Skin

Answer

Liver

Question 38

How long is the large intestine?

Accepted Answer

About five feet

Answer

About one foot

Answer

About two feet

Answer

About ten feet

Question 39

What is the organ that holds up to a pint of urine?

Accepted Answer

The bladder

Answer

The pancreas

Answer

The stomach

Answer

The gallbladder

Question 40

What is the liquid waste called that is taken out of the blood through millions of tubes in the kidneys?

Accepted Answer

Urine

Answer

Sweat

Answer

Tears

Answer

Saliva

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