2.3 - Energy & Waste

Question 1

Your body’s way of telling you that it needs food.

Answer 1

Hunger

Question 2

The amount of energy in food is measured by

Answer 2

Calories

Question 3

The amount of energy it takes to raise 1KG of water by 1C.

Answer 3

Calorie

Question 4

Releases the energy from the processed food.

Answer 4

Your digestive system

Question 5

The parts of food used by the body to grow and survive.

Answer 5

Nutrients

Question 6

5 examples of Nutrients

Answer 6

ingestion, digestion, absorption, and elimination.

Question 7

When you chew, mash, and grind food with your teeth and tongue.

Answer 7

Mechanical Digestion

Question 8

Break down pieces of food into small molecules.

Answer 8

Chemical Digestion

Question 9

When you put food, such as bread, into your mouth.

Answer 9

Ingestion

Question 10

An enzyme, in your mouth, that helps break down carbohydrates.

Answer 10

Saliva

Question 11

A muscular tube that connects the mouth to the stomach.

Answer 11

Esophagus

Question 12

Food moves through the esophagus and the rest of the digestive tract by waves of muscle contractions.

Answer 12

Peristalsis

Question 13

A large, hollow organ that stores food.

Answer 13

Stomach

Question 14

An adult stomach can hold about __________ of food and liquid.

Answer 14

2 Liters

Question 15

Enable the stomach to expand and hold large amounts of food.

Answer 15

The folds on the inner walls

Question 16

The cells in these folds produce chemicals that help break down _____________ .

Answer 16

Proteins

Question 17

This stomach fluid makes the stomach acidic.

Answer 17

Gastric Juice

Question 18

An enzyme that helps break down the proteins in foods into amino acids.

Answer 18

Pepsin

Question 19

A long tube that is connected to the stomach. It is about 7 m (23 ft) long.

Answer 19

Small intestine

Question 20

Fingerlike projections that cover the folds of the small intestine.

Answer 20

Villi

Question 21

Nutrients enter the blood through blood vessels in this digestive organ .

Answer 21

Small intestine

Question 22

Also known as, the colon.

Answer 22

Large intestine

Question 23

It is about 1.5 m (5 ft) long. it has a larger diameter (about 5 cm or 2 in) than the small intestine.

Answer 23

Large intestine

Question 24

Where water is absorbed, leaving behind semisolid waste.

Answer 24

Large intestine

Question 25

The last section of the large intestine, about 8 inches long.

Answer 25

Rectum

Question 26

The final opening or “exit door” of the digestive system.

Answer 26

Anus

Question 27

The semisolid waste that is ready to leave the digestive system.

Answer 27

Feces

Question 28

Removes liquid waste from the body.

Answer 28

Urinary System

Question 29

Beanshaped organs the filter, or remove, waste from blood.

Answer 29

Kidneys

Question 30

Ureters form the kidneys deliver liquid waste to this organ that is like a

Answer 30

Bladder

Question 31

Liquid waste leaves the body from this small tube that is connected to the

Answer 31

Urethra