2.3 energy and waste

Question 1

the amount of energy in food is measured in calories

Answer 1

calorie

Question 2

the amount of energy it takes to raise the temperature of 1 kg of water by 1’c.

Answer 2

calorie

Question 3

releases the energy from the processed food

Answer 3

your digestive system

Question 4

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

Answer 4

nutrients

Question 5

5 examples of nutrients

Answer 5

proteins fats carbohydrates vitamins and minerals

Question 6

the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use

Answer 6

digestion

Question 7

the 4 steps of digestion

Answer 7

ingestion digestion absorption and elimination

Question 8

when you chew mash and grind food with your teeth and tongue

Answer 8

mechanical digestion

Question 9

break down pieces of food into small molecules

Answer 9

chemical digestion

Question 10

when you put food such asbread into your mouth

Answer 10

ingestion

Question 11

an enzyme your mouth that helps break down carbohydrates

Answer 11

saliva

Question 12

a muscular tube that connects the mouth to the stomach

Answer 12

esophagus

Question 13

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

Answer 13

peristalsis

Question 14

a large hollow organ that stores foods

Answer 14

stomach

Question 15

an adult stomach can hold about __________of food and liquid

Answer 15

2 liters

Question 16

enable the stomach to expand and hold large amounts of food

Answer 16

the folds on the inner walls

Question 17

fluid make the stomach the cells in these folds produce chemicals the help break down

Answer 17

proteins

Question 18

the stomach fluid makes the stomach acidic

Answer 18

gastric juice

Question 19

an enzyme that helps break down the proteins in foods into amino

Answer 19

pepsin

Question 20

a long tube that is connected to the stomach it is 7m 23ft long

Answer 20

small inestine