7.2 and 7.3

Question 1

ingestion

Answer 1

the taking of food and drink into the body

Question 2

physical digestion

Answer 2

the breakdown of food into smaller pieces without chemical change to food molecule

Question 3

chemical digestion

Answer 3

the breakdown of large insoluble molecules into small soluble molecules

Question 4

digestion

Answer 4

the breakdown of food

Question 5

absorption into bloodstream

Answer 5

the movement of nutrients from the intestine into the blood

Question 6

assimilation

Answer 6

uptake and use of nutrients by cells

Question 7

egestion

Answer 7

the removal of undigested food from the body as feaces

Question 8

where is hydrochloric acid released from

Answer 8

stomach wal

Question 9

roles of hydrochloric acid

Answer 9

-kill bacteria
-provide optimum pH for pepsin to digest protein

Question 10

Bile

Answer 10

emulsifies fats which give more surface area for the enzyme lipase to work on

Question 11

why is it neccesary for most type of food that we eat to be digested

Answer 11

digestion break down foods into nutrients which then our body uses for energy, growth and repair