digestive system

Question 1

large insoluble molecules - 3

Answer 1

starch, protein, fats

Question 2

small soluble molecules - 4

Answer 2

sugars, amino acids, glycerol, fatty acids

Question 3

amylase

Answer 3

turns starch to maltose

Question 4

maltase

Answer 4

turns maltose into glucose

Question 5

proteases

Answer 5

turns proteins into amino acids

Question 6

lipases

Answer 6

turns lipids into fatty acids and glycerol

Question 7

where is bile produced

Answer 7

liver

Question 8

where is bile stored

Answer 8

gall bladder

Question 9

where is bile released to

Answer 9

small intestine

Question 10

is bile acidic or alkaline

Answer 10

alkaline - for enzymes in intestines

Question 11

what does bile do - 2

Answer 11

neutralises stomach acid and emulsifies fats

Question 12

why is fat emulsified

Answer 12

for larger surface area for faster work of lipase to turn fat into glycerol + fatty acids

Question 13

peristalsis

Answer 13

muscular tissue down alimentary canal squeezes food through your gut in circular muscle contractions

Question 14

digestion in mouth - 2

Answer 14

mechanical
-teeth break down food
-salivary glands produce amylase enzyme in saliva

Question 15

oesophagus role

Answer 15

muscular tube that connects mouth and stomach

Question 16

stomach roles -3

Answer 16

-pummels food with muscular walls
-produces protease
-produces hydrochloric acid

Question 17

large intestine/colon role

Answer 17

excess water is absorbed from food

Question 18

why does the stomach produce hydrochloric acid

Answer 18

-to kill bacteria
-optimum ph for protease enzyme (2)

Question 19

pancreas role

Answer 19

produces the enzymes:
-protease
-amylase
-lipase
into the small intestine

Question 20

small intestine role - 2

Answer 20

-uses enzymes: protease, amylase, lipase
-where nutrients are absorbed out of the body

Question 21

what are the 2 parts of the small intestine

Answer 21

duodenum, illium

Question 22

role of rectum

Answer 22

where faeces are stored until leaving through anus

Question 23

how are villli adapted for absorption - 3

Answer 23

-long-large sa:v
-permeable 1-cell layer- short diffusion distance
-long- time to break down + absorb a;; food