digestion

Question 1

why is digestion needed

Answer 1

to breakdown large molecules to smaller ones so they can be absorbed and used by body cells

Question 2

what big insoluble molecules are too big to cross the _____ ___________ so they cant be ____________ from the _____into the ________
what breaks them down and into what and example

Answer 2

starch, proteins and fats
cell membrane, absorbed, gut, blood
digestive enzymes into sugars, amino acids, glycerol, fatty acids

Question 3

give an example where smaller soluble molecules that easily cross ____ ____________ are _______________ around to be used by ______ ______

Answer 3

cell membranes, transported, body cells
respiration

Question 4

what do carbohydrases convert (and example) and into what with the use of enzymes

Answer 4

carbohydrates
e.g starch into glucose

Question 5

what do proteases convert and into what with the use of enzymes

Answer 5

proteins to amino acids

Question 6

what do lapases convert and into what with the use of enzymes

Answer 6

lipids to glycerol and fatty acids

Question 7

where is bile produced then stored before released into where

Answer 7

liver, gall bladder, small intestine

Question 8

how does bile increase the rate of digestion

Answer 8

as it emulsifies fat which gives a bigger surface area of fat for enzyme lipase to work on

Question 9

what is the benefit for bile being an alkaline

Answer 9

as the hydrochloric acid in the stomach makes the pH too acidic for enzymes (e.g lipase) in the small intestine to work properly as they work best in alkaline conditions in therefore bile neutralises the acid, making conditions alkaline