digestion Flashcards

1
Q

why do we break down and reassemble major nutrients

A

most of the molecules in food are too large

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

function of carbohydrates

A

energy, glucose is main respiratory substrate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

sources of carbohydrates

A

potatoes, rice, bread, fruit, sweets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

function of protein

A

growth and repair

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

sources of protein

A

meat, eggs, cheese

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

function of lipids

A

energy, make up cell membrane
essential for growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

sources of lipids

A

butter, oily fish

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

starch is a _____ of glucose

A

polymer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what are glucose molecules used for

A

respiration
glycogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are proteins made up of

A

amino acids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

where is excess amino acid broken down

A

liver

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

esters

A

type of organic compound formed in the reaction between an alcohol and a carboxylic acid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

food test for sugar

A

add benedict’s solution to food and heat in a water bath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

sugar food test result

A

changes colour to red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

food test for starch

A

add iodine to food being tested

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

starch food test result

A

if it contains starch will turn blue/black

17
Q

food test for protein

A

biuret test
purple colour if protein is present

18
Q

food test for fat

A

Sudan III test
add equal amounts of food and water, add drops of Sudan III.

19
Q

result for fat food test

A

red stained layer forms on surface of water if fat is present

20
Q

function of human digestive system (2)

A

breaks down complex food substances
provides the very large surface area for maximum absorption of food

21
Q

mouth

A

mechanical digestion
amylase for carbs

22
Q

stomach

A

digestion of protein; small molecules such as alcohol absorbed

23
Q

duodenum

A

digestion of carbohydrate and protein; begins the digestion of lipids

24
Q

ileum

A

Completes the digestion of carbohydrates and proteins into single sugars and amino acids

25
large intestine
absorption of water
26
what are enzymes
biological catalysts
27
catalysts
lower activation energy and speed up reactions
28
at what temp do enzymes in our body work best
37°
29
function of saliva in digestion
lubrication to help swallow contains amylase to break down starch