AQA GCSE Food tech part 1

chapter 1

what are amino acids

the bodies building blocks

what do amino acids make up

protein

what are the uses of protein

growth

repair

maintenance

secondary source of energy

HBV proteins have…

all the essential amino acids

what are sources of HBV protein

chicken, salmon, eggs

LBV proteins have

some of the essential amino acids humans need

what are example of LBV protein

cereals, pulses, nuts

the average male and female should have how much protein per day

male-55g daily female-45g daily

how much more protein do women need per day when pregnant

6g more

what can happen if you have too much protein

strain in liver and kidneys

what can happen if you have too little protein

slowed growth, poor digestion

why do we need fats

to provide energy

cholesterol

source of vitamins

provide insulation

what are the 2 types of fatty acids

saturated and unsaturated

what is the structure of saturated fatty acids

contain single c-c bond only

what is the structure of unsaturated fats

contain one or more c=c double bond

are saturated or unsaturated fats more healthy

unsaturated

by having more saturated fats we increase chances of

heart disease

where do we mostly get saturated fats from

animal sources e.g. beef and dairy and palm oil as a plant source

saturated fats tend to be what form at room temperature

solid

where do we get unsaturated fats from

vegetable sources with high fat content

what are some example of unsaturated fats

pecans, pumpkins seeds and avocado’s

what state do unsaturated fats tend to be at room temperature

soft or liquid

what two types of unsaturated fats are there

mono-unsaturated and poly-unsaturated

what is the structure of monounsaturated fats and what are the sources

-one c=c double bond

-hazelnuts and avocados

what is the structure of polyunsaturated fats and what are the sources

-2 or more c=c double bonds

-walnuts and flax seed

how can someone lower their cholesterol

by eating more unsaturated fats