8A FOOD & ADVERTISING Flashcards
REVISING FOR TEST
what does diet mean in science
what you eat
what food substances provide raw materials
nutrients
what are the five different nutrients called
carbohydrate, fats, protein, vitamins, minerals
what are the two main carbohydrates in food
starch and sugars
what are two different examples of sugar
glucose and sucrose
what is liquid fat called
oil
what is lipids
oil
how does water benefits us
cools you down when you sweat
fills up cells so they keep their shape
how does fibre benefits us
helps food move through our intestines without getting blocked
how does fats benefits us
Fats provide a source of energy protect organs
how does carbohydrate benefits us
Carbohydrates provide energy and help regulate blood sugar levels.
how does minerals benefits us
Minerals are essential for bone health, oxygen transport, and nerve function.
how does proteins benefits us
Proteins are for building and repairing cells and supporting immune function.
how does vitamins benefits us
Vitamins help in immune function, skin health, and maintain good vision and bone strength.
why do food labels need to show how much of something is per 100g (EXAMPLE)
Food labels provide standardized information for customers to compare different products.
how do you test for starch in a food
Use iodine solution. If starch is present, it will turn a blue-black color.
how do you test for fats in a food
rub food on paper some grease marks would appear if fat is present
how do you test for protein in a food
Use the Biuret test. A purple color forms when proteins are present.
name 3 food that is high in protein
milk, meat, eggs
name 3 food that is high in fats
butter, oils, fatty meat
name 3 food that is high in carbohydrates
potatoes, rice, bread
what are energy in food measured in
kilojoules (KJ)
what are three factors that changes the amount of energy you need per day
Age, gender, physical activity level.
symptom and cause of kwashiorkor
Large belly caused by a lack of protein
symptom and cause of night blindness
not being able to see well in low light caused by a lack of vitamin A
symptom and cause of rickets
Weak bones do not form properly caused by a lack of Vitamin D
why do people get starvation
starvation is caused by a lack of nutrition
symptom and cause of scurvy
painful joints and bleeding gums are caused by Lack of Vitamin C
why do people get obesity
Obesity is when you are getting more energy than needed and the extra energy stores as fat
symptom and cause of anaemia
Tiredness and shortness of breath are caused by a lack of Iron
what is step 1 of digestion
putting food into the mouth and then your teeth with your saliva breaks the food down
what is step 2 of digestion
food enter oesophagus and the muscle in it pushes the food to the stomach
what is step 3 of digestion
the stomach muscles and the stomach acid in the stomach churns up the food
what is step 4 of digestion
the food move to the small intestines where the nutrients in the food is absorbed
what is step 5 of digestion
the large intestines absorbs the water from the food
what is step 6 of digestion
in the rectum the faeces is stored then disposed out the anus
what is the use of saliva
breakdowns food for easier swallowing using amylase within it
what is the use of salivary glands
produce saliva
what is the use of teeth
mechanically breaking down the food
what is the use of oesophagus
transport the food from mouth to stomach
what is the use of small intestines
absorb nutrients in the food into the blood
what is the use of the stomach
The stomach churns food, and mixing it stomach acid within it
what is the use of large intestines
absorb water from the food
what is the use of rectums
stores the waste until they are ready for excretion
what are enzymes and catalysts jobs
speeds up chemical reactions
how is the small intestines adapted to its functions
by having a large surface area so it can absorb more nutrients
name 3 food that is high in fibre
berries, beans, whole wheat bread
why does the body need to digest food
to break food down into smaller molecules that can be absorbed and used It also helps eliminate waste products.
