B1b: Human Health and Diet

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Function of carbohydrates
Provides energy
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Functions of fat.(3)
provides energy, acts as an energy store and provides insulation.
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Function of proteins.(3)
Needed for growth and repair of tissue, and to provide energy in emergencies.
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Example of a vitamin and what it prevents.
Vitamin C prevents scurvy.
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Example of a mineral and why its needed.
Iron is needed to make haemoglobin for healthy blood.
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Function of fibre
Keeps the guts in good working order.
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Function of water
Prevents dehydration.
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Why do teenagers need a high protein diet?
because they are rapidly growing.
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What two reasons are there for having deficient protein in developing countries?
Overpopulation and money.
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How does overpopulation explain why many parts of the world are deficient in protein?
Overpopulation means the demand for protein-rich food is greater than thr amount thats available so not everybody gets enough.
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How does money explain why many parts of the world are deficient in protein?
There's not much money to invest in agriculture, without the best farming techniques it's difficult to produce enough protein-rich food for everyone.
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What are carbohydrates made up of?
Simple sugars like glucose.
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Where are carbohydrates stored? and what as?
In the liver as glycogen or converted to fats.
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What are fats made up of?
Fatty acids and glycogen.
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How can fats be stored? and as what?
Under the skin and around organs as adipose tissue.
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What are proteins made up as?
Amino acids.
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How can proteins be stored?
They can't be stored.
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What four things can being obese increase the risk of?
Arthiritis, Heart Disease, Diabetes and Breast Cancer.
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What factors decide what a balanced diet is for a certain person?(6)
Age, gender, physical activity, religion, personal choice and medical issues.
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What is kwashoirkor caused by?
Protein deficiency.
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How do you calculate a persons estimated average daily requirement of protein?(EAR)
EAR in g = 0.6 x body mass in kg.
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How do you calculate the Body Mass Index? (BMI)
BMI = body mass (kg)/(height)2 (m)
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What does the BMI indicate?
It is a guide to decide whether someone is underweight, normal, overweight or obese.
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What can low self-esteem, poor self-image and the desire to be perfect lead to?
A poor diet.
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What can a poor diet lead to?(8)
Liver and Kidney failure, Heart attacks, Muscle wastage, Low blood pressure, Mineral Deficiency. Bulimia can cause tooth tecay and can be fatal.
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How do vegetarians get their protein?
By eating a range of plant sources, as they don't contain the essential amino acids unlike animal proteins.
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What are second class proteins?
Plant proteins.
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What are first class proteins?
Animal proteins.
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Why does a women who is lactating need extra protein?
To produce milk.
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Why does EAR vary during pregnancy?
Need more protein to help the baby grow.
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Other cards in this set

Card 2

Front

Functions of fat.(3)

Back

provides energy, acts as an energy store and provides insulation.

Card 3

Front

Function of proteins.(3)

Back

Preview of the front of card 3

Card 4

Front

Example of a vitamin and what it prevents.

Back

Preview of the front of card 4

Card 5

Front

Example of a mineral and why its needed.

Back

Preview of the front of card 5
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