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Diet and food production
- Balanced diet
- Carbohydrates, fats,
proteins, vitamins, minerals,
water and fibre
- Malnutrition is from not
getting the right amount of
each nutrient.
- Not having enough food
- Unbalanced diet
- Not being able to
absorb the nutrients.
- Not having enough food
- Obesity
- Being 20% over the
recommened body
weight
- Too much sugary or fatty
food and too little exercise.
Can cause diabetes,
arthritis, high blood pressure,
CHD and cancer
- Being 20% over the
recommened body
weight
- A diet high in saturated fats raise
blood cholesterol level. Increase fatty
deposits in the arteries which cause
atherosclerosis. A diet high in salt
can cause high blood presure.
- HDL are mainly protein. Transports cholesterol from
body tissue to the liver. Functioned to reduce blood
cholesterol. LDL are mainly lipid. Transports
cholesterol from liver to the tissues. Functioned to
increase cholesterol levels
- Saturated fats increase LDL's.
Unsaturated increases HDL's
- Saturated fats increase LDL's.
Unsaturated increases HDL's
- Carbohydrates, fats,
proteins, vitamins, minerals,
water and fibre
- Food production
- Plants
- Humans depend on plants for food
as they are the start of the food
chain. For direct consumption or
feed to animals
- Humans depend on plants for food
as they are the start of the food
chain. For direct consumption or
feed to animals
- Fertilisers and pestisides
- Fertilisers are chemicals that increase
crop yields by providing (nitrate,
phosphate, potassium) that plants need
to grow. They replace the minerals lost
from previous crops
- Pesticides are chemicals that increase
crop yield by killing pests that feed on
crops. Fewer plants are destroyed. Can
be specific to an organism
- Fertilisers are chemicals that increase
crop yields by providing (nitrate,
phosphate, potassium) that plants need
to grow. They replace the minerals lost
from previous crops
- Antibiotics
- Given to animals to inhibit the growth of
bacteria. Help treat or prevent disease.
Increases food production, growth and size.
- Given to animals to inhibit the growth of
bacteria. Help treat or prevent disease.
Increases food production, growth and size.
- Selective breeding
- Selecting plants or animals with good
characteristics that will increase yield
and breed them. Select offspring with
the characteristics and breed.
Continue over generations so
characteristics exaggerate
- Selecting plants or animals with good
characteristics that will increase yield
and breed them. Select offspring with
the characteristics and breed.
Continue over generations so
characteristics exaggerate
- Plants
- Microorganisms
- Prevent food spoilage
- Salting and sugaring
inhibits that ability for
microorganisms to
absorb water.
- Freezing slow the
growth of
microorganisms
down, inhibits their
growth
- Pickling reduces
enzyme activity so
they can't function
- Pasteurising and
irradiation kills any
microorganisms present
- Salting and sugaring
inhibits that ability for
microorganisms to
absorb water.
- Pro/Con
- Pros: Food can be
produced quickly.
Grown on inexpensive
materials. Grow
anywhere at anytime.
Lasts longer
- Cons: High risk of
food contamination.
Small changes can
kill the
microorganisms.
Doesn't taste like
traditional protein
- Cons: High risk of
food contamination.
Small changes can
kill the
microorganisms.
Doesn't taste like
traditional protein
- Pros: Food can be
produced quickly.
Grown on inexpensive
materials. Grow
anywhere at anytime.
Lasts longer
- Used to make food
- Bread, wine, cheese, yoghurt
- Bread, wine, cheese, yoghurt
- Prevent food spoilage
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