ECONOMIC MICRO-ECONOMIC USES OF ORGANISMS ABBOTTS COLLEGE
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ECONOMIC USES OF BACTERIA 2 PAGE 2.14
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ECONOMIC USES OF BACTERIA 4 PAGE 2.14 Hemp fibre Flax
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ECONOMIC USES OF BACTERIA 5 Biological pest control Eg control
of moth caterpillars Replace pesticides Have no effects on humans
and most other beneficial insects Biological pest control Eg
control of moth caterpillars Replace pesticides Have no effects on
humans and most other beneficial insects PAGE 2.14
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ECONOMIC USES OF BACTERIA 6 Decompose sewage waste to harmless
sludge PAGE 2.14
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ECONOMIC USES OF BACTERIA 8 Food production Eg making cheese
Food production Eg making cheese PAGE 2.14
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ECONOMIC USES OF BACTERIA 10 Make probiotics Dietary
supplements which contain beneficial bacteria that will assist
digestion Eg Lactobacillus and Bifido bacterium PAGE 2.14
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FOR REVISION 12 TEXTBOOK PAGE 2.14 LEARNING ACTIVITY 12:
ECONOMIC USES OF BACTERIA TEXTBOOK PAGE 2.14 LEARNING ACTIVITY 12:
ECONOMIC USES OF BACTERIA
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ECONOMIC USES OF ALGAE 13 Seaweed extracts include:
Phycocolloids found in algal cell walls have gelling properties
Used as gelling agents in food products eg instant puddings and
also in cosmetics, medical drugs and insecticides Thickening and
stabilizing agents eg dairy products, artificial dairy toppings and
canned pet food To make agar plates used in laboratories for
culturing bacteria Seaweed extracts include: Phycocolloids found in
algal cell walls have gelling properties Used as gelling agents in
food products eg instant puddings and also in cosmetics, medical
drugs and insecticides Thickening and stabilizing agents eg dairy
products, artificial dairy toppings and canned pet food To make
agar plates used in laboratories for culturing bacteria PAGE 2.14
agar plate
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ECONOMIC USES OF ALGAE 14 Seaweed extracts include: Plant
growth regulators which control growth and development of plants
Iodine from kelp can be included in mineral salt tablets Natural
pigments can be used as an alternative to chemical dyes and
colouring agents Nutrient extracts used in plant fertilizers
Seaweed extracts include: Plant growth regulators which control
growth and development of plants Iodine from kelp can be included
in mineral salt tablets Natural pigments can be used as an
alternative to chemical dyes and colouring agents Nutrient extracts
used in plant fertilizers
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ECONOMIC USES OF ALGAE 15 Some seaweed is cultivated as a crash
crop Eg Nori used in Sushi rolls Excellent source of minerals and
vitamins Freshly harvested kelp is used to feed cultured abalone
Nutritional supplements can be made from cultivated algae Some
seaweed is cultivated as a crash crop Eg Nori used in Sushi rolls
Excellent source of minerals and vitamins Freshly harvested kelp is
used to feed cultured abalone Nutritional supplements can be made
from cultivated algae Nori abalone kelp
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ECONOMIC USES OF ALGAE 16 Diatomaceous earth A fine sediment
from the walls of dead diatoms Used in toothpaste, sink cleaners
and polishes with low abrasive properties Crude oil and natural gas
are the remnants of photosynthetic products of ancient algae Oil
producing algae are being grown as a potential alternative to
fossil fuels Diatomaceous earth A fine sediment from the walls of
dead diatoms Used in toothpaste, sink cleaners and polishes with
low abrasive properties Crude oil and natural gas are the remnants
of photosynthetic products of ancient algae Oil producing algae are
being grown as a potential alternative to fossil fuels
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ECONOMIC USES OF ALGAE 17 Seaweeds have the potential to
contribute to sustainable employment opportunities and socio-
economic upliftment South Africa has an advantage when it comes to
the marketing of seaweed and its products because our coasts are
pollution free and we have a high biodiversity of seaweeds Seaweeds
have the potential to contribute to sustainable employment
opportunities and socio- economic upliftment South Africa has an
advantage when it comes to the marketing of seaweed and its
products because our coasts are pollution free and we have a high
biodiversity of seaweeds
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FOR REVISION 18 TEXTBOOK PAGE 2.15 LEARNING ACTIVITY 13:
ECONOMIC USES OF ALGAE TEXTBOOK PAGE 2.15 LEARNING ACTIVITY 13:
ECONOMIC USES OF ALGAE
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ECONOMIC USES OF FUNGI 19 As a direct food source eg mushrooms
For the production of biological products such as: Alcohols Plant
growth regulators for plant and fruit development Enzymes Eg
cellulases for industrial use and proteases the active ingredient
of detergents As a direct food source eg mushrooms For the
production of biological products such as: Alcohols Plant growth
regulators for plant and fruit development Enzymes Eg cellulases
for industrial use and proteases the active ingredient of
detergents proteases
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ECONOMIC USES OF FUNGI 20 To produce drugs Eg antibiotics to
fight bacterial and fungal diseases penicillin To produce drugs Eg
antibiotics to fight bacterial and fungal diseases penicillin
Penicillin is one of the most well- known and widely used
antibiotics
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ECONOMIC USES OF FUNGI 21 To produce drugs Drugs to control
haemorrhage after birth eg ergometrine Drugs to control colestrol
levels and ward off coronary heart disease eg statins To produce
drugs Drugs to control haemorrhage after birth eg ergometrine Drugs
to control colestrol levels and ward off coronary heart disease eg
statins
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ECONOMIC USES OF FUNGI 22 For fermentation processes In the
making of yoghurt, maas, bread, beer and wine For fermentation
processes In the making of yoghurt, maas, bread, beer and wine
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FOR REVISION 23 TEXTBOOK PAGE 2.16 LEARNING ACTIVITY 16:
ECONOMIC USES OF FUNGI TEXTBOOK PAGE 2.16 LEARNING ACTIVITY 16:
ECONOMIC USES OF FUNGI