Transcript Review - Belle Vernon Area School District

Water
Water
Food
General
Fermentation
Treatment
Production Questions
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What is the type of that looks
drinkable but is not?
Contaminated water
Why is water treatment important?
Water is needed for everyday living
What does BOD stand for
Biological oxygen demand
What is drinkable water known as?
Potable
Why are rivers and other bodies of
water known as Self water
purification
Help to convert organic material into
inorganic material
What is the goal of primary
treatment
Removal of solid particle from water
What is the goal of secondary
treatment?
Removal of pathogenic bacteria and
viruses
What is the goal of tertiary
treatment?
Removal of nitrates to prevent
eutrotiphication, but is expensive
and rarely preformed.
What is mineralization?
In nature aerobic microorganism
convert organic material to inorganic
material.
What is FLOC?
Is the puffy accumulations after
alum is added
Fermentation occurs both desirable
and undesirable.
True
What did the Sumerians ferment and
when?
Cheese, 6000 BC
How much alcohol is in wine?
Up to 6%
What gas is produced when Yeast
ferments grapes?
CO2
Why are hops added to beer?
Flavoring
What are some ways to prevent
infection from microorganisms?
1.Temperature
2. pH
3. Intrinsic Factors (Shells,
coverings)
4. Water availability
What is soy sauce made from?
Fungi and bacteria
In cheese production there is a solid
and a liquid. What is each called
and used for?
Solid – curd – cottage cheese
Liquid – whey - cheese
In food posioning, what does
botulism produce?
Neurotoxin
What type of yeast is used to make
beer?
Brewer’s yeast
What percent of acid is vineagr
4%
How long does bottom fermentation
take in beer production?
8-14 days
In milk production what production
is used to clump milk proteins
together?
Renin
Why is chlorine added to the water
supply?
To kill anything that might of made
it through the treatments
What is ALUM stand for and why is
it used in water treatments?
Alum is a combination of aluminum
and sulfate, used to clump together
smaller suspended particles (bacteria
& viruses) to settle out.