B3 - Managing Food Production Flashcards
Why are growing crops better than growing animals?
Less stages in the food chain so more energy is transferred.
How can we restrict the energy lost by farm animals?
By putting them close together.
Why does battery farming animals improve the efficiency?
Animals are kept warm and can’t move.
More energy is transferred to growth.
Money is saved from heating and food costs.
Name a new food source.
Mycoprotein.
What is mycoprotein used for?
Meat substitute for vegetarian meals.
What is the main source of mycoprotein?
Fusarium fungus.
How is mycoprotein grown?
In fermenters using glucose syrup as food.
How is the glucose syrup to feed the Fusarium fungus obtained?
From digesting maize starch with enzymes.
What is supplied to the Fusarium fungus and why? [2]
Oxygen because it respires aerobically.
Nitrogen & other minerals.
Why is it important that the mycoprotein fermenter is sterile?
To prevent other microorganisms growing.
How is a mycoprotein fermenter sterilised? [2]
1) heat sterilising the nutrients.
2) filtering the air supply.
What happens to the mycoprotein after it has been produced? [2]
It is harvested & purified.
What are the advantages of mycoprotein?
1) feeds on waste.
2) grows quickly.
3) you can obtain protein without needing space for farm animals.
What happens as you add a stage to the food chain? [2]
Less energy & less biomass.
