Food Production Flashcards

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1
Q

Advantages of intensive farming

A
  • Feeding animals high protein foods to increase growth
  • Feed exact nutrients needed
    = less food wasted
  • Restricting the movement of animals so that energy used for movement is minimal and more can be used for growth
  • Less respiration
    = less biomass wasted
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2
Q

Disadvantages of intensive farming

A
  • Animals are in close confinement increases the risk of disease spreading
  • Animals lack of movement
  • Pens/cages can be very small and injure livestock
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3
Q

Define biological control

A

introducing other species to remove pests

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4
Q

Advantages of farming in artificial environments

A

the growing conditions can be monitored and controlled to improve productivity

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5
Q

Describe a hydroponic

A

Soil is replaced by a mineral solution pumped around the plant roots
= Unused minerals are recycled
= Production costs are lower with no pollution risk to waterways

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6
Q

Advantage of hydroponics

A

allows crops to be grown in regions where there’s no soil

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7
Q

How can efficiency of food production improve

A
  • restricting energy transfer from food animals to the environment
  • feed animals high protein food
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8
Q

Ways animal stocks can be protected

A
  • control of ‘net’ size
  • animal quotas so you can’t fish during certain seasons.
  • animal quotas so you can’t catch certain species.
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9
Q

Advantages of micro organisms (eg quorn)

A
  • Much faster – organism population can double in 20mins
  • Easy to handle and manipulate – can be grown in fermenters rather than taking up space in fields
  • Grow large amounts in small amount of space
    = efficient source of protein
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10
Q

Disadvantages of micro organisms (eg quorn)

A
  • taste
  • people know it’s made out of fungus
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11
Q

Main food source of fungi in fermentation

A

Glucose

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12
Q

Why is air bubbled throughout nutrient solution

A

Provides oxygen for respiration

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13
Q

Importance of constantly stirring contents of fermenter

A

Prevent fungus from settling at the bottom

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14
Q

Why must a fermenter have a cooling jacket around it

A
  • respiration transfers thermal energy
  • if temps rise too much fungus would be killed
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15
Q

How is micro protein made

A
  • produced by microorganism of a fungus that’s grown on glucose syrup in a fermentor
  • in aerobic conditions fungus converts glucose syrup into micro protein
  • biomass is harvested and purified before being made into products
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