Biology- B7 Part D

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  • Created by: 13clarken
  • Created on: 07-06-18 21:24
Trophic level 1: Contains ... at the start of the food chain
Producers
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Trophic level 2: Contains primary consumers - ...-> They only eat plants
Herbivores
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Trophic level 3: Contains secondary consumers - ...-> The meat eater
Carnivores
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Trophic level 4: Contain tertiary consumers- carnivores. carnivores that have no ... are at the top of the food chain and are know as apex ...
Predators
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... such as bacteria and fungi are important in ecosystems. They ... any dead animal or plant material left in the environment. To do this they release enzymes that break the material down
Decomposers
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... of ... show the mass of each trophic level. they are usually ... shape. Each bar represents a trophic level -> Bottom bar = trophic level 1. Always draw them to scale
Pyramids biomass
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... transfer: ... is transferred through trophic levels, but only 10%. The rest is used in the past trophic level for respiration, movement, growth, etc. Efficiency of ... transfer =... transferred to next level/... available at previous level x 100
Biomass
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... is having enough food to feed a population. Factors affecting ... : -World population increasing -Demand for certain foods increased -Farming affected by new pests or pathogens -Input costs for farming are too high -Conflict
Food security
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... is decreasing fish stocks, so to conserve fish stocks we need to use: -Fishing Quotas -> limits number and sizes of fish caught -Net Sizes-> Reduces the number of unwanted fish and lets young fish escape so they can breed
Overfishing
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... production can be made more efficient by limiting movement of livestock so that more energy is passed on to net trophic level. More energy also available for growth so there is more ... produced 1)Livestock and fish can be factory farmed
Food
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... is used to make high-protein meat substitutes for vegetarians. Its made from fungus ->grown in aerobic conditions. Harvested and purified to produce ...
Mycoprotein
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... can produce human insulin: 1)Plasmid is removed from ... 2)Insulin gene cut out of human using restriction enzyme and has sticky ends 3)Plasmid cut out with same restriction enzyme and has sticky ends 4)Plasmid & human insulin mixed together
Bacteria
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... can help as: 1)GM crops can be produced and be resistant to pests 2)They can grow better in drought conditions 3)Crops can be modified to provide nutritional value. However: 1)People argue people go hungry as they cant afford to but it
Biotechnology
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Other cards in this set

Card 2

Front

Trophic level 2: Contains primary consumers - ...-> They only eat plants

Back

Herbivores

Card 3

Front

Trophic level 3: Contains secondary consumers - ...-> The meat eater

Back

Preview of the front of card 3

Card 4

Front

Trophic level 4: Contain tertiary consumers- carnivores. carnivores that have no ... are at the top of the food chain and are know as apex ...

Back

Preview of the front of card 4

Card 5

Front

... such as bacteria and fungi are important in ecosystems. They ... any dead animal or plant material left in the environment. To do this they release enzymes that break the material down

Back

Preview of the front of card 5
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