Biology- B7 Part D

Across

• 1. ... 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 (11)
• 4. ... 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 (8)
• 5. ... 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 (11)
• 6. ... 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 (13)
• 9. ... 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 (4, 8)
• 10. Trophic level 4: Contain tertiary consumers- carnivores. carnivores that have no ... are at the top of the food chain and are know as apex ... (9)