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Card 16
Front
Why do the number of phytoplankton and zooplankton vary in different seasons?
Back
Card 17
Front
What are the three main food sources that are relied on by food webs?
Back
Card 18
Front
Why can some chemicals like PCBs and DDT kill animals at the top of the food chain?
Back
Card 19
Front
What are enzymes used for in washing powders (give specific examples)?
Back
Card 20
Front
Why do biological washing powders wok best at moderate temperatures?
Back
Card 21
Front
What happens to the products after digestion with washing powder?
Back
Card 22
Front
Which enzyme breaks down sucrose?
Back
Card 23
Front
What happens to sucrase once it is broken down by the enzyme?
Back
Card 24
Front
How can enzymes be immobilised in gel beads?
Back
Card 25
Front
Why are immobilised enzymes useful?
Back
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