B3 Exam Questions edexcel

Some questions selected from B3 Structured June 2008 (edexcel exam board) and the answers

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  • Created by: Elouise
  • Created on: 02-04-12 14:57

Explain what is meant by the term ‘anthropomorphic

"Explain what is meant by the term ‘anthropomorphic’" (2)

  • Give a definition:

Giving animals/non-human objects human characteristics:

  • Give an example:

Cartoon animals speaking/driving. 

1 of 7

Suggest two reasons why humans keep animals as pet

"Suggest two reasons why humans keep animals as pets" (2)

Any two of:

  • Companionship / Entertainment
  • Reduce stress / Health benefits 
  • Protection
  • Assist with work
  • Status
  • Products eg eggs, milk.
2 of 7

What is the natural source of quinine? (1)

What is the natural source of quinine? (1)

  • The bark of the cinchona tree
3 of 7

Suggest one reason why plant extracts are carefull

Suggest one reason why plant extracts are carefully tested before use on humans. (1)

One of:

  • May be toxic
  • May have side-effects
  • Could be harmful
  • May cause allergic reactions
  • To test if it is effective 
4 of 7

Describe some ways that the supply of artemisinin

Describe some ways that the supply of artemisinin could be increased. (3)

Any three from:

  • Grow more Artemisia 
  • Use genes from Artemisia to genetically modify other plants
  • GM/ selectively breed Artemisia to increase concentration of Artemisinin/ grow faster
  • Improve efficiency of extraction technique
  • use GM micro organisms to produce Artemisinin
  • Tissue Cluture
  • use of transgenic animals
5 of 7

Describe the stages in the production of soy sauce

Describe the stages in the production of soy sauce (4 marks)

Any four in the correct sequence from:

  • cook soya bean;
  • mix with (ground) roasted wheat;
  • ferment with Aspergillus ;
  • brine is added;
  • yeast and/or Lactobacillus added;
  • second fermentation/refermentation;
  • filtered;
  • pasteurisation;
  • use sterile bottle;
6 of 7

Explain how prebiotics benefit the human body. (3)

Explain how prebiotics benefit the human body. (3)

  • Increase/stimulate the growth of (friendly) bacteria;
  • Decrease the growth of bad bacteria;
  • Health benefits related to above e.g reduction of toxins from bad bacteria/increasing B vitamins from good bacteria;
7 of 7

Comments

fatima

was good but add more for 5stars..

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