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Excretion Quiz

otaku96 20 Fragen

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  1. 1What is the correct definition of excretion?
    1. ARemoval of metabolic waste
    2. BRemoval of undigested food
    3. CRemoval of waste via defaecation
    4. DRemoval of amine groups from amino acids
    5. ERemoval of your head from your shoulders
  2. 2What is metabolic waste?
    1. AUndigested food
    2. BToxic compounds produced by bacteria
    3. CWaste substances that may be toxic or are produced in excess by cells
    4. DThe products of cellular reactions
    5. EYour life
  3. 3Why is carbon dioxide toxic? (Choose more than one answer)
    1. AIt is carried in the blood as hydrogencarbonate ions. These are toxic.
    2. BIt is carried in the blood as hydrogencarbonate ions. These dissociate to form hydrogen in red blood cells which competes with oxygen and combines with haemoglobin.
    3. CIt combines directly with haemoglobin and lowers its affinity for oxygen.
    4. DIt is carried in the blood and lowers its pH.
    5. EIt dissolves in the blood plasma and combines with water to give carbonic acid, which dissociates to give hydrogen ions, which lower the pH of the blood.
    6. FIt can enter cells and inhibit respiration.
    7. GIt can cause photorespiration.
  4. 4What is the process of deamination?
    1. Aammonia + carbon dioxide --> urea + water
    2. Bamino acid + oxygen --> keto acid + ammonia
    3. Camino acid + water --> keto acid + oxygen
    4. Damino acid + carbon dioxide --> urea + water
    5. Eamino acid + carbon dioxide --> urea + oxygen
    6. Famino acid + oxygen --> keto acid + water
  5. 5What is the equation for the formation of urea?
    1. Aammonia + carbon dioxide --> urea + water
    2. Bamino acid + oxygen --> keto acid + ammonia
    3. Camino acid + carbon dioxide --> urea + water
    4. Dketo acid + carbon dioxide --> urea + ammonia
    5. Eammonia + oxygen --> urea + carbon dioxide
  6. 6Which of these are functions of the liver? (Choose more than one answer)
    1. AControl of blood amino acid and carbon dioxide levels
    2. BControl of blood amino acid and lipid levels
    3. CControl of blood lipid and carbon dioxide levels
    4. DSynthesis of bile, plasma proteins and glucagon
    5. ESynthesis of bile, plasma proteins and cholesterol
    6. FSynthesis of bile, insulin and cholesterol
    7. GStorage of vitamins A, B and D, iron and glycogen
    8. HStorage of vitamins A, B and D, iron and bile
    9. IStorage of vitamins A, B and D, bile and glycogen
  7. 7What are Kupffer cells?
    1. ALiver cells involved in metabolic processes such as protein synthesis, detoxification, etc
    2. BSpecialised macrophages involved in the breakdown and recycling of red blood cells
    3. CSpecialised phagocytes that engulf and ingest red blood cells
    4. DSpecialised phagocytes involved in the immune system
    5. EMagic
  8. 8What is used and produced in the ornithine cycle?
    1. AUsed: 2 molecules of ammonia, 1 molecule carbon dioxide, 1 molecule water
      Produced: 2 molecules water, urea
    2. BUsed: 2 molecules of ammonia, 2 molecules carbon dioxide, 1 molecule water
      Produced: 1 molecule water, urea
    3. CUsed: 2 molecules of ammonia, 1 molecule water
      Produced: 1 molecule water, urea
    4. DUsed: 1 molecule ammonia, 2 molecules carbon dioxide, 1 molecule water
      Produced: 2 molecules water, urea
    5. EUsed: 2 molecules of ammonia, 1 molecule oxygen, 1 molecule water
      Produced: 2 molecules water, urea
  9. 9What is the process of detoxification of alcohol?
    1. AEthanol --> Ethanal --> Ethanoic Acid --> Acetyl Coenzyme A
    2. BEthanol --> Ethanoic Acid --> Ethanal --> Acetyl Coenzyme A
    3. CEthanol --> Ethanoic Acid --> Lactate --> Acetyl Coenzyme A
    4. DEthanol --> Lactate --> Ethanoic Acid --> Acetyl Coenzyme A
    5. EEthanol --> Ethanal --> Acetate --> Acetyl Coenzyme A
  10. 10What is NAD used for in the liver?
    1. ADetoxification of alcohol and breakdown of fatty acids
    2. BSynthesis of bile and breakdown of fatty acids
    3. CDetoxification of alcohol and synthesis of bile
    4. DDetoxification of alcohol and control of amino acid levels
    5. EControl of amino acid levels and synthesis of bile

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Beschreibung
A Levels Biology Quiz am Excretion Quiz, erstellt von otaku96 am 24/05/2015.
Autor
otaku96
Sprache
English
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