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AQA Biology GCSE Past Paper Questions
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- 1Other than improvements in hygiene, give two reasons for the low death rate from infectious diseases in modern hospitals. better knowledge of immunity
better / new drugs
sterilisation of equipment or isolation of patients or some infectious diseases wiped out or earlier identification / treatment of infections - 2Describe how living things are involved in the constant cycling of carbon. green plants photosynthesise
photosynthesis takes in carbon dioxide
plants use carbon to make carbohydrate / protein / fat / organic compounds / named enzymes / cellulose
animals eat plants and other animals
plants and animals respire
respiration releases carbon dioxide
plants and animals die
microorganisms decay / decompose / feed on dead organisms
microorganisms respire
 - 3What is meant by metabolic rate?rate of chemical reactions in the body
- 4Metabolic rate is affected by the amount of activity a person does. Give two other factors that may affect a person’s metabolic rate. inheritance / genetics
proportion of muscle to fat or body mass
age / growth rate
gender - 5Name one plant hormone.auxin
- 6Give the main features of asexual reproduction. no fusion of gametes
only one parent
no mixing of genetic material
no genetic variation or genetically identical offspring - 7Suggest one advantage of using tissue culture and not using cuttings to produce plants.more plants produced from one parent plant
- 8What is a drug?substance that affects body chemistry / chemical reactions in the body
- 9Describe the pathway taken by the nerve impulse in the blink reflex.From light-sensitive cell to connecting neurone to sensory neurone.
Sensory neurone to brain / CNS
Brain / CNS to motor neurone
Motor neurone to eyelid muscle - 10Describe how natural selection could result in modern swordfish with long swords developing from ancestors with short swords.Variation of sword lengths in ancestors
Those with long swords get more food
swordfish (with long swords) survive and breed
(survivors) pass on gene(s) / allele(s) (for long sword)
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- Fichas sobre AQA Biology GCSE Past Paper Questions, creado por hannah ruskin el 22/11/2015.
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