GCSE Science A Biology 1 Higher Tier Biology 1H SPECIMEN MARK SCHEME Version 1.0. Rated A+

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COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 question answers extra information mark 1(a) ovary 1 1(b) womb / uterus 1 1(c) fertility 1 Total 3 quest... ion answers extra information mark 2 gravity caused redistribution of auxin / hormone to lower side of stem these hormones stimulate growth of cells on the lower side of the stem only so the stem grows upwards accept gravitropism / geotropism 1 1 1 1 Total 4GCSE Science A Biology 1 Specimen Mark Scheme Higher Tier V1.0 COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 question answers extra information mark 3(a) most leaves lie close / flat on the ground therefore the leaves are less likely to be eaten / mown or thick root (1) therefore the plant is less likely to be pulled out by grazers (1) reason must be linked to adaptation given 1 1 3(b) long stems therefore the plant is a better competitor for light or therefore the plant grows higher than other plants to gain light or wide spread roots (1) therefore the plant is a better competitor for water or therefore the plant is able to collect water from a larger area (1) 1 1 Total 4GCSE Science A Biology 1 Specimen Mark Scheme Higher Tier V1.0 COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 question answers extra information mark 4(a) live inside cells inactive antibodies 1 1 1 4(b) the percentage of children vaccinated fell to zero in 1995 but the number of children developing autism rose and fell during the period when % vaccinations was falling number of children developing autism peaked after MMR vaccination had ceased which suggests that something other than MMR vaccination was causing autism 1 1 1 1 Total 7GCSE Science A Biology 1 Specimen Mark Scheme Higher Tier V1.0 COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 5 Marks awarded for this answer will be determined by the Quality of Written Communication (QWC) as well as the standard of the scientific response. Examiners should also refer to the information on page 2. 0 marks Level 1 (1-2 marks) Level 2 (3-4 marks) Level 3 (5-6 marks) No relevant content. There is a brief explanation of at least two ways in which the energy captured by the heather is transferred, which has little clarity and detail. Credit may be awarded either for references to general ways in which organisms transfer energy or to ways in which specific organisms in the food web transfer energy. There is some explanation of a range of the ways in which the energy captured by the heather is transferred. Credit may be awarded either for references to general ways in which organisms transfer energy or to ways in which specific organisms in the food web transfer energy. There is a clear, balanced and detailed explanation of a large variety of ways in which energy captured by the heather is transferred Credit may be awarded either for references to general ways in which organisms transfer energy or to ways in which specific organisms in the food web transfer energy. examples of biology points made in the response • respiration releases energy (allow this point even if given for named organism) NB: to gain full marks, candidates must gain this mark. • some energy lost in animals / named animal’s waste materials • some energy used in maintenance / repair (allow this point if given for named organism) • some energy used for movement (allow this point if given for named animal) • energy lost as heat to surroundings (allow this point if given for named organism) • some organisms die (rather than being eaten) (allow this point if given for named organism) • reference to detritivores / microbes Total 6GCSE Science A Biology 1 Specimen Mark Scheme Higher Tier V1.0 COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 question answers extra information mark 6(a) idea that bacteria mutate or that there is variation in bacteria leading to bacteria /resistant cells that survive antibiotic these bacteria (resistant cells) go on to breed do not allow bacteria get used to antibiotics or idea that antibiotics change the bacteria or bacteria become immune or references to adaptation or evolution 1 1 1 6(b) the treated animals do not use energy overcoming illness an economic reason, eg treated animals do not infect other animals / farm workers 1 1 Total 5GCSE Science A Biology 1 Specimen Mark Scheme Higher Tier V1.0 COMPONENT NUMBER: BL1HP COMPONENT NAME: GCSE Science A Biology 1H STATUS: Specimen V1.0 question answers extra information mark 7(a) because there is insufficient data for line graph 1 7(b) injection with no testosterone 1 7(c) the performance of testosterone group improved more than that of placebo group quantitative figure given, eg about 4 times greater 1 1 7(d) (no) there was a significant improvement after 6 weeks allow significant improvement after 3 weeks [Show More]

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