Bacteria and Skin / Blood Clotting / Tears / Stomach Acid Essay

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General Certificate of Secondary Education 2011

Science: Biology Paper 1 Foundation Tier
[G0901]
THURSDAY 19 MAY, AFTERNOON

MARK SCHEME

6410.01

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(a) Root absorb light/photosynthesis; reproduction/produce seeds; (b) Support; Transport water/food;

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(a) Grass, Earthworm, Fox; arrows; (b) Sun(light); Grass/blackberry; (c) Mole number would increase;

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(a) A – Oviduct/fallopian tube; B – Uterus; C – Cervix; (b) To produce eggs/ova; (c) X in cervix/vagina;

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(a) Quadrat; (b) 9 4 25 3 100 (accept 9 3 4); 5 36; (c) Make sample representative/reduce bias; (d) Animals move;

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[Turn over

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(a) Any TWO from: Cytoplasm: more cytoplasm in normal/less in cancer cells; Nucleus: only one nucleus in normal, more than one in cancer; Lighter nucleus in normal, darker in cancer; Irregular nucleus in cancer cells; Cell shape: more rounded in normal, irregular in cancer (b) Surgical/chemotherapy/radiotherapy; (c) Benign has a capsule/does not spread; More easily removed; (Allow converse for malignant)

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(a) Change during puberty Menstruation Voice deepens Development of breasts Growth of pubic hair Yes No Yes No Yes Yes [1] [1] [1] Male Female

(b) Breakdown of the uterus lining; Released through the vagina; 7 (a) (i) Mucus traps microbes/dust; Cilia move mucus (out of lungs); (ii) Skin/blood clotting/tears/stomach acid; (b) (i) Injection; of dead/weakened microbes; (ii) Jenner;

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(a) Scales; Gills; Not constant; Internal; (b) Any TWO from: Reptile shelled (leathery) egg, amphibia jelly egg; Reptile eggs on land, amphibia eggs in water; Reptiles dry scales, amphibia moist skin; (Must be a comparison/comparative term)

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(a) Water; Chlorophyll; Sugar/glucose/starch;

(b) Any PAIR [mineral + appropriate use] from: Calcium; Cell walls; OR Magnesium; Chlorophyll; OR Nitrate; Growth/protein production/amino acid production; [2] 10 (a) Carbohydrates; Proteins; (b) Protects baby from infection/confers immunity; (c) Any TWO from: Convenience (correct temp/no sterilising
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