B2 Key words 0.0 / 5 ? Applied ScienceKey wordsGCSEOCR Created by: Roxiss98Created on: 11-03-15 19:43 Enzymes Proteins which act as biological catalyst. 1 of 37 Catalyst A substance which increases the rate of reaction without being changed or used up. 2 of 37 Proteins Proteins are made up of amino acids. 3 of 37 Digestion The breakdown of large, insoluble molecules into smaller, soluble molecules. 4 of 37 The lock-and-key theory The active site maches the shape of the substrate. 5 of 37 Aerobic respiration The chemical reaction that releases energy from glucose when oxygen is available. 6 of 37 Anaerobic respiration An incompile breakdown of glucose. Anaerobic respiration respire without oxygen. 7 of 37 Cramp A build up of lactic acid that causes sharp pain. 8 of 37 Oxygen debt Extra oxygen needed to oxidise lactic acid into carbon dioxide and water. 9 of 37 Nucleus Controls the cell's activities 10 of 37 Cytoplasm Where chemical reactions occur 11 of 37 Cell membrane Controls the movement of materials in and out of the cell 12 of 37 Mitochondria Produces energy. This is when energy is released during aerobic respiration. 13 of 37 Ribosomes Protein synthesis 14 of 37 Cell wall Shapes/supports/protects the cell. It is made of cellulose. 15 of 37 Chloroplasts Contain chlorophyll for photosynthesis; they absorb light energy to make food 16 of 37 Vacuole Contains sap. 17 of 37 Diffusion The movement of particles from high to low concentration. 18 of 37 Muscle tissue Contracts to bring about movement 19 of 37 Glandulat tissue Produces substances such as enzymes or hormones 20 of 37 Epithelial tissue Covers some parts of the body 21 of 37 Epidermal tissue Covers the plant 22 of 37 Mesophyll Can photosynthesise 23 of 37 Xylem and phloem Transport substances (water and glucose) around the plant 24 of 37 Mitosis The type of cell division that produces identical new cells. 25 of 37 Meiosis Sexual reproduction that ocurrs in gametes 26 of 37 Extinction A species which once existed has completely died out. 27 of 37 Differentiation The process be which cells become specialised for a particular function. 28 of 37 Organ system A group of organs working together to carry out a particular function. 29 of 37 Limiting factors Something that stops photosynthesis from happening any faster. 30 of 37 Quodrat A square frame used to measure the distribution of organisms. 31 of 37 Dominant Shown in organisms heterozygous for that trait 32 of 37 Recessive Not shown in organisms heterozygous for that trait 33 of 37 Genotype The alleles that an individual contains 34 of 37 Phenotype The actual characteristics of an individual 35 of 37 Heterozygous Having two different alleles for a gene 36 of 37 Homozygous Having two identical alleles for a gene 37 of 37
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