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ib biology answer key ib cells genetics 2.7 7.3 cell theory 1.1 organelles chromosomes 7.1 dna 1.2 transcription translation protein synthesis metabolism climate change stem cells 1.4 cell transport endosymbiosis cell division mitosis 1.6 origins of cells 1.5 endosymbiotic theory photosynthesis 2.9 respiration 2.8 4.2 aerobic anaerobic dna replication dna structure 4.1 2.6 2.4 ecosystems carbon cycle 2.2 4.4 2.5 enzymes 4.3 2.1 carbohydrates scnt 3.4 pedigree mendel theoretical genetics punnett inheritance biology gmo 3.5 meiosis 3.3 genetic modification cloning 3.2 biotechnology 7.2 statistics 3.1 genes 2.3 lipids cell structure 1.3 energy flow ecology organic molecules protein structure protein energy eukaryotic evolution prokaryotic cladistics taxonomy classification 5.3 darwin 5.1 cladogram 5.4 5.2 natural selection carbon greenhouse effect global warming food web membranes cell membranes membrane structure ultrastructure of cells genome ahl higher level hl gametes sex membrane cell membrane t-test stats data standard deviation introduction to cells food chain atp rna amino acids proteins water properties water catalysts catabolism molecular biology anabolism molecules organic cancer diffusion active transport osmosis