biology 0.0 / 5 ? BiologybiologyGCSEEdexcel Created by: oliviahill123Created on: 07-03-15 12:36 7 things a plant cell contains cell membrane, cytoplasm, nucleus, mitochondria, cell wall, large vacuole, chloroplasts 1 of 19 4 things an animal cell contains cell membrane, cytoplasm, nucleus, mitochondria 2 of 19 what does the cytoplasm do where chemical reactions take place 3 of 19 what happens in mitochondria respiration 4 of 19 4 things in a bacterial cell chromosomal DNA, plasmid DNA, flagella, cell wall 5 of 19 what is a gene a section of a molecule of DNA which codes for a specific protein 6 of 19 what is a DNA molecule 2 strands coiled to form a double helix, linked by bases (A+T, C+G) held together by weak H bonds 7 of 19 5 advantages of human genome project personalised medicines, evolution of genome, treatments/cures, causation genes, testing for genetic disorders 8 of 19 3 positives of genetic engineering Vitamin A in golden rice, human insulin, herbicide resistant crop plants 9 of 19 3 negatives of genetic engineering golden rice may crossbreed (contaminating DNA), GM insulin doesn't suit all, herbicide resistant weeds/ loss of biodiversity 10 of 19 what is mitosis production of 4 identical diploid daughter cells with identical sets of chromosomes as parents 11 of 19 3 things mitosis occurs in growth, asexual reproduction, repair 12 of 19 what is meiosis production of 4 genetically different haploid gametes with half the number of chromosomes 13 of 19 what happens at fertilisation two haploid gametes combine to form a diploid zygote 14 of 19 what is cloning an example of asexual reproduction (mitosis) 15 of 19 5 steps to cloning a mammal remove diploid nucleus from body cell, enucleate egg cell, insert nucleus into egg, stimulate, implant into surrogate mammal 16 of 19 2 advantages of cloning GE copies of organism with desired characteristic, cows with human insulin in milk 17 of 19 3 disadvantages of cloning few embryos develop successfully (ethical), grow old quickly and die young, can't create mammal from one limb 18 of 19 what can stem cells in the embryo do differentiate (loses this ability as matures) 19 of 19
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