biology 0.0 / 5 ? BiologyKeywordsIGCSEEdexcel Created by: Mitchell, KimberleyCreated on: 13-04-15 18:55 Active Transport The movement of substances from a high to low concentration gradient and/or across a cell membrane using energy 1 of 17 ADH (Anti-diruetic Hormone) The hormone that controls the selective reabsorbtion of water in the kidney 2 of 17 Diploid Having two sets of chromosomes in the nucleus of the cells; one from the male parent and one from the female parent. 3 of 17 Dominant A characteristic that will show up in the offspring even if only one allele is inherited. 4 of 17 Genotype Alleles of particular gene (TT, Tt, tt) 5 of 17 Habitat The place where an animal or plant lives including the living and non-living aspects of the area. 6 of 17 Haploid Having only one set of chromosomes in the nucleus of the cell. 7 of 17 Homozygous when the two alleles for particular gene on a pair of chromosomes are the same. (TT, tt) 8 of 17 Hetrozygous When two alleles for a particular genes are different (Tt) 9 of 17 Meiosis Two stage cell division which reduces the number of chromosomes-important in the formation of gamets 10 of 17 Mitosis Asexual cell division, single staged process results in identical daughter cells. 11 of 17 Natural selection The process of evolution. Only the organisms adapted to their environment will survive and will proceed to breed the fittest organisms. 12 of 17 Osmoregulation The control of mineral ions and water in the cytoplasm of a cell or the blood of n organism. 13 of 17 Phenotype the physical characteristic of an organism with respect to one or more genes. 14 of 17 Plasmids The extra circles of DNA containing extra genes used in genetic engineering. 15 of 17 Population A group of individuals as the same species live in a habitat and breed together. 16 of 17 Zygote The new diploid individual formed when the haploid male and female gametes meet and fuse in sexual reproduction. 17 of 17
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