Supply not affected by demand for meat Can be made in vast quantities Cheaper Production of herbicide Reduces amount of crop spraying Herbicide resistant weeds can resistant crops develop Cross pollination with wild plants Potential loss of biodiversity Complete this table to compare mitosis and meiosis Mitosis Meiosis Number of daughter cells 2 4 formed Are the daughter cells identical yes No to the parent cell? Do the daughter cells have diploid Haploid haploid or diploid nuclei? Used for… Growth and repair Making gametes Haploid gametes join to form a diploid zygote The production of a genetically identical individual. An example of asexual reproduction. Remove a diploid nucleus from a body cell; Enucleate an egg cell; Insert diploid nucleus into enucleated egg cell; Stimulate the diploid nucleus to divide by mitosis; Implant into surrogate mother. Discarded embryos from fertility treatment. Embryo destroyed in the process . Advantage Disadvantage Cloning Can make a genetically identical copy Cloned animals often die young. of an animal with desirable Cloned animals often age more characteristics. quickly. Can be used to make copies of GM Complicated process. animals to guarantee all offspring have the trait. Embryonic stem cell stem cells can develop Embryonic stem cells can come from into almost every type of human cell. leftover embryos from fertility Bone marrow stem cells can be used treatments. to treat leukaemia. Risk of rejection if not from a patients stem cells may be used in future own stem cells. instead of embryonic stem cells. Could lead to tumours forming. The sequence of bases on the DNA DNA double unzips; The complementary mRNA strand is made in the nucleus and passes out through a pore; mRNA attaches to the ribosome; A triplet of bases on the mRNA (codon) code for a specific amino acid; tRNA transfers amino acids to the ribosome. A change in the sequence of bases in the DNA Acids They have a specific shape, they have a specific sequence of Amino Acids A biological catalyst It speeds up its activity up to 40oC after which it denatures and stops working. Enzymes only work at a specific pH. Either side of the optimum, it will not work as well.
Supply not affected by demand for meat Can be made in vast quantities Cheaper Production of herbicide resistant crops Reduces amount of crop spraying Herbicide resistant weeds can develop Cross pollination with wild plants Potential loss of biodiversity Complete this table to compare mitosis and meiosis Mitosis Meiosis Number of daughter cells formed 2 4 Are the daughter cells identical to the parent cell? yes No Do the daughter cells have haploid or diploid nuclei? diploid Haploid Used for… Growth and repair Making gametes Haploid gametes join to form a diploid zygote The production of a genetically identical individual. An example of asexual reproduction. Remove a diploid nucleus from a body cell; Enucleate an egg cell; Insert diploid nucleus into enucleated egg cell; Stimulate the diploid nucleus to divide by mitosis; Implant into surrogate mother. Discarded embryos from fertility treatment. Embryo destroyed in the process . Advantage Disadvantage Cloning Can make a genetically identical copy of an animal with desirable characteristics. Can be used to make copies of GM animals to guarantee all offspring have the trait. Cloned animals often die young. Cloned animals often age more quickly. Complicated process. Embryonic stem cell stem cells can develop into almost every type of human cell. Bone marrow stem cells can be used to treat leukaemia. stem cells may be used in future instead of embryonic stem cells. Embryonic stem cells can come from leftover embryos from fertility treatments. Risk of rejection if not from a patients own stem cells. Could lead to tumours forming. The sequence of bases on the DNA DNA double unzips; The complementary mRNA strand is made in the nucleus and passes out through a pore; mRNA attaches to the ribosome; A triplet of bases on the mRNA (codon) code for a specific amino acid; tRNA transfers amino acids to the ribosome. A change in the sequence of bases in the DNA Acids They have a specific shape, they have a specific sequence of Amino Acids A biological catalyst It speeds up its activity up to 40oC after which it denatures and stops working. Enzymes only work at a specific pH. Either side of the optimum, it will not work as well.
b2_knowledge_test_answers.docx