4 B4.3.3 explain the role of Page 5 of the BBC Bitesize site, , covers mitosis and could be used to support part of an introduction. There is also an activity and a test which include content from chapter B1 about inheritance and DNA so has a synoptic function. meiotic cell division in halving the chromosome number to video clip is a good visual representation and summary of meiosis and, again, could be used as an introduction. It form gametes, including the emphasises the main points e.g. the shuffling of genetic material resulting in genetically unique cells but does stages of interphase and two mention homologous pairs which needs to be glossed over as this is unnecessary terminology at this level. meiotic divisions The activity described focuses on both mitosis and meiosis and could be used as consolidation once the main ideas about meiosis have been explored. The presentation found summarises the main points about meiosis at about the right level and does not include detail about the individual phases which learners do not need to know. There are various resources available that compare the processes of mitosis and meiosis and these can be used as consolidation and to ensure that learners have grasped the main points of each. Often the difficulties in their learning of this topic show up when trying to compare the two or identify one or the other from a list of features. Possible activities can be found and but there are many more. 5 B4.3.4 describe the function of Actions of embryonic stem cells stem cells in embryonic and The embryonic stem animation provides learners with a clear yet high level description of how ‘Human cells’ adult animals and meristems embryonic stem cells may be used in the lab to produce a particular specialised cell type. in plants B4.3.5 explain the importance THINKING CONCEPTUALLY of cell differentiation, in which Stem cells or meristem? cells become specialised by Stem cells and their uses are clearly described by the BBC resource whilst the YouTube clip on the function of switching genes off and on to meristems video provides an overview of meristematic tissue. form tissues with particular functions THINKING CONTEXTUALLY Cell differentiation Cell differentiation is summarised in this concise description before links are made to stem cells and stem cell treatments. THINKING CONTEXTUALLY
4 B4.3.3 explain the role of meiotic cell division in halving the chromosome number to form gametes, including the stages of interphase and two meiotic divisions Page 5 of the BBC Bitesize site, , covers mitosis and could be used to support part of an introduction. There is also an activity and a test which include content from chapter B1 about inheritance and DNA so has a synoptic function. video clip is a good visual representation and summary of meiosis and, again, could be used as an introduction. It emphasises the main points e.g. the shuffling of genetic material resulting in genetically unique cells but does mention homologous pairs which needs to be glossed over as this is unnecessary terminology at this level. The activity described focuses on both mitosis and meiosis and could be used as consolidation once the main ideas about meiosis have been explored. The presentation found summarises the main points about meiosis at about the right level and does not include detail about the individual phases which learners do not need to know. There are various resources available that compare the processes of mitosis and meiosis and these can be used as consolidation and to ensure that learners have grasped the main points of each. Often the difficulties in their learning of this topic show up when trying to compare the two or identify one or the other from a list of features. Possible activities can be found and but there are many more. 5 B4.3.4 describe the function of stem cells in embryonic and adult animals and meristems in plants B4.3.5 explain the importance of cell differentiation, in which cells become specialised by switching genes off and on to form tissues with particular functions Actions of embryonic stem cells The ‘Human embryonic stem cells’ animation provides learners with a clear yet high level description of how embryonic stem cells may be used in the lab to produce a particular specialised cell type. THINKING CONCEPTUALLY Stem cells or meristem? Stem cells and their uses are clearly described by the BBC resource whilst the YouTube clip on the function of meristems video provides an overview of meristematic tissue. THINKING CONTEXTUALLY Cell differentiation Cell differentiation is summarised in this concise description before links are made to stem cells and stem cell treatments. THINKING CONTEXTUALLY
311664-chapter-b4-suggested-teaching-hours-and-outline-scheme-of-work.docx