the cell divides twice could be extended to a stop gametes during meiosis to form four frame animation if ICT is and fertilisation. gametes, each with available. Describe how an embryo is a single set of Watch BBC video clip and formed. chromosomes access information on mitosis Compare mitosis and all gametes are and meiosis (see resources). meiosis. genetically different from each other. Produce a poster to compare mitosis and meiosis. Gametes join at fertilisation to restore the normal number of chromosomes. The new cell divides by mitosis, and as the embryo develops cells differentiate. 4.1.3.6 At first the cells in an Define the term cell’. 1 Write a job description for a Observe prepared slides Observation activity ‘stem embryo can grow and newspaper for each type of of specialised cells materials: Describe the function of divide to form any type specialised cell (xylem, sperm under the microscope, microscopes stem cells in embryonic and of cell. They are stem cell, red blood cell etc), eg: or use bioviewers. slides adult animals. cell wanted must be cells. ‘Sperm – coverslips Observe root hair cells Explain the importance of a strong swimmer…’ This sprouting mung As an embryo develops, under a microscope in cell differentiation. could be done using ICT. beans most of the cells sprouting mung beans. differentiate and Watch video clips showing prepared slides Use of models. become specialised. specialised plant and animal bioviewers Specialised cells carry cells. slide strips. out a particular function.
the cell divides twice to form four gametes, each with a single set of chromosomes all gametes are genetically different from each other. Gametes join at fertilisation to restore the normal number of chromosomes. The new cell divides by mitosis, and as the embryo develops cells differentiate. gametes during meiosis and fertilisation. Describe how an embryo is formed. Compare mitosis and meiosis. could be extended to a stop frame animation if ICT is available. Watch BBC video clip and access information on mitosis and meiosis (see resources). Produce a poster to compare mitosis and meiosis. 4.1.3.6 At first the cells in an embryo can grow and divide to form any type of cell. They are stem cells. As an embryo develops, most of the cells differentiate and become specialised. Specialised cells carry out a particular function. Define the term ‘stem cell’. Describe the function of stem cells in embryonic and adult animals. Explain the importance of cell differentiation. 1 Write a job description for a newspaper for each type of specialised cell (xylem, sperm cell, red blood cell etc), eg: ‘Sperm cell wanted – must be a strong swimmer…’ This could be done using ICT. Watch video clips showing specialised plant and animal cells. Observe prepared slides of specialised cells under the microscope, or use bioviewers. Observe root hair cells under a microscope in sprouting mung beans. Use of models. Observation activity materials: microscopes slides coverslips sprouting mung beans prepared slides bioviewers slide strips.