Cell cycle length (5 min) Tell the class that, on average, human cells take 24 hours to divide. Ask them to calculate how long it takes for one cell to form a group of 64 cells. Lesson B2.2 Growth and division AQA spec link: 1.1.4 Students should be able to explain the Aiming for Grade 4 LOs: importance of cell differentiation. Define the terms growth and Human differentiation. contain As an organism develops, cells differentiate to State why plant clones are genetically design form different types of cells. identical to each other. they Most types of animal cell differentiate at an • Attempt to clone a plant by using from an early stage. apparatus correctly. in size) Many types of plant cells retain the ability to • just differentiate throughout life. mean a Aiming for Grade 6 LOs: In mature animals, cell division is mainly restricted to repair and replacement. As a cell Describe the importance of cell tall tree differentiates it acquires different sub-cellular differentiation in multicellular a plant structures to enable it to carry out a certain organisms. sure function. It has become a specialised cell. Explain how using tissue culture creates a clone of a plant. 1.2.3 Stem cells from meristems in plants can be Attempt to clone a plant by using used to produce clones of plants quickly and apparatus correctly and following economically: safety rules.
Cell cycle length (5 min) Tell the class that, on average, human cells take 24 hours to divide. Ask them to calculate how long it takes for one cell to form a group of 64 cells. Lesson B2.2 Growth and division AQA spec link: 1.1.4 Students should be able to explain the importance of cell differentiation. As an organism develops, cells differentiate to form different types of cells. • Most types of animal cell differentiate at an early stage. • Many types of plant cells retain the ability to differentiate throughout life. In mature animals, cell division is mainly restricted to repair and replacement. As a cell differentiates it acquires different sub-cellular structures to enable it to carry out a certain function. It has become a specialised cell. 1.2.3 Stem cells from meristems in plants can be used to produce clones of plants quickly and economically: Aiming for Grade 4 LOs: Define the terms growth and differentiation. State why plant clones are genetically identical to each other. Attempt to clone a plant by using apparatus correctly. Human design they from an in size) just mean a tall tree a plant sure contain Aiming for Grade 6 LOs: Describe the importance of cell differentiation in multicellular organisms. Explain how using tissue culture creates a clone of a plant. Attempt to clone a plant by using apparatus correctly and following safety rules.
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