1. Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles Starter – Why are cells different? Assignment 4 Comparing Cell Components L/O How are cells in different tissues specialised? P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions

2. Comparing Cell Structures for function Microvilli cells are found in the gut and are adapted to absorb small molecules from the gut into the blood stream Neurons are adapted to sending electrical impulses along them and then signals from their synapse Examine the images of these two cells and describe, explain and compare their internal structure in terms of their function P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles L/O How are cells in different tissues specialised?

3. Comparing Cell Structures for function Microvilli cells are found in the gut and are adapted to absorb small molecules from the gut into the blood stream Neurons are adapted to sending electrical impulses along them and then signals from their synapse Examine the images of these two cells and describe, explain and compare their internal structure in terms of their function P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles L/O How are cells in different tissues specialised?

4. P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions

5. P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions

6. Comparing Cell Structures for function Define the term specialised cell Draw a diagram of each cell Write a paragraph describing the function of each cell. Write one paragraph describing what cell components (organelles) are present in each cell and explain why they are needed Find, print and label an electron micrograph of a neuron and a microvilli cell P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles L/O How are cells in different tissues specialised?

7. For M2, learners must briefly explain cell differentiation and its importance in the formation of tissue types. Learners should be able to identify different types of tissues from their observations of electron micrographs and explain how the presence of certain numbers of cell components influences the function of tissues. For example, consideration of the effect a large number of mitochondria in a tissue may have on its function. Different tissue types should be considered. P2 Record accurately observations of different types of tissues from a light microscope P4 Interpret electron micrographs of different types of tissues P5 Describe the key structures and functions of a eukaryotic and prokaryotic cell M2 Explain how the relative presence of different cell components influences the function of tissues D2 Compare different tissues with similar functions in terms of their structure and functions Keywords - cell membrane; cell wall; nucleus; nucleolus; cytoplasm; mitochondria; ribosome; endoplasmic reticulum (smooth and rough); Golgi body; lysosome; vesicles L/O How are cells in different tissues specialised?