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What do all these have in common?

What do all these have in common?. The very smallest living organisms are single cells which carry out all The functions of living things. As organisms get bigger and are made u p of many cells, some of these cells become specialized to carry out special jobs. . What is the picture?

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What do all these have in common?

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  1. What do all these have in common? The very smallest living organisms are single cells which carry out all The functions of living things. As organisms get bigger and are made up of many cells, some of these cells become specialized to carry out special jobs.

  2. What is the picture? What do you think these special cells do for plants or animals? 2 1 3 5 6 4 9 8 7 Open a word document to take notes.

  3. Specialised Cells Learning Objectives: Learning Activities: • All must be able to describe with examples, how cells are specialised to perform different functions. • Most should be able to state how cells group together to form tissues. • Some could state how specific cells are adapted to their function. • What is the picture? • Read what is a specialised cell • Powerpoint showing different specialised cells • Note Making with Word • Quiz on plant and animal cells

  4. What is a specializedCell? • Plants and animals consist of many cells and so are known asmulticellular • They contain many different types of cells. • Each type of cell is designed to carry out a particular job or function. • This is known as cellspecialization • Not all cells look the same. • Some cells have a special shape and features to help them do a certain job. • Muscle cells have different structure to blood and nerve cells in animals. In plants the cells where photosynthesis happens are very different to root hair cells.

  5. Note Making Activity The following slides show some examples of specialized cells Read through the information Insert a table into your word document with 3 columns. Title the first column Type of cell, the second column Diagram, and the third column features/ job. • Fill the columns with information from the slides. You may have to read go back and read the slides more than once to complete the table. • Save the document in your z-drive before the end of class so you have it tomorrow.

  6. Sperm cell Head contains enzymes & nucleus Designed to Fertilise eggs. Found in the Testes Tail A sperm is small and has a long tail that provides movement so it can swim and find an egg cell. • The head contains enzymes whichallow it to digest into an egg cell and join with it.

  7. Egg (Ovum) Cell • Designed to be Fertilised. • Found in the Ovaries. • An egg cell is large and bulky. • Contains yolk which provides a large food store for the new cell being formed. Cytoplasm containing yolk Layer of jelly Nucleus

  8. Palisade Cell • Designed for Photosynthesis • Found in the top of a leaf • Tall and has a large surface area to absorb water and minerals. • Packed with chloroplasts to help make plant food. Nucleus Chloroplasts

  9. Ciliated Cell • Designed to stop Lung Damage • They line all the air passages in the lungs. • They have tiny hairs called cilia. • Hairs sweep mucuswith trapped dust and bacteria back up the throat. Nucleus cilia

  10. Root Hair Cell • Thin cell wall makes it easy for minerals to pass through. • Designed forabsorbing. Vacuole thin cell wall • Has a large surface which helps it to absorb water and minerals. Cell membrane • Found in a plant root.

  11. Muscle cell Found in animals nucleus Long making it able to change Shape. This is called contraction.

  12. Nerve Cell (neurone) Nucleus • They are long • They have connections at each end • Can carry electrical signals • Their job is to carry nerve impulses to different parts of the body.

  13. Red Blood Cell • Designed to carry oxygen • Found in blood. • Large surface area, for oxygen to pass through. • Contains haemoglobin, which joins with oxygen. • Has no nucleus

  14. Xylem cell Found in a plant (the stem) Join together to form xylem tubes that carry water from roots to leaves of plants

  15. Copy and fill in the gaps: Some cells have special jobs to do. They often have special shapes to help them do their job. We say that these cells are _________________ to do their jobs. A group of the same type of cells, all working together, is called a _________________ . A group of muscle cells all grouped together is called _________________ . Muscle cells help us to _________________ . adapted move muscle tissue

  16. Task: Finish your table, save and print. Don’t forget to put you name on your paper then turn in to teacher. Complete the homework B2c/3 and B2c/4(you can answer directly on the sheets)

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