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Kids Discover : Cells

Kids Discover : Cells. Page 2 and 3. 5 ways cells are similar to you Gathers fuel Creates energy Grows Reproduces dies. Four common atoms Carbon Nitrogen Hydrogen oxygen. unicellular – made up of one cell example – amoeba multicellular – made up of many cells example - human.

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Kids Discover : Cells

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  1. Kids Discover : Cells

  2. Page 2 and 3 5 ways cells aresimilar to you • Gathers fuel • Creates energy • Grows • Reproduces • dies Four common atoms • Carbon • Nitrogen • Hydrogen • oxygen

  3. unicellular – made up of one cellexample – amoebamulticellular – made up of many cellsexample - human

  4. Specialized cells that humans have: • Blood • Nerve • Muscle • Fat • Bone • skin

  5. Page 4 and 5 5 ingredients of a cell • Water • Protein • Carbohydrates • Nucleic acid • fats Parts of a Human Cell 1) DNA 2) Ribosome 3) Golgi body 4) Lysosome 5) Mitochondria 6) Cytoplasm 7) Cell membrane 8) Endoplasmic reticulum (ER) 9) Vacuole 10) nucleus

  6. Pages 6 and 7 Your DNA is as individual as your finger print. Cells with no nucleus are called prokaryotes and cells with a nucleus are called eukaryotes. The letters C, G, A, and T represent the bases on the genetic code.

  7. Pages 8 and 9 A cell splits itself into two during the process called mitosis. Each human cell has 23 pairs of chromosomes. Skin cells are the body’s first defense against bacteria and viruses.

  8. The Story of Cells 1673 – Leeuwenhoek became the first person to see living cells 1831 – Robert Brown shows the nucleus is a key part of each cell 1839 – Schwann and Schleiden made the cell theory 1860’s – Gregor Mendel uses pea plants to show how genes control heredity 1860’s – Walther Flemming dyes cells and finds out how they reproduce 1931 – invention of the electron microscope – now we can see atoms 1953 – Watson and Crick show the structure of DNA is a double helix 1977 – the first clone is created – a sheep named Dolly 2000 – Human Genome Project – doctor can diagnose, prevent and treat diseases

  9. Page 14 and 15 In the late 1800’s, scientists discovered the secrets of heredity – the passing of genes from generation to generation. About 99.8 percent of your genetic information is the same as your six billion or so fellow humans on Earth. Over millions of years, changes in genes, called mutations, have combined to create different plants and animals.

  10. Page 16 and 17 Genetic engineering is making changes in an organisms genetic material – examples include designing your own baby or injecting cells to get bigger GM stands for genetically modified and one positive is it will improve resistance to disease and pests in crops Stem cells can change into other types of cells when they reproduce.

  11. Page 16 and 17 Life Span of a Cell Skin cells live 1 – 34 days Stomach lining cells live 2 days Red blood cells live 120 days Bone cells live 25-30 years Some nerve cells live until we die

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