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Understanding Lipids: Types and Functions in Your Body

Explore the role of lipids, energy-rich organic compounds, in cell storage, membrane composition, and long-term energy reserves. Learn about carbohydrates, proteins, and nucleic acids as essential elements of life.

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Understanding Lipids: Types and Functions in Your Body

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  1. Week 16, Day Two • HW # 51- Revise your Essay. • Warm up • What do lipids do for your body? What are the types of lipids?

  2. Warm up Response -Lipids are energy rich organic compounds made of carbon, hydrogen and oxygen -They contain more energy than carbohydrates -Cells store lipids for later use. -Lipids also make up most of the cell membrane.

  3. Homework Response/Check D

  4. Goals for Today • Quick discussion on Carbs, Lipids, Proteins, etc. • Work on Essay Revision (Introduction) • Complete Chemical Compounds in Cells (and review) • Begin Study Guide

  5. Element • Substance that cannot be broken down into simpler substances. Example: carbon.

  6. The most common elements in living things are: • Carbon • Oxygen • Hydrogen • Nitrogen

  7. Atom • The smallest unit of an element

  8. Compound • A compound is two or more elements that are chemically combined. The smallest unit of a compound is a molecule. An example of a compound is water.

  9. Compounds

  10. Organic and Inorganic Compounds • Inorganic compounds do not contain carbon. • Examples: water (H2O) & table salt (NaCl). • Organic compounds contain carbon and hydrogen and are associated with living things. • Examples: (next slide)

  11. Four most important groups of organic compounds found in living things are: • Carbohydrates • Lipids • Proteins • Nucleic Acids

  12. Carbohydrates • Energy-rich compound made of carbon, hydrogen, and oxygen • Supply energy for cell processes; short-term energy source • Most important source of energy for body • Sugars-fruits, starch-pasta, and cellulose-found in cell walls of plants

  13. Proteins • Made of elements carbon, oxygen, hydrogen, nitrogen, and sulfur • Regulate cell processes and build cell structure • s • Made up of smaller molecules linked together chemically called amino acids • Enzymes speed up chemical reactions

  14. Lipids • Energy-rich compounds made of carbon, hydrogen, and oxygen • Store large amounts of energy long term; form boundaries around cells • Fats, oils, waxes, and cholesterol

  15. Nucleic Acids • Made of the elements carbon, oxygen, hydrogen, nitrogen, and phosphorus 2 kinds of nucleic acids • DNA - Carries hereditary information (chromatin in nucleus) • RNA - used to make proteins (cytoplasm & nucleus)

  16. Water and Living Things • Makes up about 2/3 of your body • Most chemical reactions in cells require water • Helps cells keep their size and shape • Helps keep temperature of cells from changing rapidly

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