Aim: How are living things similar, chemically? DO NOW: 1.What kind of chemical molecules can we...
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Transcript of Aim: How are living things similar, chemically? DO NOW: 1.What kind of chemical molecules can we...
Aim: How are living things similar, chemically?
DO NOW:1. What kind of chemical molecules can we find
in our bodies?2. What does your diet consist of?
Chemical Composition
• All living things are made up of 4 main elements: carbon (C)
hydrogen (H) oxygen (O) nitrogen (N)
• Other elements are also present in small amounts
Organic Molecules
• Contain both carbon and hydrogen• Proteins, lipids (fats, oils & waxes),
carbohydrates, nucleic acids• Ex. Glucose (simple sugar) C6H12O6
Lipids
Nucleic Acids
Inorganic Molecules
• Do not have carbon & hydrogen together but can have any element combined with other elements
• Salts, minerals, water (H2O)
• Oxygen (O2) , carbon dioxide (CO2)
Water
Other Similarities
• Made of cells: basic units of structure & function
• Carry on life processes
Levels of Organization in Living Things
• Cells Tissues Organs Organ Systems Organism
BrainPop Video
• https://www.brainpop.com/science/matterandchemistry/bodychemistry/
Review Questions
• 1. What group of organic compounds does DNA belong to?
• 2. Which organic compounds make up the most mass in a typical body cell?
• 3. Describe two types of chemical reactions that take place in your bodies, all the time.
• 4. Why is water, an inorganic compound, so important to your cells?
Homework
• Complete vocabulary handout based on video• You can use your textbook for help or the
internet