Carbohydrates, Lipids, Proteins, and Nucleic Acids

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  • Another day another dollar..
  • First hour Bio, great
  • Today, we're going to be learning about macromolecules.
  • Macro.. what?
  • As in carbohydrates, lipids, proteins, and nucleic acids.
  • Yeah, they're essential for all living organisms.
  • Yes, exactly students. They're made up of multiple subunits called monomers and together they makeup polymers or in other words macromolecules.
  • What does each macromolecule do?
  • And what kinds of foods can you find them in?
  • All good questions, class. But let's talk about what each macromolecule is made up of first.
  • Well, I know that lipids and carbohydrates are made up of carbon, hydrogen, and oxygen. Then, proteins are made up of carbon, hydrogen, oxygen, and nitrogen. Lastly, nucleic acids are made up of all 4 of those elements plus phosphorus.
  • Good, Gabrielle. To start off answering your question Gabby, proteins build cells and help control metabolic reactions. Lipids keep in heat and help store energy.
  • Carbs give your body energy, and nucleic acids carry your genetic information.
  • Wow, you guys really do know your stuff. Who knew you didn't even like Biology?
  • And to answer your question Cody, carbs can be found in bread, pasta, and fruit. Proteins can be found in meats and cheeses. Lipids can be found in oil, butter, and eggs. And, nucleic acids can be found in fish, beans, and yeast. The monomer for proteins are amino acids, the monomers for lipids are triglycerides. The monomer for nucleuic acids are nucleotides and the monomers for carbohydrates are monosaccharides.
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