Question

1. what are the four uses for lipids given on the slide?
2. lipids do not combine with water because they are non - polar. what does that mean?
3. what are the two monomers of a lipid macromolecule?
4. what are the only two elements in the fatty acid chains?
5. you will now construct one fatty acid chain at the station.

Explanation:

1. Lipids include fats, oils, waxes, and steroids. Fats and oils are types of lipids used for energy - storage and as components of cell membranes.
2. Lipids are non - polar because they are composed mainly of carbon and hydrogen atoms which form non - polar covalent bonds. Non - polar substances do not combine with water (hydrophobic) as water is polar.
3. The monomers of a lipid macromolecule are glycerol and fatty acids. Glycerol is a three - carbon alcohol and fatty acids are long hydrocarbon chains.
4. Fatty acid chains in lipids mainly consist of carbon, hydrogen, and oxygen. The carbon and hydrogen atoms dominate the hydrocarbon chain, giving it non - polar properties.
5. To construct one fatty acid chain at the station, you would combine glycerol with fatty acids through dehydration synthesis reactions.

Answer:

1. Fats, oils, waxes, steroids are uses for lipids.
2. Lipids are non - polar because they have non - polar covalent bonds and are hydrophobic.
3. The monomers of a lipid macromolecule are glycerol and fatty acids.
4. The elements in the fatty acid chains are carbon, hydrogen, and oxygen.
5. Combine glycerol with fatty acids to construct one fatty acid chain.