Lipids, Fats and Oils
About the Lecture
The lecture Lipids, Fats and Oils by Georgina Cornwall, PhD is from the course The Macromolecules of Life.
Included Quiz Questions
Which of the following is NOT correct about lipids?
- Lipids are saturated fats that have long hydrocarbon tails and multiple carbon-carbon double bonds.
- Lipids are nonpolymer macromolecules that are predominantly composed of hydrocarbon chains.
- Fats, oils, waxes, terpenes, steroids, and phospholipids are examples of lipids.
- A fatty acid in the cis configuration has two –R groups on the same side of the carbon-carbon double bond.
- Lipids are structural components that also help in energy storage and cell signaling.
Why are vegetable oils liquid at room temperature?
- The kinkiness in unsaturated hydrocarbon chains does not allow them to stack on top of each other, keeping vegetable oils in a liquid state at room temperature.
- Vegetable oils cannot solidify due to high molecular vibrations in the fully saturated hydrocarbon chains.
- Vegetable oils are liquid at room temperature due to the absence of a metal catalyst.
- Vegetable oils cannot solidify due to low molecular vibrations in the fully saturated hydrocarbon chains.
- Vegetable oils cannot solidify due to the larger number of hydrogen atoms in the fully saturated hydrocarbon chains.
Why are trans fats harmful to health?
- Trans fats increase low-density lipoprotein (LDL) cholesterol levels and lower high-density lipoprotein (HDL) cholesterol levels, increasing the risk of coronary artery disease and metabolism-related disorders.
- Trans fats lower LDL cholesterol levels and increase HDL cholesterol levels, increasing the possibility of brain hemorrhages.
- Trans fats lower LDL and HDL cholesterol levels in the blood, increasing the possibility of liver degeneration.
- Trans fats raise LDL and HDL cholesterol levels in the blood, increasing the risk of liver degeneration.
- Trans fats raise LDL and HDL cholesterol levels in the blood, increasing the risk of intestinal bleeding.
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Author of lecture Lipids, Fats and Oils
Georgina Cornwall, PhD
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Good lecture
By Maria Elizabeth A. on 04. April 2019 for Lipids, Fats and Oils
I loved the correlation with margarine and butter, it helps to understand and remember the topic.
