Triglycerides are the primary energy storage molecules in the body, providing more than twice the energy per gram compared to carbohydrates or proteins
What is the role of steroid hormones in the body?
Chemical messengers
What are the three main classes of lipids?
Triglycerides, phospholipids, steroids
Triglycerides are the primary energy storage lipids, while phospholipids are the structural components of cell membranes
Triglycerides are joined by ester bonds.
True
What structure do phospholipids form in cell membranes?
Phospholipid bilayers
Phospholipids are amphipathic, meaning they have both polar and nonpolar regions.
True
Lipids are hydrophobic organic compounds that are insoluble in water but soluble in organic solvents
Triglycerides are the primary energy storage molecules, phospholipids are essential for cell membrane structure
Arrange the steps in the formation of a phospholipid bilayer in cell membranes:
1️⃣ Hydrophobic tails face inward
2️⃣ Polar heads face outward
3️⃣ Hydrophobic barrier is created
4️⃣ Substance passage is regulated
Steroids are hydrophobic and insoluble in water due to their nonpolar nature.
True
Triglycerides provide more than twice the energy per gram compared to carbohydrates or proteins
Phospholipids are the primary structural components of cell membranes.
True
Phospholipids are amphipathic, meaning they have both polar and nonpolar regions.
True
Lipids are insoluble in water but soluble in organic solvents
Match the lipid class with its composition and function:
Triglycerides ↔️ Glycerol + 3 fatty acids, energy storage