Exploring the Role of Lipids in Biological Molecules

Which of the following is NOT a type of lipid?

• Waxes

• Proteins

• Fats

• Oils

What are lipids primarily made of?

• Carbon and Nitrogen

• Hydrogen and Carbon

• Oxygen and Nitrogen

• Hydrogen and Oxygen

What is the primary function of triglycerides in the body?

• Hormone production

• Cell membrane formation

• Energy storage

• Water repellency

Which molecule is formed by three fatty acids and glycerol?

• Wax

• Steroid

• Triglyceride

• Phospholipid

What is the main role of phospholipids in cells?

• Water repellency

• Forming the cell membrane

• Hormone production

• Energy storage

What part of the phospholipid is attracted to water?

• Cyclic rings

• Polar heads

• Nonpolar tails

• Fatty acid chains

Which of the following is NOT a characteristic of steroids?

• Hydrophobic

• Water-soluble

• Four cyclic rings

• Derived from cholesterol

Which hormone is NOT derived from cholesterol?

• Insulin

• Progesterone

• Testosterone

• Cortisol

Where can waxes be commonly found in nature?

• In the cell membrane

• In the bloodstream

• In the feathers of birds

• In muscle tissues

What property of waxes makes water bead up and run off certain plants?

• Hydrophilic

• Hydrophobic

• Soluble in water

• Contains fatty acids