Understanding Lipids

What characteristic of lipids makes them hydrophobic?

• They dissolve in water.

• They repel water.

• They are afraid of water.

• They absorb water.

Which of the following is a characteristic of saturated fats?

• They have multiple double bonds.

• They are liquid at room temperature.

• They have no carbon-to-carbon double bonds.

• They are healthier than unsaturated fats.

What is the process called when glycerol and fatty acids combine to form lipids?

• Hydrolysis

• Oxidation

• Reduction

• Dehydration synthesis

What is a triglyceride composed of?

• Three glycerols and one fatty acid

• Two fatty acids and one glycerol

• One fatty acid and two glycerols

• Three fatty acids and one glycerol

What is the main structural component of cell membranes?

• Triglycerides

• Steroids

• Proteins

• Phospholipids

What is the role of the hydrophilic phosphate end in phospholipids?

• It forms a single layer.

• It repels water.

• It attracts water.

• It stores energy.

Which type of fatty acid is essential and not synthesized by humans?

• Monounsaturated fatty acids

• Omega-3 fatty acids

• Saturated fatty acids

• Trans fatty acids

What is the basic structure of steroids?

• Four fused rings

• Five fused rings

• Three fused rings

• Six fused rings

What are anabolic steroids synthetic variants of?

• Cortisol

• Testosterone

• Cholesterol

• Estrogen

What is a potential negative effect of prolonged anabolic steroid use?

• Shrinking of the testicles

• Muscle loss

• Improved mood

• Increased fertility