Which of the following statements are true? Triacylglycerol's (triglycerides) contain ester bonds Unsaturated fats are more likely than saturated fats to be liquid at room temperature. Saturated fats have lower melting points than do unsaturated fats. Fats that contain more unsaturated fatty acid residues than saturated fatty add residues are more likely to be liquid at room temperature. Triacylglycerol's (triglycerides) are carboxylic acids.