14. You are given a greasy-feeling substance. When you mix it with water, it forms micelles. It is most likely a A. wax B. phospholipid C. fatty acid D. triglyceride E. detergent at roo 15. fatty acids, like those often found in olive oil, are generally temperature? A. Saturated ; liquid B. Unsaturated ; liquid C. Saturated; solid D. Unsaturated; solid E. Saturated; gas 16. Triacyglycerol and phospholipids share which structural component(s). A. Fatty acid tails and glycerol B. Glycerol and phosphate groups C. Ethanolamine groups and fatty acid tails D. Phosphate groups and fatty acid tails E. DNA and glycerol 17. The three parts of a nucleotide are A. Phosphate group, glucose sugar, amino acid B. Base, phosphate group, pentose sugar C. Glucose sugar, phosphate group, amino acid D. Carboxyl group, amino group, R group E. Pentose sugar, R group, pentose sugar * 18. In the diagram of a base pair shown to the right, which has two H-bonds holding the pair together, which DNA base is shown marked with an asterisk (*)? A. Adenine (A) B. Thymine (T) C Uracil (U) D. Cytosine C E Guanine (G) 9. Which of the following protein structures are held together exclusively by covalent bond A. Primary B. Secondary C Tertiary D. Quaternary E They all are​