Which describes the molecule below? A. An amino acid with three side chains B. A lipid with two unsaturated fatty acids and one saturated fatty acid. C. A lipid with two saturated fatty acids and one unsaturated fatty acid. D. A nucleotide with three bases

Option B

Explanation:

This structure is a triglyceride having two unsaturated ( oleic acid , alpha-linolic acid) and one saturated fatty acid (palmitic acid). Remember, Triglyceride is a lipid.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.