All of the following are polysaccharides except Multiple Choice
prostaglandins in inflammation.
a cell's glycocalyx.
cellulose in certain cell walls.
agar used to make solid culture media.
glycogen in liver and muscle

prostaglandins in inflammation.

Explanation:

Prostaglandins are not polysaccharides, but lipid molecules derived from arachidonic acid and other polyunsaturated fatty acids.

Prostaglandins function as hormones helping in the contraction and expansion of smooth muscles, also they play a role in inflammation of tissues

Haploid" refers to any cell that has 23 chromosomes (half of the total 46). "Gametes" are specifically sex cells that have 23 chromosomes. "Diploid" refers to any cell that has all 46 chromosomes. "Zygote" is the result of two gamete (haploid) cells fusing, and becoming a diploid cell.