Refer to the Figure Below

Multiple Choice

Refer to the figure below. Biologists sometimes use plastic containers called microtiter plates to analyze biological interactions.The microtiter plate contains 96 wells of equal size, each of which holds 0.1-0.3 mL of liquid.When using the plate, a biologist covalently attaches (immobilizes) a different molecule to each well and then add cells suspended in a liquid.After an incubation period, cells that do not bind are washed away, and the whole plate is treated with a cell stain.The amount of stain observed in each well gives an indication of the number of cells binding to the immobilized molecule.Which molecules might the biologist attach to the wells prior to running an experiment to determine the specificity of recognition of a particular cell type for another cell type?

A) Simple sugars
B) Lipids
C) Amino acids
D) Oligosaccharides
E) Oligonucleotides