Question

Choanoflagellates are single-celled eukaryotes that feed on bacteria. In the presence of their food bacteria, some choanoflagellates develop multicellular structures in which the individual choanoflagellate cells are attached to one another. Based on this observation, it may be assumed that:a) choanoflagellates are complex multicellular organisms, because they alternate between single-celled and multicellular states.
b) the choanoflagellate cells use cadherins to attach to each other.
c) the choanoflagellates use integrins to attach to each other.
d) in the presence of food bacteria, each choanflagellate gets more food when feeding in a cluster than they would when feeding individually.

Answer 1

Answer:

the bacterial cells, or a chemical released by the bacteria, bind to a receptor on the plasma membrane of the choanoflagellate cells.