The classic experiment using isolated cells from two species of sponges provided evidence that:
cell adhesion molecules are species specific.
cell adhesion molecules are non-specific.
sponge cells have cell adhesion molecules.
sponge cells posses an extracellular matrix.

ucd e e. rr. t t t t t t. to

where is the scientific experiment?

the answer is b. glad to .

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: