Most cells that have become transformed into cancer cells have which of the following characteristics when compared to normal, healthy cells? a. Loss of density inhibition
b. More carefully regulated rates of cell division
c. Lower rates of mitosis
d. More sensitive to growth factors
e. Identical DNA
For each incorrect response above, use your knowledge to explain why it is not true of cancer cells:
a.

b.

c.

d.

e.

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

b a mature ovary of a plant.