The bacterium neisseria gonorrhoeae, which is responsible for the disease gonorrhea, has a diameter of 0.5 μm. assuming a spherical shape in both cases, calculate the surface area to volume ratio of the bacterium, as well as that of a large, eukaryotic globular amoeba with a diameter of 150 μm. compare the sa: v of the bacterium to that of the amoeba.

SA:V of the bacterium to that of the amoeba

Explanation:

Surface area (SA) of a sphere

Volume (V) of a sphere

Surface area to volume ratio is equal to

a) For bacteria of diameter μm mm

This means there is unit surface area per unit volume.

b) For amoeba with a diameter of μmmm

The ratio for SA:V of the bacterium to that of the amoeba

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.

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