Which statement most accurately describes the relationship between the permeability and fluidity properties of phospholipid bilayers and their structure? a. bilayers are most permeable and most fluid when they consist of longer, unsaturated hydrocarbon tails. b. bilayers are most permeable and most fluid when they consist of longer, saturated hydrocarbon tails. c. bilayers are most permeable and most fluid when they consist of shorter, unsaturated hydrocarbon tails. d. bilayers are most permeable but least fluid when they consist of shorter, unsaturated hydrocarbon tails.

A. Bilayers are more permeable as well as more fluid when they consist of shorter, unsaturated hydrocarbon tails.  

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.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

explanation:

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