In the Section "Investigating Life: the Nerve of Those Clams!",which

In the section "Investigating Life: The Nerve of Those Clams!",how would exposure to saxitoxin from algae cause genetic changes in clams? A)Saxitoxin would cause mutations to occur in the clam's DNA. B)Saxitoxin would increase the mutation rates in clams. C)Saxitoxin would select existing mutations in the clam population. D)Clams sensitive to saxitoxin would migrate away from the algae bloom. E)Clams would want to change their Na⁺ transporters to become resistant to saxitoxin.

In the section "Investigating Life: The Nerve of Those Clams!",the toxins responsible for most shellfish poisonings are water-soluble,heat and acid-stable,and ordinary cooking methods do not eliminate the toxins.Would you predict saxitoxin to affect myelinated and non-myelinated neurons equally? A)Yes,because all neurons have Na⁺ transporters. B)No,because saxitoxin will not be able to diffuse through the myelin. C)Yes,because saxitoxin works at the synapses of neurons,and thus would be able to access both types of neurons equally. D)No,because myelinated neurons have a smaller Na⁺ gradient,and thus will be more resistant.