Which of the following is a factor that determines the rate of impulse propagation, or conduction velocity, along an axon? a) length of the axonb) the number of axon collaterals extending from a truncated axonc) degree of myelination of the axond) whether the axon is located in the central nervous system or in the peripheral nervous system

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c.carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit