In describing the initiation and transmission of action potentials in neurons, it would be INCORRECT to say that

A. a stimulus to the neuron can either depolarize or hyperpolarize the neuronal membrane.
B. the resting potential is maintained by differential ion permeabilities and the sodium-potassium pump.
C. the rate of transmission of an action potential is directly related to the diameter of the axon.
D. information about the intensity of a stimulus is conveyed by changes in the size of the action potential generated.


Answer: D

Biology & Microbiology

You might also like to view...

Which amino acid would Nirenberg and Leder have found when they used the triplet UAG?

A. Isoleucine B. Proline C. Lysine D. Threonine E. None of these

Biology & Microbiology

Phenotypic similarity that evolved independently in different lineages is called ____

a. cladogenesis b. anagenesis c. embryogenesis d. homology e. homoplasy

Biology & Microbiology

Homeotic genes contain a homeobox sequence that is highly conserved among very diverse species. The homeobox is the code for that domain of a protein that binds to DNA in a regulatory developmental process. Therefore, you would expect that _____

A) homeotic genes are selectively expressed as an organism develops B) homeoboxes cannot be expressed in nonhomeotic genes C) homeotic genes in apes and humans are very different D) all organisms must have homeotic genes

Biology & Microbiology

Which of the following mechanisms normally repairs pyrimidine dimers?

A) base-excision repair B) light repair C) single-strand repair D) error-prone repair E) SOS response repair

Biology & Microbiology