Answer:
b. an electrical signal that travels along the axon of a neuron.
Explanation:
An action potential is a nerve impulse or an electrical signal that travels down an axon which cause a change in polarity across the membrane of the axon.
In response to an electrical signal from another neuron, sodium ion (Na+) and potassium ion (K+) (i.e gated ion channels) open and close as the membrane reaches its threshold potential. Na+ channels open at the beginning of the action potential, and Na+ moves into the axon, causing depolarization.
Repolarization occurs when the K+ channels open and K+ moves out of the axon, causing a diferent change in polarity between the exterior of the cell and the interior of the cell. The impulse then travels down the axon in one direction only, to the axon terminal where it signals to other neurons.
It is 3, just because he doesn’t have it, doesn’t mean he isn’t a carrier for it
The term that is being described above is the term ANDROGYNY. Androgyny is the mixture of having both the traits of female and male. One can be called androgynous if he or she possesses both traits like for example, a female having broad shoulders or a hairy body.
The complementary bases on the codon and anticodon are held together by hydrogen bonds, the same type of bonds that hold together the nucleotide in DNA. The ribosome only allows the tRNA to bind to the mRNA if it is carrying an amino acid. This takes place during the process of translation, where the bases of the anticodon form complementary base pairs with the bases of the codon by forming the appropriate hydrogen bonds.