Write an informative two-paragraph essay on how the transmission of a nervous impulse occurs in the body. Make sure to include the following terms in your essay: action potential, resting potential, depolarization, repolarization, axon, myelin, synapse, and neurotransmitters.

When analyzing tree rings, what do scientists assume a thin ring indicates?

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food