The steps of the action potential are listed below in random order. A. The nerve impulse moves down the axon.
B. The inside of the membrane becomes positive, and the outside becomes negative.
C. A stimulus is received by the dendrites.
D. The membrane has a resting potential that is positive on the outside and negative on the inside.
Which of the following lists the steps in the correct order?
O A, B, C, D
O D, C, B, A
O B, C, A, D
O D, A, B, C

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

Which of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.