Read the following statements that describe what happens as an impulse travels. what is the correct order in which the steps occur? 1) the impulse continues to travel down the axon away from the cell body. 2) na+ gates close and k+ ions flow back out of the cell restoring the resting potential. 3) gated k+ and na+ channels are closed. the inside of the cell is slightly negative compared to the outside. 4) the neuron receives a stimulus great enough to start an impulse. 5) gated na+ channels open. the net movement of na+ ions into the cell produces the action potential..

Average annual precipitation and are the two major features that define the biomes on earth.

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.