In reflex pathways: a) the receptor is a membrane protein b) the efferent is always a motor neuron or hormone c) the efferent is the cell or tissue that does the final work in the pathway d) the integrating center for a neural or neuroendocrine reflex is always some part of the CNS

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

This is the amino acid cysteine. circle the amine group, put a box aroundthe carboxylic acid group and use a different colored pencil/pen to circle the sidechain (r group). h o | ||nh2— c- c-oh | ch2 | sh

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.