The Golgi apparatus is a membrane-bound organelle within a cell. Transport vesicles budding off from the rough endoplasmic reticulum fuse on one side of the Golgi apparatus and leave from the other side. The figure shows how vesicles fuse and move through the Golgi apparatus. Which purpose is served by the fusion and movement of the vesicles from one side of the Golgi apparatus to the other?

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate