Describe the chemical and physical structure and parts of a gene.

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.

the wires in the toaster turning red and the toast crisping and turning brown

it's d - life cycles - apex