Individuals with down syndrome have an extra chromosome 21. this is an example of which type of chromosome disorder? duplication nondisjunction translocation

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 contamination

we are putting to many trash.