Differential medium can separate gram negative bacteria from
grampositive bacteria.
true or false?

True. Selective media can be used to separate gram negative from gram positive bacteria.

Explanation: Selective media allow certain types of organisms to grow, and inhibit  the growth of other organisms.

For example: Media containing potassium  tellurite will  inhibit the growth of gram negative bacteria while media supplemented with penicillin will inhibit the growth of gram positive  bacteria.

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.