Paramecium, possess that counteract the effects of osmosis. a) oral grooves b) ciliated pellicle c) contractile vacuoles d) micro and macro nuclei

C

Explanation:

Contractile Vacuoles are a cellular structure that regulates osmosis.

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.