The measurement of the pressure gradient of two solutions that are separated by a selectively permeable membrane is called... A. Osmolarity
B. Equilibrium
C. Homeostasis
D. Tonicty

In the human body fibrinogen is necessary for sealing cuts and stopping the loss of blood. since fibrinogen is made of chains of amino acids it is an example of which type of organic molecule

(amoeba sisters video recap: pedigrees and need

Ascientific idea becomes valid when it is what?