The right answer is <span>A) semi-permeable membrane
<span>A semi-permeable membrane is a membrane permeable to a liquid (solvent) and impermeable (or poorly permeable) to substances dissolved in the liquid (solute).
</span>The tubule of a kidney consists of a semi-permeable membrane and has also specific transporters which allow absorption and reabsorption. These "tools" allows some substances like ions to be absorbed/reabsorbed (by the transporters), without any changes in the concentration of the other substances (because both the membrane and the transporters stopped them).</span>
I think the correct answer from the choices listed above is option A. The <span>type of mutation that would convert a proto-oncogene into an oncogene would be </span><span>a deletion of most of the proto-oncogene coding sequence. Hope this answers the question. Have a nice day.</span>
The three major rocks are igneous, sedimentary, and metamorphic
the two types of igneous rocks are diorite and gabbro
Valence electrons play a large role in atom bonding.
here this may help,
http://slideplayer.com/slide/5751261/