Answer:
element
Explanation:
The number of protons in an atom determines its element on the periodic table. You can identify how many protons are in an element using it's atomic number.
Answer:
Cell membranes are semi-permeable, which works like a sieve that determines what enters and leaves the cells.
Explanation:
It is semi-permeable and it allows molecules to diffuse inside.
<em>Feel free to mark it as brainliest :P</em>
A specific organ on which a hormone, drug, or other substance acts
Answer:
Exocytosis
Explanation:
exo meaning out, cyt meaning cell, so the whole word literally means cell out, or stuff taken out of the cell. This is also what secretion means
