I think it's D ..... a membrane may contain hundreds of different proteins. ... Some integral proteins have only one segment that covers the whole membrane, others cross several times.
Answer:
Bet texting you right now!
Explanation:
7 is atomic symbol 9 is atomic density 8 is the atomic number
Answer:
is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.
Explanation:
The correct reference for this isotope is A. Oxygen-18.
