C. compound
water is a compound and is pure
can you possibly provide the passage because without it i cant really answer sorry i wasn't much help
The cell membrane is one phospholipid bilayer, and the nuclear membrane is two phospholipid bilayers. Cell and nuclear membranes are different.The cell film encases the whole cell while the atomic layer encases the core. ... WHEREAS, Cell membrane covers the whole outer with abi-layer of the cell.
1. Phosphates and sugars (deoxyribose)
2. yes
3. the order of the bases aren't but what they pair with are
4. five
5. ten
6. the sequences vary between all organisms