Answer:
1. Purines
2. States that DNA composition varies among species
3. Hydrogen Bond
4. Purines
<em>Answer to #2 is a little iffy </em>-- sorry
Explanation:
Pyrmidines have two rings
Purines have one ring
Complementary bases are connected by hydrogen bonds.
The outer membrane is technically the skin and covers the organelle.
The inner membrane folds over many times and creates layered structures called cristae.
:)
Answer:
The answer is by proving that gravity and inertia working together explained the motions of planets and their moons.
Explanation:
Well, do plants have cheeks? No! So it must be an animal cell!
