Answer:
25: B.
26: D.
27: C.
28: C.
29: A. (I'm not fully sure about this one....)
30: D.
31: B.
32: F. (Again, not fully sure, but <em>pretty</em> sure)
Answer:
stretching them back and forth
Explanation:
DNA contains sugar deoxyribose, while RNA contains sugar ribose,
DNA is a double-stranded molecule, while RNA is a single-stranded molecule.