A. Correct. RNA means Ribonucleic acid.
b. Correct. RNA contains uracil instead of thymine. DNA doesn't contain uracil but thymine.
c. Incorrect. RNA is single stranded.
d. Correct. Plus, DNA contains deoxyribose.
Physical damage to the lamina propria will probably result in nosebleeds.
The lamina propria, is a thin layer of connective tissue,and is part of the mucosa. It contains small blood vessels.
This suggests that tetanus bacteria produces endospores.
Answer: 4, a phospholipid bilayer
Explanation: