Explanation:
The purines are ribose and deoxyribose
<u>Answer</u>: Cystic fibrosis is a genetic disorder that causes thick mucus secretions.
<u>Explanation</u>:
- <em>Cystic fibrosis</em> is a genetic disorder caused by mutations in a gene that makes a protein called CFTR (cystic fibrosis transmembrane regulator).
- The CFTR protein normally functions as a channel for transport of chloride ions in cells responsible for mucus production.
- A person suffering from cystic fibrosis produces abnormal CFTR protein or no CFTR protein at all.
- This is the reason that thick, sticky mucus is produced instead of the thin, watery kind.
B: between a nonmetal and a metal.
Answer:
The force that blood exerts against the wall of a vessel is called <u>blood </u><u>pressure</u><u>.</u>
Class 10 - NCERT Book - definition.
