【单选题】A patient has a microcytic, hypochromic anemia. In order to ascertain the cause of the anemia, the patient ’ s hemoglobin was isolated, and it was determined that there was much more β -chain present ...
A.
Alkali causes the two strands of DNA and RNA to separate.
B.
Heat causes the two strands of DNA and RNA to separate.
C.
Alkali cleaves the phosphodiester bonds of DNA and RNA, degrading them to nucleotides.
D.
Alkali separates the strands of DNA and degrades RNA to nucleotides.
E.
Alkali separates the strands of RNA and degrades DNA to nucleotides.
【单选题】A 20-year-old woman is brought to the emergency room by her fam- ily because they have been unable to get her to eat or drink anything for the past 2 days. The patient, although awake, is completely u...