Answer:
A. Sex chromosome.. Example.. Turner's syndrome
Answer:
B. Viruses are smaller than Bacteria and Archaea
C. Viruses do not belong to any of the three domains: Bacteria, Archaea, and Eukarya
E. Viruses are as old as Bacteria and Archaea
F. Viruses are unable to perform replication on their own
Answer:
https://youtu.be/dQw4w9WgXcQ
Explanation:
copy it open a new tab paste it search it and then theres a vid of me explaing it and the answer
Answer:
Methotrexate inhibits the synthesis of DNA, RNA, and protein synthesis of the cells in the experiment.
Explanation:
Methotrexate competitively inhibits the enzyme dihydrofolate reductase (DHFR) which is involved in the synthesis of tetrahydrofolate from the inactive dihydrofolate. The methotrexate blocks the enzyme by binding to its active site thereby preventing further reaction of the dihydrofolate reductase enzyme and dihydrofolate. Tetrahydrofolate is a useful material for the de novo synthesis of thymidine, a nucleoside. And without thymidine, DNA synthesis is hindered. Methotrexate therefore inhibits the synthesis of DNA, RNA, thymidylates and of course protein synthesis.
