Which enzyme unwids supercoiled DNA?
Topoisomerase
Where are the ribosomes assembled?
INSIDE the nucleus
Capillary occlusion is thought to occur by …
Endothelial damage causing multicellular (platelets, white cells) aggregates which occlude the capillary.
An acute pain crisis is typically caused by a capillary occlusion in the …
Bone
Sickle cell disease can be treated with hydroxyurea because it …
Increases the synthesis of HbF (foetal Hb), which has a greater affinity for oxygen than HbA.
In hypoxia, the abnormal HbS…
polymerises