A :-) Sickle cell disease occurs more often among people from parts of the world where malaria is or was common. It is believed that people who carry the sickle cell trait are less likely to have severe forms of malaria.
Answer
D.Osteoblasts
Explanation:
Appositional growth is the increase in the diameter of bones by the addition of bony tissue at the surface of bones. Osteoblasts at the bone surface secrete bone matrix, and osteoclasts on the inner surface break down bone. The osteoblasts differentiate into osteocytes.
Answer:
No
Explanation:
They have different division rates as some are more important for the body's health than others.
Ex) Skin cells repair very fast as they are on the exterior of the body and are constantly damaged, needing to be repaired quickly to prevent infection.
