Answer:
Hemoglobin!
Explanation:
Hemoglobin is the component that carries O2 in blood. Very important for the body!
Answer: I believe the Lateral Lines are made of mechanoreceptors called neuromasts....
I know that hair cells, like the ones inside a human ear, are used as well.
Answer:
Virus enters into the host cell through a process called endocytosis.
Explanation:
Endocytosis is a process in which molecule enters into the cell through cell membrane. Virus also enter into the host cell through this process. After entering, the virus starts replication and grow in numbers inside the host cell and take nutrients from it which is used in the process of reproduction. When virus population increases, it cause infection to the neighboring cells.
Sickle-cell disease is common in tropical and sub-tropical regions because being a carrier, carrying a single sickle-cell mutation (sickle cell trait), affords some resistance to malaria.
