Answer: The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.
Answer:
A) Listeria monocytogenes
Explanation:
Listeria monocytogenes
It is the specific pathogen bacteria which causes the inefection , Listeriosis .
It is a anaerobic bacteria , hence can survive even in the absence of oxygen . It has the capability to grow and reproduce inside its host cell .
It is the most virulent foodborne pathogens .
The source by which this bacteria can spread is food .
Answer:
El sistema inmune se encarga de mantenernos sanos y combatir enfermedades.
Explanation:
