Answer: The statement is true
Explanation:
Persons with type O- blood are often referred to as the "universaldonors" based on the presence of neither type A or B antigen on the red blood cell, coupled with anti-A and anti-B antibodies. Hence, since
the type O blood lacks antigens, it does not clump when mixed with any of the other blood types in the recipient plasma
Thus, the type O blood is a universal donor
Answer:
sinusitis
Explanation:
Sinusitis is defined as the swelling or inflammation of the linings of the tissue of sinuses. It is a condition where the cavities where the nasal cavities swells up.
The healthy nasal cavity or sinuses are always filled with air. But sometimes they get blocked and then they are filled with a fluid where bacteria germs grow and causes infection. This causes swelling up of sinuses cavities and a lot of pain is experienced by the person.
Other symptoms are runny nose, headache, nasal congestion and facial pain.
Answer:
They can not live on their own
Explanation:
The main difference between cells and viruses is that viruses need another cell to infect so that they can reproduce. Cells on the other hand can reproduce on their own.
The brain and the spinal cord are the organs of the central nervous system.