The red blood cells have proteins, hemoglobin and myoglobin, that are responsible for the storage of oxygen from the lungs and transporting it through the body. When the hemoglobin and myoglobin are low, it is because the iron levels are low. When this occurs, the blood, which carries the oxygen, reduces the ability to process its work. When this occurs, anemia, a condition that may cause chest pain, tiredness, and headaches.
Answer:
D. cell theory
Explanation:
According to my research on studies based on genetics and biology, I can say that based on the information provided within the question the idea being described in this situation is called Cell Theory. This theory (like mentioned in the question) states that all living organisms are made up of cells, which are the building blocks of all organisms, and that these cells come from pre-existing cells.
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Answer:
HIV (human immunodeficiency virus) is a virus that attacks the body's immune system. If HIV is not treated, it can lead to AIDS (acquired immunodeficiency syndrome).
