Normal level of hemoglobin per 100ml of blood in a woman is?
A)18g
B)14g
C)12g
D)10g
E)20g

Hint: The hemoglobin level is measured in terms of the amount of hemoglobin in grams (gm) per deciliter (dL) of whole blood. A low level of hemoglobin in the blood definitely leads to a low level of oxygen.

Complete answer
Hemoglobin is carried within the red blood cells and it is a molecule having iron-containing globular proteins having dissolved plasma in it.
-The absolute mass of circulating hemoglobin in the body is represented with the total hemoglobin mass i.e tHb-mass.
-The main function of the hemoglobin is to carry all of the oxygen in the blood.
-Haemoglobin has the capacity to bind 20.1 ml of oxygen in 100 ml of blood and contains about 15 grams of hemoglobin. This is known as the oxygen-binding capacity of the blood.
-From 20 years of age, the average hemoglobin values in women remained near 14gm per 100 ml.

Additional information
A red pigment present in the red blood cells of the blood is called hemoglobin. It is a conjugated protein and a chromoprotein made up of iron and proteins. The total molecular weight of the hemoglobin is 68000.
-Chemically the hemoglobin is a conjugated protein and consists of heme as a prosthetic group and globin as a protein part.
Hemoglobin = Heme + Globin
-Sometimes, hemoglobin can be abbreviated as Hgb is a protein present in the red blood cells that carries iron.
-Oxygen carried by the siren makes hemoglobin an essential component of blood. If blood doesn’t contain enough hemoglobin then cells will not receive enough oxygen.
-The hemoglobin levels may drop if a disease affects the body production of red blood cells and it can ultimately lead to the development of anemia.
-By analyzing a sample of the blood doctor determines the hemoglobin levels. different factors can affect the hemoglobin levels including age, gender, and medical history.

So, the correct answer is, "14g".

Note: -A protein present in the red blood cells helps in carrying the oxygen is known as hemoglobin. How much hemoglobin is present in the blood is measured by the hemoglobin test.
-12 to 20 grams of hemoglobin in every hundred ml of blood is present in a healthy individual.
-For men, 13.5 to 17.5 grams per deciliter and for women, 12.0 to 15.5 grams per deciliter is the normal range for hemoglobin.