Question

Normal hemoglobin content of an adult man is
A)10.5 gm/100ml of blood
B)12.5 gm/100ml of blood
C)14.5 gm/100ml of blood
D)13.5 gm/100ml of blood

Answer 1

Hint: In red blood cells, a protein is present which helps to carry oxygen to other body organs and tissue is known as Haemoglobin. It also helps to transport carbon dioxide from organs and tissue back to the lungs.

Complete answer
Four subunits are present in a molecule of Haemoglobin each comprising an iron-containing pigment called heme and a protein called globulin.
-Alpha and Beta are the two subunits of hemoglobin that carry 1.34 ml of oxygen. The oxygen-carrying ability of the blood is directly proportional to its hemoglobin concentration. The numbers of red blood cells do not indicate blood's oxygen content because some cells may contain more hemoglobin than others.
-The level of hemoglobin is more at birth i.e from 16 to 20 g/dL, and then gradually becomes low observed at 3 to 6 months, and then the value becomes 9-11 g/dL which is considered normal.
-Due to the stimulatory effect of androgens on the bone marrow, men have slightly higher levels of hemoglobin i.e (13.8 to 17.2 grams per deciliter (g/dL) or 138 to 172 grams per liter (g/L),

Additional information
Hemoglobin is the predominant protein in the red blood cells that helps in carrying oxygen pigment in the blood. The total hemoglobin is the amount of hemoglobin in gram per deciliter of whole blood.
Here, a deciliter means 100 ml.
-The ranges of hemoglobin always depend on the age, adolescence, and sex of a person.
The normal range of hemoglobin are -
1) Newborn have - 17-22 gm/dl
2) Children have -11-13 gm/dl
3)Adult males have- 14-18 gm/dl
4)Adult women have-12-16 gm/dl
Always remember that this value may vary slightly.

So, the correct answer is, "14.5 gm/100ml of blood".

Note
-The hemoglobin level is measured in grams per deciliter of whole blood. Hemoglobin normal range depends on the age and the beginning of adolescence and the gender of the person.
-Men higher level of hemoglobin as compared to women due to the stimulatory effect of antigens on the bone marrow.