How much hemoglobin is present approximately in each normal human red blood cell?
29 pg
Hemoglobin Amount in Red Blood Cells
Hemoglobin is a protein found in red blood cells (RBCs) that is responsible for carrying oxygen from the lungs to the body's tissues and transporting carbon dioxide back from the tissues to the lungs. It contains iron, which gives blood its red color.
The amount of hemoglobin in a normal human red blood cell is remarkably consistent. This measurement is often referred to as the Mean Corpuscular Hemoglobin (MCH).
For a normal human red blood cell, the typical amount of hemoglobin present is approximately 27 to 33 picograms (pg). A picogram is a unit of mass equal to one trillionth (10-12) of a gram.
Looking at the options provided:
- 19 pg - This is lower than the typical range for a normal red blood cell.
- 29 pg - This value falls within the typical range (27-33 pg) for the amount of hemoglobin in a normal red blood cell.
- 39 pg - This is higher than the typical range for a normal red blood cell.
- 49 pg - This is significantly higher than the typical range for a normal red blood cell.
Therefore, the approximate amount of hemoglobin present in each normal human red blood cell is around 29 pg, which aligns well with the standard reference range for MCH.
Important Questions from System Physiology Animal
Which one of the following synaptic vesicles (as observed under transmission electron microscope) contains catecholamines?
Blood hemostasis is the interplay of several intrinsic and extrinsic factors. Deficiency of some of the blood clotting factors and their clinical manifestations are listed below.
Factors
Manifestations
A.
V
i.
Hageman trait
B.
VII
ii.
Hypoconvertemia
C.
IX
iii.
Hemophilia B
D.
XII
iv.
Parahemophilia
Which one of the following options represents all correct matches?
Aldosterone is synthesized exclusively in zona glomerulosa due to the presence of _________ enzyme in addition to a dehydrogenase.
The sensory nerve fibers (Column X) and the sensory receptors connected to different sensory nerves (Column Y) are given below.
Column X
Column Y
Sensory nerve fibre
Sensory receptor
A.
la
i.
Muscle spindle, flower spray ending
B.
Ib
ii.
Pain and cold receptor
C.
II
iii.
Muscle spindle, annulo-spiral ending
D.
III
iv.
Golgi tendon organ
Which of the following options represents the correct match between column X and column Y?
Given below are statements about the Kallmann syndrome.
A. It is a condition of hypogonadotropic hypogonadism.
B. There is a loss of sense of smell in such individuals.
C. This syndrome is most common in women.
D. It happens due to mutation of the KALIG1 gene on X-chromosome that codes for an adhesion molecule necessary for the normal development of the gustatory nerve.
Which one of the following options has the combination of all correct statements?
