GENERAL KNOWLEDGE

GK

HUMAN BODY AND REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The main constituent of hemoglobin is
A
Iron
B
Calcium
C
Chlorine
D
None of these
Explanation: 

Detailed explanation-1: -Iron is an essential element for blood production. About 70 percent of your body’s iron is found in the red blood cells of your blood called hemoglobin and in muscle cells called myoglobin. Hemoglobin is essential for transferring oxygen in your blood from the lungs to the tissues.

Detailed explanation-2: -Iron, which is the chief constituent of Earth’s core, is the most abundant element in Earth as a whole (about 35 percent) and is relatively plentiful in the Sun and other stars.

Detailed explanation-3: -The most common type of hemoglobin in the adult is HbA, which comprises two alpha-globin and two beta-globin subunits. Different globin genes encode each type of globin subunit. The two main components of hemoglobin synthesis are globin production and heme synthesis.

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