Question

write down the relative size of molecules of hemoglobin and watermelon​

Answer 1

Hemoglobin (American English) or haemoglobin (British English) (Greek αἷμα (haîma, “blood”) + -in) + -o- + globulin (from Latin globus (“ball, sphere”) + -in) (/ˈhiːməˌɡloʊbɪn, ˈhɛ-, -moʊ-/[1][2][3]), abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein in the red blood cells (erythrocytes) of almost all vertebrates[4] (the exception being the fish family Channichthyidae[5]) as well as the tissues of some invertebrates. Hemoglobin in blood carries oxygen from the lungs or gills to the rest of the body (i.e. the tissues). There it releases the oxygen to permit aerobic respiration to provide energy to power the functions of the organism in the process called metabolism. A healthy individual has 12 to 20 grams of hemoglobin in every 100 ml of blood.

hemoglobin
(heterotetramer, (αβ)2)
1GZX Haemoglobin.png
Structure of human haemoglobin. α and β subunits are in red and blue, respectively, and the iron-containing heme groups in green. From PDB: 1GZX​ Proteopedia Hemoglobin
Protein type
metalloprotein, globulin
Function
oxygen-transport
Cofactor(s)
heme (4)
Subunit name Gene Chromosomal locus
Hb-α1 HBA1 Chr. 16 p13.3
Hb-α2 HBA2 Chr. 16 p13.3
Hb-β HBB Chr. 11 p15.5
In mammals, the protein makes up about 96% of the red blood cells' dry content (by weight), and around 35% of the total content (including water).[6] Hemoglobin has an oxygen-binding capacity of 1.34 mL O2 per gram,[7] which increases the total blood oxygen capacity seventy-fold