JAMB - Chemistry (2002 - No. 29)
Which of these pairs are synthetic and natural macromolecules respectively?
Haemoglobin and nylon, creatine and polyethylene
Nylon and polyethlene, creatine and Haemoglobin
Nylon and creatine, polyethylene and haemoglobin
Creatine and Polyethylene, nylon and haemoglobin
Giải thích
A macromolecule is a very large molecule, usually with a diameter of 100 to 10,000 angstroms (10−5 to 10−3 mm).
Nylon is a synthetic macromolecule that's made up of repeating subunits called monomers. It's created through a condensation polymerization reaction between adipic acid and hexamethylene diamine.
Polyethylene is a synthetic polymer, which means it's made by scientists and engineers from petroleum oil.
Creatine is a non-protein compound that is derived from amino acids, and is produced in the body by the liver, kidneys, and pancreas. It is also found in protein-rich foods like meat, fish, and milk.
Hemoglobin is a natural organic(natural) macromolecule.