BIOMOLECULES AND ENZYMES

BIOLOGY

CARBOHYDRATES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does the term ‘dimer’ mean?
A
single unit
B
double unit
C
triple unit
D
many units
Explanation: 

Detailed explanation-1: -di·mer ˈdī-mər. : a compound formed by the union of two radicals or two molecules of a simpler compound. specifically : a polymer formed from two molecules of a monomer.

Detailed explanation-2: -Dimers are oligomers composed of two monomers that are similar in structure and joined by a chemical bond.

Detailed explanation-3: -The dimer is held together by two hydrogen bonds with a total strength of 66.5 kJ per mole of dimer. At 25oC, the equilibrium constant for the dimerisation is 1.3×103 (pressure in atm).

Detailed explanation-4: -In biochemistry, a protein dimer is a macromolecular complex formed by two protein monomers, or single proteins, which are usually non-covalently bound. Many macromolecules, such as proteins or nucleic acids, form dimers. The word dimer has roots meaning “two parts", di-+-mer.

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