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In DNA structure, what is the DNA backbone primarily made of?
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7. DNA and Chromosome Structure
DNA Structure
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In the context of DNA structure, why do scientists classify DNA as a macromolecule?
A
Because DNA is a very large polymer made of many repeating nucleotide subunits linked into long strands.
B
Because DNA is a lipid-based molecule whose main function is energy storage.
C
Because DNA is a small monomer that cannot be broken into simpler units.
D
Because DNA is an inorganic crystal lattice with no repeating subunits.
Guida verificata passo dopo passo1
Understand the definition of a macromolecule: Macromolecules are very large molecules typically composed of repeating smaller units called monomers.
Recall the structure of DNA: DNA is made up of nucleotide subunits, each consisting of a sugar, phosphate group, and nitrogenous base.
Recognize that these nucleotides are linked together in long chains, forming a polymer.
Connect the concept that because DNA is a long polymer made of many repeating nucleotide units, it fits the definition of a macromolecule.
Eliminate incorrect options by noting that DNA is not lipid-based, not a small monomer, and not an inorganic crystal lattice.
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