Question

a chromosome is:
the sequence of dna that does not hold instructions for proteins.
a large protein found in the golgi complex of human cells.
a large protein complex that surrounds and protects dna.
a single, large dna molecule found in the nucleus of human cells.
all the genetic material found within a person’s cells.

Explanation:

Chromosomes are structures in the cell nucleus composed of a single large DNA molecule wrapped around proteins (histones). The correct option aligns with this definition: DNA molecules in the nucleus. Other options are incorrect—non-coding DNA is not a chromosome, chromosomes are not proteins/Golgi components, and histones (not chromosomes) are the protein complexes protecting DNA; all genetic material is the genome, not a single chromosome.

Answer:

a single, large DNA molecule found in the nucleus of human cells.