Question

question 19
1 pts
a chromosome is made up of
dna and rna.
dna only.
proteins and phospholipid
dna and proteins.
nucleotides and microtubules.

Explanation:

Chromosomes consist of deoxyribonucleic acid (DNA) wrapped around specialized proteins called histones, which help package and organize the DNA into a compact structure. RNA is not a core structural component of a chromosome, phospholipids form cell membranes, microtubules are part of the cytoskeleton, and nucleotides are the building blocks of DNA/RNA but not the full structure of a chromosome.

Answer:

DNA and proteins.