PO4-sugar-base:
Correct answer: B. Nucleotide
- A. 2 nm
- B. Nucleotide
- C. DNA replication
- D. Prokaryotes
Explanation
PO4-sugar-base refers to the three components of a nucleotide, which are a phosphate group (PO4), a sugar molecule, and a nitrogenous base. These components combine to form the building blocks of nucleic acids like DNA and RNA. The phosphate group attaches to the sugar molecule, forming the "backbone" of the nucleotide, while the nitrogenous base attaches to the sugar molecule. This combination of components forms the structure of nucleotides, which then join together to form DNA and RNA strands through phosphodiester bonds between the phosphate groups.
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About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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