Why are RNA and DNA−RNA hybrids denser than double-stranded DNA? Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp blank makes a ribonucleotide molecule slightly heavier than a deoxyribonucleotide molecule, while the volumes occupied are blank. C s C l gradients separate on the basis of density, so a molecule made up of ribonucleotides has a slightly, but significantly, blank density than a molecule made up of deoxyribonucleotides. makes a ribonucleotide molecule slightly heavier than a deoxyribonucleotide molecule, while the volumes occupied are blank makes a ribonucleotide molecule slightly heavier than a deoxyribonucleotide molecule, while the volumes occupied are blank. C s C l gradients separate on the basis of density, so a molecule made up of ribonucleotides has a slightly, but significantly, blank density than a molecule made up of deoxyribonucleotides.. CsCl gradients separate on the basis of density, so a molecule made up of ribonucleotides has a slightly, but significantly, blank makes a ribonucleotide molecule slightly heavier than a deoxyribonucleotide molecule, while the volumes occupied are blank. C s C l gradients separate on the basis of density, so a molecule made up of ribonucleotides has a slightly, but significantly, blank density than a molecule made up of deoxyribonucleotides. density than a molecule made up of deoxyribonucleotides.