Living organisms make and use three main types of ribonucleic acids (RNA) for their biological functions: ribosomal RNA (rRNA) messenger RNA (mRNA) transfer RNA (tRNA)Match each description to the type of RNA it describes. A. mRNAB. rRNAC. tRNA

ribosomal RNA (rRNA)-aids translation

messenger RNA (mRNA)-gives message

tRNA-transfers amino acids

Explanation:RNA is ribonucleic acid and its of three main types in human with specific function.

tRNA- Transfer ribonucleic acid is located in the cytoplasm and helps in the transfer of amino acid to the appropriate base sequence/nuclotide bases during translation

mRNA - messanger RNA carried genetic information form the nucleus the cell to the ribosome.

It helps read and transform the bases into a protein.

rRNA-ribosomal RNA is located in the ribosme and aids transcriotion of nucleotide bases into protein.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: