What does reverse transcriptase use to form dna

-RNA molecule.

Explanation:

Reverse transcriptase or RT can be defined as an enzyme that synthesizes cDNA (complementary DNA) molecules by using RNA molecule as template. This process is known as reverse transcription.

Reverse transcriptase enzyme is found in many RNA viruses, prokaryotes and eukaryotes. Telomerase in an example of reverse transcriptase, which is found in eukaryotes and replicates ends of linear chromosomes.

Thus, the correct answer is 'RNA.'

d. organisms have cells with different shapes and functions.