Question

The name of Temin and Baltimore is associated with

• A. Photorespiration
• B. RNA synthesis
• C. Reverse transcription
• D. All of the above

Answer 1

Answer: (C)

Reverse transcription

Rubisco has affinity for carbon dioxide as well as oxygen as a substrate. The condensation of oxygen with ribulose 1,5-bisphosphate to form 3-phosphoglycerate and 2-phosphoglycolate is called photorespiration; both are metabolically useless product. RNA synthesis is the transcription of deoxyribonucleotide sequence of DNA template strand into ribonucleotide of RNA by RNA polymerase enzyme. Reverse transcription is formation of cDNA (complementary DNA), double-stranded DNA, from a mRNA template. This is carried out by the enzyme reverse transcriptase. Temin and Baltimore discovered the enzyme responsible for reverse transcription in two RNA tumour viruses.