The difference between a ribonucleotide and a deoxyribonucleotide is PDF

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The difference between a ribonucleotide and a deoxyribonucleotide is: 1. a deoxyribonucleotide has an -H instead of an -OH at C-2. 2. a deoxyribonucleotide has an -H instead of an -OH at C-3. 3. a ribonucleotide has an extra -OH at C-4. 4. a ribonucleotide has more structural flexibility than deoxyribonucleotide. 5. a ribonucleotide is a pyranose, deoxyribonucleotide is a furanose. 1. a deoxyribonucleotide has an -H instead of an -OH at C-2. The phosphodiester bonds that link adjacent nucleotides in both RNA and DNA: 1.always link A with T and G with C. 2.are susceptible to alkaline hydrolysis. 3.are uncharged at neutral pH. 4.form between the planar rings of adjacent bases. 5.join the 3' hydroxyl of one nucleotide to the 5' phosphate of the next. 5.join the 3' hydroxyl of one nucleotide to the 5' phosphate of the next. Which of the following does not contribute to the octameric histone core? 1.H1 2.H2A 3.H2B 4.H3 5.H4 1.H1 Approximately 45% of the human genome is composed of : 1. Short and long interspered DNA and other transposons 2. introns 3. Protein encoding genes 4. Microsatellite DNA 5. Centromeres and telomeres 1. Short and long interspered DNA and other transposons The 5' -> 3' exonuclease activity of E. coli DNA polymerase I is involved in: 1.formation of a nick at the DNA replication origin. 2.formation of Okazaki fragments. 3.proofreading of the replication process. 4.removal of RNA primers. 5.sealing of nicks by ligase action. 4.removal of RNA primers. What is the problem in DNA replication that Telomerase solves 1.The lagging strand cannot act as a template to synthesise a new DNA strand right to the end of the molecule 2.The leading cannot act as a template to synthesise a new DNA strand right to the end of the molecule 3.Neither the leading nor the lagging strand can synthesise a new DNA strand right to the end of the molecule 4.Telomerase is used to improve the fidelity of DNA polymerase III 5.Telomerase solves the problem of slow replications rates by speeding up the process. 1.The lagging strand cannot act as a template to synthesise a new DNA strand right to the end of the molecule...