7. What are the 4 nitrogen bases? 1. 2. 3. 4. 8. What is their purpose? Why does their order matter? Answer in complete sentences. How does this structure allow a DNA molecule to be copied to make another identical molecule? The answer to this ion is that the nitrogen bases interact with one another in predictable ways. Pairing between nitrogen bases on opposite strands is always the same. Notice that the pairing that takes place between nitrogen bases is specific in DNA strands. Adenine, a large base,

If a DNA double helix contains 28% T nucleotides, then what is the percentage of A nucleotides?

Describe in detail the structure of DNA. Of what is a nucleotide composed? Which are thepurines and pyrimidines? What are the bonding rules? What kind of bond holds the two DNAstrands together?

Both DNA and RNA are long chains of nucleotides. Nucleotides are made up of a phosphate group, a nitrogen base, and a five-carbon sugar. The carbons in the sugar (deoxyribose in DNA and ribose in RNA) are numbered 1′ to 5′. The nitrogen base is on the 1′ carbon, the phosphate is on the 5′ carbon, and there is a hydroxyl group on the 3′ carbon of a nucleotide. When nucleotides are joined together, the hydroxyl group is replaced by the phosphate from the 5′ carbon of the second nucleotide. Because of this, nucleic acids have directionality.Which of the following rows is true regarding transcription and translation? Select one: a. Transcription Translation mRNA grows 5' to 3'. Ribosomes move 3' to 5' along mRNA. b. Transcription Translation mRNA grows 3' to 5'. Ribosomes move 5' to 3' along mRNA. c. Transcription Translation mRNA grows 3' to 5'. Ribosomes move 3' to 5' along mRNA. d. Transcription Translation mRNA grows 5' to 3'.…