NKU BIO 669 TEST 3 EXAM SCRIPT 2026 VERIFIED QUESTIONS AND ANSWERS WITH EXPERT REVIEW

NKU BIO 669 TEST 3 EXAM SCRIPT 2026
VERIFIED QUESTIONS AND ANSWERS
WITH EXPERT REVIEW

●● Polymer of nucleic acids.
Answer: DNA or RNA


●● 3 parts of a nucleotide.
Answer: Pentose sugar, phosphate group, nitrogenous base


●● Pentose sugar.
Answer: Five-carbon sugar (deoxyribose in DNA, ribose in RNA)


●● Phosphate group.
Answer: Links nucleotides together in backbone


●● Nitrogenous base.
Answer: A, T, C, G (DNA) and A, U, C, G (RNA)


●● Role of hydrogen bonds in DNA.
Answer: Hold base pairs together (A-T, G-C); weak and easily broken

, ●● Role of covalent bonds in DNA.
Answer: Form sugar-phosphate backbone; strong and stable


●● DNA base pairing.
Answer: A-T and G-C


●● RNA base pairing.
Answer: A-U and G-C


●● Semi-conservative replication.
Answer: Each DNA molecule has one original strand and one new strand


●● 3 steps of genetic information flow.
Answer: DNA → RNA → Protein


●● Process from DNA to RNA.
Answer: Transcription


●● Process from RNA to protein.
Answer: Translation