ASU BIO 340 EXAM 3 FINAL PAPER 2026 EXAM Q AND A STUDY GUIDE COMPLETE QUESTIONS AND ANSWERS

ASU BIO 340 EXAM 3 FINAL PAPER 2026
EXAM Q AND A STUDY GUIDE COMPLETE
QUESTIONS AND ANSWERS

●● d. Denaturation, annealing, extension.
Answer: The correct order of steps in a PCR cycle is:


a. Extension, denaturation, annealing
b. Annealing, extension, denaturation
c. Annealing, denaturation, extension
d. Denaturation, annealing, extension


●● c. Amplify a small amount of DNA sequence.
Answer: The goal of the polymerase chain reaction (PCR) is to:


a. Sequence DNA
b. Digest bacterial plasmids
c. Amplify a small amount of DNA sequence
d. Cleave DNA molecules


●● b. Two strands of DNA double helix are held together by covalent
bonds

, (hydrogen bonds, not covalent bonds).
Answer: Which of the following is incorrect?


a. Cytosine pairs with Guanine
b. Two strands of DNA double helix are held together by covalent bonds
c. Nucleotides in DNA consist of deoxyribose sugar, phosphate group
and a nitrogenous base
d. Adenine pairs with Thymine


●● d. A phosphate group, a nitrogenous base, a deoxyribose.
Answer: What are the 3 main components of a DNA nucleotide?


a. An alcohol functional group, a nitrogenous base, a ribose
b. An alcohol functional group, a nitrogenous base, a deoxyribose
c. A phosphate group, a nitrogenous base, a ribose
d. A phosphate group, a nitrogenous base, a deoxyribose


●● d. 95.
Answer: At which temperature does a DNA double helix denature?


a. 15