1. In the Hershey Chase Experiment, DNA was labeled with ____, and bacteriophage protein was labeled with _____. radioactive phosphorous, radioactive sulfar radioactive sulfur, radioactive phosphorous codons, anticodons DNA Polymerase, RNA polymerase
2. In the ladder anology of the DNA molecule, the "rungs" of the ladder are: sugars phosphates paired nitrogenous bases joined sugar and phosphate
3. Which of the following best describes the arrangement of the sides of the DNA molecule? twisted antiparallel bonded alternating
4. If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be expected. 10% 20% 40% 80%
5. The enzymes that break hydrogen bonds and unwind DNA are: primers forks helicases polymerases
6. DNA replication results in: 2 completely new DNA molecules 2 DNA molecules that each contain a strand of the original 1 new DNA molecule, 1 old molecule is conserved 1 new molecule of RNA
7. During replication, what enzyme adds complimentary bases? helicase synthesase replicase polymerase
8. Transcription results in: an amino acid chain messenger RNA complementary DNA okazaki fragments
9. How many different amino acids are used to assemble proteins in cells? 3 20 100 an infinite number
10. A stretch of chromosome that codes for a trait can be called a(n): chromatid replication fork gene base-pair
11. In RNA, _____ codon(s) translate to ______ amino acid(s) 1, 1 3, 1 3, 3 1, 20
12. Translation begins: at the replication fork on the lagging strand at the start codon in the nucleus
13. A nucleotide consists of: a phosphate and a base a phosphate, and a sugar a base and an amino acid a phosphate, a sugar, and a base
14. The sugar in RNA is _____, the sugar in DNA is _______ deoxyribose, ribose ribose, deoxyribose ribose, phosphate ribose, uracil
15. Which of the following is found on RNA but not DNA? uracil deoxyribose phosphate adenine
Score = Correct answers:
DNA QUIZ 2