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GENOMICS REVIEW
Name Raina Bonilla Date 12/16/2021 Choose best answer, darken appropriate ci
Question | Answer |
---|---|
1. DNA is composed of nucleotides. Which of the following best describes the components of a nucleotide? | d. deoxyribose, a phosphate groups and a nitrogenous base |
2. What type of bonds joins one strand of DNA to another strand of DNA, forming a double helix? | b. hydrogen bonds |
3. Which scientist(s) identified DNA as the genetic material of inheritance and determined its structure? | b. Watson and Crick |
4. Which of the following statements is false? | d. DNA replicates conservative |
Questions #5-7 refer to the following: | a. uracil nucleotide b. guanine nucleotide c. translation d. transcription |
5. DNA → RNA | d |
6. found only in RNA | a |
7. occurs in the cytoplasm | c |
8. In gel electrophoresis, DNA fragments migrate toward the ? electrode; the ? the fragment, the faster it moves through the gel. | c. positive; smaller |
9. DNA is NOT found in | b. trimmed hair |
10. Electrophoresis sends an electric current through | a. buffer |
11. The end products of translation is/are | a. polypeptide |
12. All of the following combinations of nucleotides are examples of normal base pairing except: | c. thymine RNA to a adenine DNA |
13. The genetic instructions for forming a polypeptide chain are carried to the ribosome by the | c. mRNA |
14. The DNA of an elephant and the DNA of a cherry tree will probably differ in all of the following respects except the | b. kinds of nucleotides utilized in forming DNA |
Use the following answers for # 15-18 | a. transcription b. translation c. DNA methylation d. histone |
15. The addition of groups to certain bases f DNA after DNA synthesis; this is thought to be an important control mechanism for gene expression | c |
16. The synthesis of polypeptides from the genetic information coded in mRNA | b |
17. The synthesis of RNA from a DNA template | a |
18. The proteins around which the DNA molecule tightly wraps in a eukaryotic chromosome. | d |
19. A goat can produce milk containing the same polymers present in the silk produced by spiders when particular genes from a spider are inserted into the goat’s genome. Which of the following reasons describes why this is possible? | c. the processes of transcription and translation in the cells of spiders and goats are fundamentally similar. |
20. Restriction enzymes are generally used in the laboratory for which of the following reasons? | d. cutting DNA molecules at specific locations |
21. A particular triplet code of DNA is AAA. What is the anti-codon? | a. AAA |
22. Gel electrophoresis can also be used for which of the following purposes? | d. to separate out the proteins in a mixture |
23. When the electric field was applied, the fragments of DNA in each of the 3 samples migrated to different locations along the gel because the fragments differed in | c. size |
24. How many sites of DNA were cut by the particular restriction enzyme used below? | 6 sites |
Use the following to answer #25-27 | a. tRNA b. mRNA c. rRNA |
25. travels out of nucleus | b |
26. loosely binds to free amino acids in the cytoplasm | a |
27. combines with proteins to assemble amino acids in correct order | c |