Reference no: EM132526005
1. Is there an enzyme that attaches amino acids to each other during polypeptide synthesis? Explain.
2. Which type of RNA brings the right amino acid to the correct codon at the ribosome during translation?
3. Which type of RNA is a structural and functional component of a ribosome?
4. The ribosome has three sites, "E P and A". Can you tell why they are labeled with these letters?
5. Describe the major events that happen at each stage of translation:
Translation initiation
Translation elongation
Translation termination
6. After a new polypeptide gets released into the lumen of the rough ER, what happens to it? Does it stay there or go somewhere else? Where does it go?
7.Define point mutation. Are all point mutations the same or are there different types? If so, what are they?
8. Define frame shift mutation.
9. We usually think of mutations as being "bad", but this is only partially true: Explain
10. Give a modern, inclusive definition of a "gene".
11.Unlike eukaryotic cells, in bacteria transcription and translation are "linked". Explain how/why
12. The DNA replication mechanism is semi-conservative. What does this mean? To explain, draw it.
13. When a new molecule of DNA is made, the new molecule has only brand new DNA strand. True or False? Explain.
14 Define "template" as the term is used in describing DNA replication.
15What is the function of DNA polymerase? To answer, remember that DNA polymerase is an ENZYME and enzymes catalyze chemical reactions. (So, to answer about the function of DNA polymerase, you need to describe chemical reaction it catalyzes)
16.What is the name of the enzyme that unwinds the double helix of DNA?
17What is the function of the RNA primer?
18What is the name of the enzyme that makes the RNA primer during DNA synthesis?
19.During which phase of the cell cycle is DNA replicated?
20.DNA replication happens on one side by the making of the lagging strand, and on the other by the synthesis of the leading strand. Why are the two sides different? Explain, using a diagram.
21. Does DNA replication ever make any errors? What is the consequence?
22. What is a "mutagen"?