Reference no: EM133248425

1. Most of your DNA does not encode for proteins useful to you. What is one example from this lecture that demonstrates this phenomenon?

2. What makes your genome less dense than a viral genome?

3. Of the 4 polymerases listed in lecture, which use DNA templates and which use RNA templates to make nucleic acid molecules?

4. Where do you think viruses came from? What is your favorite hypothesis, and why do you like it?

5. Look back at the central dogma of molecular biology. Now that you know of reverse transcriptase and RNA dependent RNA polymerase, what does this mean about the central dogma of molecular biology?

6. Of the 4 methods of horizontal gene transfer, which one do you find the most interesting? Explain your choice

7. The DNA in most of your cells is 6 feet long. If your DNA is so long, why isn't it sticking out of your body?

8. If eukaryotes are really just archaea with bacteria inside of them, how many domains of life are there? Explain your answer

9. A gram-positive bacterium, Bacillus anthracis, causes the disease anthrax. Given it's genus (the first part of its name), what shape do you think this organism's cells have?

10. How do bacteria undergo horizontal gene transfer. How do bacteria undergo vertical gene transfer?

11. Which group(s) can contain multicellular organisms, eukaryotes and/or prokaryotes?

12.What is an operon and where is it commonly found?

13. What is at the base of an evolutionary tree?

Challenge Question

14. How and why was rRNA used to construct the first molecular evolutionary tree?

15. In prokaryotes, an mRNA molecule can be transcribed and translated at the same time. Why do you think this would be advantageous to prokaryotes?