t Essays. Answer in 5-7 COMPLETE sentences. ripti 3, An addition to viruses ther
ID: 212031 • Letter: T
Question
t Essays. Answer in 5-7 COMPLETE sentences. ripti 3, An addition to viruses there are other molecules that can infect and take over cells. These include viroids and prions. a. What are viroids made of? What are Prions made of? b. Chose ONE of these and discuss how it infects cells and causes disease. 4. Imagine NASA sends you a rock specimen from a planet that they believe contains an extraterrestrial bacterial species. You are the microbiologist in charge of determining how to grow the extraterrestrial bacteria. Many factors may affect the growth of extraterrestrial bacteria. Choose two factors. Why would these factors be important in growing this specific type of bacteria? b. a. Describe how you would test the effects of these factors on the bacteria (in detail). RNA plays several important roles in the processes that express genetic information from DNA into role. Also indicate what role RNA plays in translation in bacterial cells (mRNA, rRNA and tRNA). 5. protein products. Illustrate the events of transcription in a bacterial cell and indicate where RNA plays a 6. Viruses can be categorized based on THREE different characteristics Name these THREE characteristics. a. b. How would you test these characteristics (what tests/experiments could you use)? Bacteria can pass on genetic information by transduction, transformation and conjugation. a. What does competency' mean? b. What is the difference between F plasmid and F' plasmid? c. What is the difference between general transduction and specialized transduction? re are many differences between viruses that infect eukaryotes and viruses that infect prokaryotes especially in how they enter and infect a host cell. a. Give FIVE differences between these two viral types. b. How do you think viruses evolved? te a dichotomous key to positively identify the following objects: a. Red cabbage b. Green lettuce c. Green grapes d. Red grapes e. Red apples f. Green apples g. Pumpkirn h. FishExplanation / Answer
Question 3 answered
Viroids, also the smallest infectious agents are just small single-stranded RNA molecules. Unlike a virus, they do not have a protein coat. They generally infect higher plants. Prions are infections proteinaceous particles.
Viroids do not produce any protein. Rather they use host's RNA polymerase to create their copies. Evidence suggests that these mainly cause symptoms by silencing host genes induced by complementary base pairing (A goes with T and G goes with C)
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