BIOL133 K006 MITOSIS PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+RECENT VERSION

BIOL133 K006 MITOSIS PRACTICE EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS | ALREADY GRADED A+RECENT VERSION 1) "Wow, these virus capsids are beautiful and amazing!" says your study partner. "This one is like some kind of 1960's geodesic dome, and that one looks like the moon lander. How does a little virus construct these complicated structures?" A. The shapes arise directly from the shape of the viral DNA or RNA when it is folded up. B. The capsomere proteins bind each other in specific ways, allowing them to self-assemble. C. The host cell has a special organelle that assembles them - this gets the viruses out quicker so the cell can recover. C. The capsids are formed from mitochondria or chloroplasts hijacked from the host. - ANSWER B. The capsomere proteins bind each other in specific ways, allowing them to self-assemble. 2) In what way are viroids like viruses? A. They can have capsids and outer envelopes. B. They can have either RNA or DNA. C. They reproduce only within a host cell. D. They do not manufacture any proteins. - ANSWER C. They reproduce only within a host cell. 3) Some viruses cause cancer - even decades after the initial infection. True False - ANSWER True 4) What is the similarity between a virus and a eukaryotic cell? A. both have a genome B. both have a nucleus C. both have mitochondria D. both have a nuclear membrane - ANSWER A. both have a genome 5) Which viral structure can be seen by a transmission electron microscope? A. head B. capsid C. genome D. capsomere - ANSWER B. capsid 6) Which virus is sensitive to changes in temperature? A. HIV B. Poliovirus C. Hepatitis A virus D. Papillomavirus - ANSWER A. HIV 7) HIV attaches to a person's T lymphocytes to begin multiplying. After HIV attachment to the T lymphocytes, the patient's T lymphocyte immune response decreases. What could be the reason for this? A. The CD98 marker on T lymphocytes is utilized by HIV for attachment and penetration. B. The CD4 marker on T lymphocytes is utilized by HIV for attachment and penetration. C. The CD8 marker on T lymphocytes is utilized by HIV for attachment and penetration. D. The CD20 marker on T lymphocytes is utilized by HIV for attachment and penetration. - ANSWER B. The CD4 marker on T lymphocytes is utilized by HIV for attachment and penetration. 8) Which of the following virus morphologies would be the least likely to infect plant or bacterial cells, both of which contain cell walls? A. Filamentous viruses B. Isometric or icosahedral viruses C. Enveloped viruses D. Head and tail viruses - ANSWER C. Enveloped viruses 9) Which statement explains why early scientists called viruses "filterable" infectious agents? A. Tobacco mosaic disease could be transferred from a diseased plant to a healthy one via liquid plant extracts. B. The Chamberland-Pasteur filter could remove all viruses visible under a microscope from any liquid sample. C. Liquid extracts passed through the Chamberland-Pasteur filter could still transmit disease. D. Viable bacteria were required to transmit tobacco mosaic disease. - ANSWER C. Liquid extracts passed through the Chamberland-Pasteur filter could still transmit disease. 10) You are classifying a novel virus and have the first glance at its sequenced genome. After using a database to identify similar proteins, you discover that it has several protein-coding genes including reverse transcriptase. What kind of virus is it? A. a dsDNA virus like adenovirus B. a ssDNA virus like parvovirus C. a retrovirus like HIV D. a segmented DNA virus like polydnavirus - ANSWER C. a retrovirus like HIV 11) What allows bacteria to be able to perform bioremediation such as eating oil and detoxifying mercury? A. excessive growth to overwhelm contaminant B. fermentation processes C. presence of specific enzymes D. formation of biofilms (Hint: Learning Objective: Describe the use of prokaryotes in bioremediation) - ANSWER C. presence of specific enzymes 12) What process is typically associated with human food made with microbes? A. nitrification B. glycogenolysis C. photosynthesis D. respiration E. fermentation (Hint: Identify foods in which prokaryotes are used in the processing) - ANSWER E. fermentation 13) Which of the following statements is NOT true about the bubonic plague? A. caused Black Death in 1300s that killed off over 75 million people B. susceptible to common antibiotics C. viral disease that no longer infects people D. caused a number of different plagues in Europe over the last 2,000 years E. carried by fleas on rats - ANSWER C. viral disease that no longer infects people 14) Deinococcus radiodurans is an unusual extremophile in that it can routinely reconstruct its chromosome after it has been broken into hundreds of pieces usually by exposure to heat or A. earthquakes B. deep ocean pressures C. UV light D. radiation E. high frequency radio waves - ANSWER D. radiation