Viruses and Bacteria Review

VirusesBacteriaMore Challenging Virus Qs More Challenging Bacteria Qs

100 Which is smallest in size: a virus, a bacteria, a plant cell or an animal cell? Virus

200 The genome of a virus may be A).single stranded DNA B).double stranded DNA C).single stranded RNA D).double stranded RNA E).All of the Above E.

300 Which of the following characteristics is (are) found in all viruses? A).a nuclear membrane B).a cell wall C).a capsid D).membrane-bound organelles E).ribosomes C.

400 Which of the following molecules makes up the viral envelope? a). Carbopeptides b). Proteosugars c). Glycoproteins d). Peptidocarbs e). carboproteins C

500 Why are viruses referred to as obligate parasites? A). They can incorporate nucleic acids from other viruses. B).They cannot reproduce outside of a host cell. C).Viral DNA always inserts itself into a host DNA. D).They invariably kill any cell they infect. E). E).They must use enzymes encoded by the virus itself. B.

100 What kingdom does bacteria fall under? Monera

200 Cocci, Bacilli, and spirilla are what kind of shapes of bacteria? Rod shaped, round, and helical.

300 What is the name of the carbohydrate that is found in bacteria cell walls and helps us classify bacteria? Peptidoglycan

400 By the color, you can classify some bacteria. What type of bacteria is shown in the picture below? Gram Negative

500 Penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin? a)Mycoplasmas b)Gram positive bacteria c)Archaea d)Gram negative bacteria e)Endospore bearing bacteria B.

100 What is the name given to viruses that are single-stranded RNA that acts as a template for DNA synthesis? A).retroviruses B).proviruses C).viroids D).bacteriophages E).lytic phages A.

200 Which of the following destroys the host cell during replication of viruses? A).reverse transcriptase B).prophage C).lysogenic cycle D).lytic cycle E).viroids D.

300 Which of the following information transfers is catalyzed by reverse transcriptase? A).RNA  RNA B).DNA  RNA C).RNA  DNA D).Protein  DNA E).RNA  Protein C.

400 Most human-infecting viruses are maintained in the human population only. However, a zoonosis is a disease that is transmitted from other vertebrates to humans, at least sporadically, without requiring viral infection. Which of the following is the best example of a zoonosis? A).herbes virus B).rabies C).smallpox D).HIV E).hepatitis virus B.

500 Put the steps of Viral Infection in order. A)Transription B) Translation C) Incorporation of the virus into the cell D) New viruses exit cell E) Assembly of viral components F) Copying viral genome C, F, A, B, E, D

100 Not present in all bacteria, this structure enables those that possess it to germinate after exposure to harsh conditions, such as boiling. A). Endospore B). Sex Pilus C). Flagellum D). Cell wall E). Capsule A.

200 Which of the following statements about prokaryotes is correct? A). Bacterial cells conjugate to mutually exchange genetic material. B). Their genetic material is confined within a nuclear envelope. C). They divide by binary fission, without mitosis or meiosis. D). The persistence of bacteria throughout evolutionary time is due to their genetic homogeneity. E). Genetic variation in bacteria is not known to occur, nor should it occur, because of their asexual mode of reproduction. C.

300 What are the three modes of motility for bacteria? Flagella, Helical Filaments and Slime

400 What are two ways that bacteria can help us and the environment. Clean oil spills Make antibiotics

500 For each numbered phrase or sentence, select the one heading that is most closely related to it. A) Conjugation B) Transduction C) Transformation D) Plasmid 1) The transfer of genes between two E. coli joined by a sex pilus 2) A section of bacterial DNA is packaged in a virus and transferred to a new host cell 3) Small rings of bacterial DNA that carry accessory genes 4) A bacteria takes up segments of naked DNA 1. A 2. B 3. D 4. C