Why are \"magic bullets\" for viruses for viruses more difficult to find than fo

Question

Why are "magic bullets" for viruses for viruses more difficult to find than for bacterial infections? A. Viruses lack peptidoglycan so there is no target for a magic bullet B. Viruses are nonliving there cannot be killed or destroyed by magic bullets C. Viruses do not respond to antibiotics and most magic bullets are antibiotics E. Viruses infect cell in greater numbers than bacteria and can outgrow most bullets Selenvibrio is growing on minimal without arginine. When arginine is added to a culture growing exponentially. What would occur? A. All cellular growth would cease. B. Growth but the production of enzymes required for the synthesis of arginine ceases. C. The cell returns to the lag stage of growth to synthesize the proteins necessary for the metabolism of arginine. What is the mechanism of protease inhibitors in the treatment of HIVIAIDS? A. Inhibit reverse transcriptase B. Prevent viral assembly C. Destroy infected T cells D Block integration of HIV into host DNA E. Stop the attachment of the virus to host cell receptors RNA dependent RNA polymerase is used by which of the following viruses for replication? A Sense(+) RNA viruses B> Antisense (-) RNA viruses C, Both of these D. Neither of these A scientist studying microbes that have that have pseudomurein and cannula. He is working with which organisms? A. Proteobacteria B. Viruses C. archaea D mollicutes E. high C+C bacteria Which organism is most different than the others? A. sulfolobus B. Halobacterium C. Methanococcus D. Pyrolobus E. Deinococcus A genetic engineer wishes to insert a bacterial gene into a tomato plant. Which organism should be used as a vector? A. Thermus B. Agrobacterium C. Thiobacilus E. Rhizobium You lead a research team with the task of creating a regulatory protein able to shut off transcription. Your design is focused around an operator that is associated with the promoter. The physical location of the operator most likely to affect transcription would be A. Upstream of the gene promoter B. Downstream of the gene promoter C. Internal to the gene itself D. Internal to the gene promoter E. On a ribosomal subunit The most widely used molecules in sequence-based evolutionary analyses are the... genes. A. ATPase B. transport A ATPase Which of the following is NOT true of B cells? A. They are granulocytic leukocytes B. They produce immunoglobulin C. They originate as stem cells in bone marrow D. They are involved in humoral immunity E. Some serve as memory cells Which is a TRUE statement regarding vaccination? A. Some vaccines destroy directly. B. An anamnestic response is produced by the host immediately following vaccination. C. Vaccines stimulate an initial immune response that produces memory cells D. Vaccines stimulate memory cells to become plasma cells. E. Serum antibody titer is generally higher from vaccination than from disease recovery. Where do B lymphocytes become mature cells? A. Thyroid B. Bone marrow C. Bloodstream D. Tonsils E. Spleen Microbial evolution is the result of A. Exposing pigmented microbes to light B. Random mutations and environmental selection C) Mutagenesis using toxic chemic D). Formation of dormant life stages

Explanation / Answer

64. A & E

65. B

66 B

67.A

68.A (Prolactobacteria)

69.D (pyrolubus)

70. Rizobium

71.. A upstream of the gene promoter

72.16 s rRNA

73.A

74. C . Vaccine stimulate an initial immuno response that produces memory cells

75, B (random mutaion and environmental selection

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