QUESTION 5 A viral infection is likely to only infect specific tissues of the body. This is what is known as a.Lytic cycle b.Lysogenic cycle c.Host range d.Spike proteins e.Latent infection QUESTION 6 A patient in your care has developed a Clostridium infection in their chest following a stabbing. Clostridium species are strict anaerobes. In addition to antibiotics, the physicians have ordered the patient to be placed in an isolated hyperbaric chamber. In hyperbaric chambers, the pressure of gasses from the atmosphere are much higher than in normal surroundings. The underlying principle here is that a.High temperatures can kill bacteria b.Additional pressure kills bacteria when coupled with antibiotics c.Oxygen is toxic to some organisms d.Isolation is key with Clostridium infections.
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5. One important way to control the spread of viruses is through (circle all that apply) a. the use of vaccines. b. proper hand washing. c. the use of other types of bacteria. d. the use of antibiotics. 6. One of the differences between bacteria and viruses is that: a. viruses are living and bacteria are non-living b. bacteria are living and viruses are non-living c. viruses are biotic and bacteria are abiotic d. viruses are prokaryotic and bacteria are eukaryotic 7. Why are viruses not considered living organisms? a. Viruses can only be seen with an electron microscope. b. Viruses cannot make their own nutrients. c. Viruses do not contain genetic material. d. Viruses are not made up of cells. 8. Which of these is characteristic of both viruses and bacteria? a. They get their energy from their environment. b. They can reproduce on their own. c. They can form crystals and become dormant. d. They contain proteins and nucleic acids. 9. Which of these must infect a living host to reproduce? a. bacteria b. viruses 10. When provided the proper nutrients, which of these can grow and reproduce on their own without a living host? a. bacteria b. viruses
Sri K.
1a) All of the following are true of Hospital-acquired infections EXCEPT: Group of answer choices E. coli and staphylococci are common etiological agents of HAI's. HAI's can involve endogenous infections from the patient's resident biota HAI's often involve catheters as portals of entry HAI's can always be prevented by medical personnel B) Koch's postulates require all of the following except: Group of answer choices The microbe must be streaked on a plate and grown in the lab. If a person is sick, the microbe must be found in them. The infected host must be able to successfully transmit the microbes to a new host. The microbe must cause the same disease when given to uninfected hosts.
Adi S.
One way to fight viral infections is to prevent a virus from replicating its DNA. Without DNA replication, the virus cannot multiply. Some viral drug therapies cause the introduction of fake nucleotides into cells. When the virus uses one of these fake nucleotides in an attempt to replicate its DNA, the fake nucleotide doesn't work and viral DNA replication is halted. For example, azidothymidine (AZT), a drug used to fight the human immunodeficiency virus (HIV) that causes AIDS, results in the introduction of the following fake thymine-containing nucleotide into cells. Examine the structures of the real nucleotide and the AZT fake nucleotide. Propose a mechanism for how this fake nucleotide might halt DNA replication.
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