35. Shigella dysenteriae is one of the most highly infectious pathogens What does ths indicate
about the organism? a) Infection is possible after exposure through a wide range of possible
direct or indirect routes, including routes that create chances for exposure during normal
everyday activiti...
35. Shigella dysenteriae is one of the most highly infectious pathogens What does ths indicate
about the organism? a) Infection is possible after exposure through a wide range of possible
direct or indirect routes, including routes that create chances for exposure during normal
everyday activities failure or death b) The symptoms of an infection by S dysenteriae are severe,
possibly including organ c) Infection is likely after exposure to a very smal number of microbes
d) Infection with S dysenterioe is very likely to lead to disease survives and reproduces in the
intestines. These living microbes also create and release a toxin called Shiga toxin. Toxins like
this are called a) Endotoxins b) Anti-toxins c) Toxoids d) Exotoxins 37. Shiga toxin attacks
ribosomes in host cells, interfering with protein synthesis and killing the cell Your friend bacteria
need to proposes that this toxin might make an good drug for treating bacterial infections, since
synthesize many proteins in order to survive and grow, but you disagree Which reasons why the
Shiga toxin would make a poor antibiotic a) The Shiga toxin is relatively unlikely to be effective
against bacteria, because their translational machinery of the following are valid for human use?
is evolutionarily distinct from eukaryotes\' b) The Shiga toxin is harmful to humans, so it would
be difficult to use it for treatment c) The Shiga toxin would probably be a useful medicine for
humans, d) Aand B, but not C e) A, B, and C but it is so difficult to produce and collect
compounds produced by bacteria that this is not a viable method for creating a drug 38. Strains
of S dysenteriae that are resistant to multiple antibiotics are becoming more common. For this
reason, bacterial dysentery unless absolutely necessary some people argue that we should not use
antibiotics to treat Is this a good strategy? a) Yes, because antiblotic treatment causes host cells
to become resistant to the drug b) No, because antibiotics don\'t change whether a microbe is
drug resistant or not, so using antibiotics doesn\'t increase resistance c) Yes, because if
antibiotics are not used then drug resistant do not have an advantage over non-resistant microbes,
and are less likely to spread. No, because highly infectious diseases like bacterial dysentery have
extremely severe symptoms, so it is dangerous not to use antibiotics as early as possible. d)
general types of tumors:which are tumors that can grow but do not spread to which invade
nearby healthy tissue and spread throughout the body new tissue, and a) benign tumors/warts b)
malignant tumors/benign tumors c) benign tumors / malignant tumors d) cancers/malignant
tumors Genes encoding proteins that can slow or stop cell division if the dividing cell is
unhealthy are called: a) Tumor suppressor genes b) Cancer protection genes c) Oncogenes d)
Carcinogenes 40. Page 7
Solution
35. Option A is correct.
Shigella is highly successful pathogen as it can get infected through multiple ways.
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