Which of the following diseases are you NOT likely to get from an arthropod vector?
a. none of the answers are correct (all of the organisms come from arthropods)
b. Lyme disease
c. schistosomiasis
d. malaria
e. plague
Answer: c. schistosomiasis
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Which of the following statements about digestion is true?
A. Digestion can be both mechanical and chemical, and it occurs both in the mouth and in the stomach. B. Mechanical digestion occurs only in the stomach; chemical digestion occurs only in the mouth. C. Digestion is the same thing as ingestion. D. Digestion occurs only in the stomach.
The main route of transmission of the poliovirus is ________.
A. body contact B. respiratory secretions C. food and water D. fomites
What characteristic does Vibrio share with Salmonella?
A) Both have O polysaccharide antigens. B) Both are oxidase positive. C) Both have polar flagella. D) Both have similar shape. E) Both are spread primarily by fecal contamination.
Methyl alcohol, also known as wood alcohol, is a common solvent and paint remover. It is poisonous if accidentally swallowed. The enzyme alcohol dehydrogenase in the liver converts methyl alcohol into formaldehyde, which then gets converted into a toxic
product. Grain alcohol, ethyl alcohol, is also acted upon by alcohol dehydrogenase. One antidote for methyl alcohol poisoning is to make a person drink a lot of ethyl alcohol. This blocks the active site of the enzyme so that it can't bind to and break down the methyl alcohol. In this capacity, the ethyl alcohol is acting as a/an: A) competitive inhibtor. B) precursor. C) coenzyme. D) allosteric regulator.