Which of the following is correct about aflatoxin? O 1) it is added to some ice creams and salad dressings as a thickener. 2) It is a poison made by certain molds that can grow on corn. 3) It is added to fruit juices as a color enhancer. 4) It is found in the green substance that accumulates beneath the skin of a potato.

Which one of the following categories for antibacterial agents is most likely to have toxic side effects for humans? a) disruptors of cell membrane structure b) inhibitors of cell wall synthesis Oc) inhibitors of protein synthesis d) antimetabolites RESET e) inhibitors of DNA synthesis Cancel Done

1) Which of the following apply(ies) to Bacillus cereus and Bacillus anthracis? Choose all that apply: a) B. anthracis forms spores while B. cereus does not b) B. cereus is more lethal when it causes an infection c) B. anthracis has extra-chromosomal DNA that makes it more pathogenic d) Despite their similar names, the two are actually not at all related e) The 16S rRNA gene sequences of these bacteria are more than 99% identical, meaning that they are actually members of the same species

Which of the following diseases is NOT controlled by a mosquito control program? Group of answer choices A) Yellow fever B) Dengue fever C) Leprosy D) Malaria

Spongiform encephalopathies are 1) caused by prions. 2) chronic, fatal infections of the nervous system. Creutzfeld-Jacob disease, kuru, and Gertsmann-Strussler-Scheinker O3) syndrome. 4) associated with abnormal, transmissible, protein in the brain. 5) All of the choices are correct.

25) The black 'hairy tongue' side effect of amoxicillin is an example of ________________.    A) Anaphylaxis B) Opportunistic Infection C) Allergy D) Poor Oral Hygeine

Which of these statements concerning Creutzfeldt-Jakob disease(CJD) and vCJD is true?a) CJD occurs in children; vCJD occurs in adults over 45.b) CJD and vCJD are fatal in under 50% of cases.c) CJD is caused by prions; vCJD is a viral infection.d) Only humans suffer from diseases like CJD and vCJD.e) Both CJD and vCJD produce a spongy appearance in affected brain tissue.

An antiviral drug that is a guianine analog would have an antiviral mode of action that: a) blocks penetration  b) blocks DNA replication  c) inhibits peptidoglycan cross linking d) blocks maturation e) bonds to ergosterol in the cell membrane

Staphylococcus aureus can be responsible for all of the following conditions excepta) impetigo.                          b) food poisoning.c) toxic shock syndrome.      d) scalded skin syndrome.e) athlete’s foot.

65. The effectiveness of metronidazole, useful in treating active amebic infection, is dependent on which of the following? CA) Activation of the drug by inflammatory mediators OB) Anaerobic reduction of the drug to its active form by the parasite C) Presence of a parasite-specific DNA topoisomerase CD) Selective depletion of intracellular folate stores