Schoolcraft College

1) A disease that is present in unusually high numbers throughout the world is called a(n) A) endemic. B) epidemic. C) sporadic. D) pandemic. 2) A ________ is a disease that primarily infects animals but can be transmitted to humans. A) nosocomial infection B) zoonosis C) vector infection D) mudurane 3) An inanimate object that transmits infectious agents between hosts is most appropriately called a A) fomite. B) carrier. C) vector. D) reservoir. 4) Which of the following ...

Two organisms that both benefit from each other are in a symbiotic relationship called A) ammensalism. B) commensalism. C) mutualism. D) parasitism. 2) The insect symbiont Wolbachia can be used to suppress disease transmission by mosquitoes because A) Wolbachia supplies essential nutrients to the mosquito Culex quinquefasciatus. B) only Wolbachia-infected mosquitoes can transmit viral diseases such as dengue fever. C) Wolbachia infections can spread rapidly through a mosquito popula...

Laboratories that work with moderate risk pathogens are classified as A) BSL-1. B) BSL-2. C) BSL-3. D) BSL-4. 2) Bacteremia is a term used A) to indicate the presence of bacteria in the blood. B) synonymously with septicemia. C) when the same organism is isolated from more than one site. D) to indicate the presence of bacteria in the lungs. 3) Which of the following must be accomplished FIRST in order to conduct RT-PCR? A) Complementary DNA must be synthesized from double-strande...

The primary function of a phagocyte is to A) destroy pathogens. B) engulf pathogens. C) evade pathogens. D) both engulf and destroy pathogens. 2) Which of the following are NOT phagocytes? A) dendritic cells B) monocytes C) neutrophils D) erythrocytes 3) Which of the following is a function of dendritic cells? A) antigen presentation B) plaque formation C) phagocytosis D) both phagocytosis and plaque formation 4) Phagocytes have a pathogen-recognition system known as _______...

Pathogenicity is the ability A) of the host to inflict damage on the pathogen. B) of the host to resist damage by the pathogen. C) of the pathogen to inflict damage on the host. D) None of these are correct. 2) Which of the following is NOT a subunit of lipopolysaccharide (LPS)? A) O-specific polysaccharide B) lipid A C) core polysaccharide D) M protein 3) One microenvironment of the skin is an area where glands produce an oily substance called A) mucus. B) sebum. C) fimbrae. D...

) The metabolic diversity of photosynthetic bacteria stems from different A) bacteriochlorophylls and pigments they contain. B) chlorophylls they can have and organic compounds they can produce. C) light-harvesting complexes, electron donors, and organic compounds they produce. D) unrelated taxa capable of photosynthesis. 2) Whether an organism is classified as a photoheterotroph or a photoautotroph depends on its A) energy source. B) carbon source. C) oxygen requirements. D) carbon a...