John Snow's research during a cholera outbreak in London laid the foundation for which of the following branches of microbiology?
A. infection control only
B. epidemiology only
C. immunology only
D. both infection control and epidemiology
E. infection control, epidemiology, and immunology
Answer: D
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Which of the following ideas is not part of Darwin's concept of evolution?
a. A population is capable of producing more offspring than the environment can support. b. Individuals that are best adapted to their environment are more likely to survive and reproduce. c. A struggle for existence exists among individuals of a population. d. Traits acquired during an individual's life are passed on to its offspring. e. Individuals in a population are genetically variable.
In an ecosystem, which measure of energy is the largest in amount or rate?
a. net primary productivity b. gross primary productivity c. plant respiration d. animal respiration e. plant and animal respiration combined
Which cells of the pancreas produce glucagon?
a. alpha cells b. beta cells c. delta cells d. F cells e. gamma cells
The function of the rugae of the stomach is to:
a. secrete amylase. b. crush the food. c. increase the holding capacity of the stomach. d. mix the food with gastric juices. e. increase the surface area for secretion.