Which of the following bacteria is the most common cause of antibiotic-associated diarrhea?
A) Clostridium difficile
B) Escherichia coli
C) Salmonella enteritidis
D) Shigella sonnei
A) Clostridium difficile
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Using the great lubber grasshopper as a model, Walter Sutton observed:
A. separation of maternal and paternal chromosomes during mitosis. B. replication of chromosomes during meiosis. C. crossing over of homologous chromosomes. D. pairing of homologous chromosomes during mitosis. E. pairing of homologous chromosomes during meiosis.
The membrane potential of a neuron is defined
as the
a. measured capacity of a neuron to create an electrical impulse. b. voltage in the neuron plasma membrane. c. threshold potential of a neuron. d. the electric gradient across a neuron’s plasma membrane. e. amount of voltage it takes to stimulate a neuron to fire.
Asexual reproduction
A) requires the genetic contributions of two individuals. B) requires two types of sex cells. C) results in offspring that are clones of the parent. D) results in fertilization.
Where is the pancreas located?
a. between the liver and the small intestine b. between the stomach and the small intestine c. between the stomach and the liver d. between the gallbladder and the liver