Approximately three hours after consuming contaminated ham, a person experiences food poisoning symptoms that subside after two days. What is the most likely cause?
a. Clostridium botulinum
b. Clostridium perfringens
c. Salmonella enterica
d. Staphylococcus aureus
Answer: D
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What growth conditions would you use to enrich for ammonia-oxidizing bacteria?
A) aerobic mineral media with ammonia and bicarbonate incubated in the dark B) anaerobic mineral media with acetate and ammonia incubated in the dark C) aerobic mineral media with acetate and ammonia, incubated in the dark D) anaerobic mineral media with ammonia and nitrate incubated in the dark
If you were unable to produce tears:a
you would be more vulnerable to infections by gram negative bacteria. b. you would not produce lysozyme. c. your level of defensins would be decreased. d. you would lose a first line of defense against bacteria. e. you would not produce lysozyme, and you would be more vulnerable to infections by gram-positive bacteria
During which of the following processes is ATP NOT produced?
A) Cellular respiration by itself B) Fermentation by itself C) Glycolysis by itself
Four of the following are advantages that led to an evolutionary shift toward bipedalism. Which one is the exception?
A. It allows for more efficient movement across open ground. B. It made upright walking more energy efficient. C. It keeps the body cooler. D. It allows for better stereoscopic vision. E. It is easier to scan the horizon for predators.