Which of the following statements regarding Neisseria meningitidis is FALSE?
A. There are vaccines available to prevent infection with all strains.
B. Up to 40% of the population are carriers.
C. Humans are the only natural carriers.
D. Transmission is via respiratory droplets.
E. It often causes meningitis.
Answer: A
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What is a cloaca?
a. a body opening that serves solely as the exit for wastes from a digestive tract b. a multi-chambered stomach c. a saclike gut that also functions in gas exchange d. a chamber lined with hard protein particles for breaking up tough foods e. a multipurpose body opening that serves as an exit for digestive and urinary tract and also functions in reproduction
Dr. Ratard was trying to determine the cause of a mysterious epidemic affecting fish in the gulf of New Mexico. His proposal that the deaths were caused by an organism called a protist is considered a(n) ________
A. conclusion. B. hypothesis. C. theory. D. experiment. E. data set.
Daniel Janzen of the University of Pennsylvania has emphasized which of the following processes in his explanation of high species richness in tropical systems?
A) herbivory B) mutualism C) allelopathy D) intraspecific competition
In the event that you are collecting data on how heights relate to income in the U.S. population and you notice that in your sample of 1,500 individuals you have a data gap at 5'6", will this cause an identification problem?
A. No, because data gaps cannot cause identification problems. B. Yes, but you can still extrapolate the data gap. C. No, because this data gap does not exist in the population. D. Yes, but you can still interpolate the data gap.