Which of the following organisms is responsible for "sick building syndrome?"
A. Stachybotrys chartarum
B. Claviceps purpurea
C. Amanita phalloides
D. Aspergillus nidulans
Answer: A
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Which of the following can be used to estimate the number of microorganisms in a culture?
A. Measurements of microbial biomass B. Direct counts of microbial cells C. Counts of viable cells using colony growth procedures D. All of the choices are correct.
With respect to the enzyme that converts X to Y, substance A functions as _____
A) a coenzyme B) an allosteric inhibitor C) the substrate D) an intermediate E) a competitive inhibitor
The atomic number is the number of
a. neutrons and protons. b. neutrons and electrons. c. protons and electrons. d. protons only. e. neutrons only.
All of the following are evolutionary trends in the development of nervous systems for bilaterally
symmetrical animals except:a. an increased number of neurons. b. concentration of neurons. c. specialization of function. d. simplistic synaptic contacts allowing integration. e. cephalization.