A sample of fluid from the lungs contains microbes that grow in filaments or clumps. The cells stain poorly in the Gram stain and are a pink-red when acid-fast stained. The bacteria in the sample are
A) Mycobacterium species.
B) Mycoplasma species.
C) Nocardia species.
D) Actinomyces species.
E) not identifiable with this information.
A
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Upon a second exposure to a pathogen, the ____ immune system responds ____ than it did upon the first exposure
a. innate; slower b. adaptive; slower c. innate; faster d. adaptive; faster e. innate; more powerfully
The C4 cycle
a. replaces the carbon fixation stage of the Calvin cycle. b. supplements the activity of rubisco by providing a second source of 3PGA for the reduction stage of the Calvin cycle. c. is more efficient than the Calvin cycle because less ATP is consumed in the process. d. ensures that CO2 is provided to rubisco and thus prevents photorespiration. e. is most commonly associated with plants living in humid climates.
Turner syndrome is an example of a __________ condition
a. monosomic b. disomic c. trisomic d. polyploid e. fragile site
Which one of the following is mismatched?
a. bread mold?zygomycetes b. Allomyces–chytridiomycetes c. mushrooms–basidiomycetes d. sac fungi?ascomycetes e. Dutch elm disease–glomeromycetes