Which of the following bacteria requires heme for its growth?
A. Salmonella
B. Shigella
C. Yersinia
D. Haemophilus
E. Bordetella
Answer: D
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Which therapy has decreased the incident of pneumocystis infection in patients with human immunodeficiency virus or acquired immunodeficiency syndrome (HIV/AIDS)?
a. Metronidazole b. Trimethoprim-sulfamethoxazole combi-nation c. Aminoglycosides with fluconazole d. Highly active antiretroviral therapy (HAART)
Red light and phytochrome are involved in which of the following plant growth responses? Check all that apply.
_____ thigmotropic responses _____ inhibition of seed germination _____ elongation of etiolated shoots _____ detection of crowding by neighboring plants
All living organisms
a. belong to one of three domains. b. belong to the same kingdom. c. belong to the domain Eukarya. d. are composed of the same type of cell..
In a mature plant cell, ____ may occupy more than 90% of the cell's volume
a. the nucleus b. chromoplasts c. rough endoplasmic reticulum d. the central vacuole e. chloroplasts