Which of the following bacteria requires heme for its growth?

A. Salmonella
B. Shigella
C. Yersinia
D. Haemophilus
E. Bordetella


Answer: D

Biology & Microbiology

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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)

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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

Biology & Microbiology

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..

Biology & Microbiology

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

Biology & Microbiology