The intracellular parasite Anaplasma phagocytophilium infects
A. endothelial cells.
B. red blood cells.
C. monocytes.
D. neutrophils.
E. epithelial cells.
Answer: D
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V. cholerae and Photobacterium damsela are used to perform quality control on TCBS agar. After overnight incubation, no growth is observed. What is the next course of action?
a. Reinoculate the TCBS agar, and incubate for 36 hours. b. Check the pH to ensure that it is 8.6. c. Reincubate the plates for another 24 hours. d. These two organisms are poor choices for quality control on TCBS agar.
The incubation period of rabies is partially determined by
A. age of the patient. B. season of the year that the disease is acquired. C. length of journey from the bite site to the brain. D. the amount of virus introduced into the wound. E. length of journey from the bite site to the brain AND the amount of virus introduced into the wound.
An individual plant that possesses both male and female reproductive organs is known as
A) imperfect. B) dioecious. C) perfect. D) asexual.
Secondary xylem contains all of the following cell types except:a
tracheids. b. vessel elements. c. sieve tube elements d. fibers. e. parenchyma