What is an exception to the standard biological species concept used to define a species?
A. Natural interbreeding populations cannot be distinguished using this concept.
B. Asexual species cannot be distinguished using this concept.
C. Species that coevolved cannot be distinguished using this concept.
D. Species that do not resemble one another cannot be distinguished using this concept.
Answer: B
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In Gram-stained preparations, M. atlantae will appear as:
a. either gram-negative coccobacilli or short, broad rods that tend to resist decoloriza-tion and may appear gram-variable. b. gram-negative cocci in pairs or short chains. c. coccobacilli or medium-sized rods. d. coccobacilli that may appear in chains.
Of the following species of mycobacterium, which causes a chronic disease of the skin, mucous membranes, and nerve tissue and has not yet been cultivated in vitro?
A. Mycobacterium paratuberculosis B. Mycobacterium lepraemurium C. Mycobacterium phlei D. Mycobacterium leprae
Which of the following is false about the tropical disease African sleeping sickness?
A) It is carried by a blood-sucking mosquito from host to host. B) It induces an immune system reaction so strong that host neutrophils can harm host neurons. C) If the disease goes untreated, it is fatal. D) Those infected cannot sleep at night and cannot stay awake during the day. E) It is caused by the flagellated protozoan Trypanosoma brucei.
Give an example of a coenzyme
What will be an ideal response?