Some American soldiers serving in Iraq have become infected with a skin disease caused by a protist called Leishmania, which is transmitted by sand flies. The Leishmania organism bears flagella with a unique crystalline rod structure. One of its life stages is squiggly and worm-like in appearance, much like its relative in the same group, Trypanosoma. Leishmania belongs to the group __________.
Fill in the blank(s) with the appropriate word(s).
Answer: excavata
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In the ABC model of floral development, flower development in Arabidopsis is regulated by _____ activities controlled by ____ genes
A. 3; 3 B. 3; 4 C. 4; 3 D. 4; 4 E. 3; 5
If a clinical laboratory receives a "blind unknown" for proficiency testing (PT), it is most likely sent by which private accrediting agency?
a. CLSI b. National Accrediting Agency for Clinical Laboratory Sciences (NAACLS) c. College of American Pathologists (CAP) d. American Society of Consultant Phar-macists (ASCP)
The best light to grow the alga in is ____,
according to the figure. a. blue-violet b. blue-green c. green-yellow d. yellow-orange e. orange-red
In a certain ecosystem, caterpillars eat grass. Field mice eat the caterpillars and seeds from the grass. Snakes eat the mice. Hawks eat both the snakes and mice. Such an arrangement would be considered a(n)
Select one: a. food web. b. food chain. c. ecosystem. d. first trophic level. e. second trophic level.