The epithelial cells lining the intestine have surface projections that increase the area for absorption. These projections are called ________
A) villi
B) mucus
C) microvilli
D) bile
C
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The PARA-TECT Cryptosporidium/Giardia test kit uses which of the following formats for detection?
a. Direct fluorescent antibody (DFA) b. Indirect fluorescent antibody (IFA) c. Enzyme immunoassay (EIA) d. Probe
The process of denitrification involves the transformation of ________.
A. ammonia to organic matter nitrogen B. ammonia to nitrate C. nitrogen gas to ammonia D. nitrate to nitrogen gas
The most fundamental grouping in the classification of living organisms is the _____
a. class b. genus c. family d. order e. species
Why is the analysis of transcriptomes useful for genetics research?
A) It can reveal many aspects of gene regulation. B) It is easy to do without computer programs. C) It can help discover nontranscribed DNA regions. D) It directly identifies transcription factor binding sites.