Aquatic invertebrates excrete , a very toxic waste product, directly into the water.
A. urea
B. nucleotides
C. uric acid
D. ammonia
E. allatonin
D. ammonia
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Fatty acid analysis
A. can be used to identify Gram-negative bacteria. B. can be used to identify Gram-positive bacteria. C. uses gas chromatography to analyze fatty acid methyl esters. D. requires that cells be grown under standardized conditions. E. All of these choices are correct.
Most major enzymatic digestion of food material stakes place where in the digestive system?
A) Stomach B) Small intestine C) Mouth D) Large intestine
The function of the polymerase chain reaction in genetic engineering is to
A. link together newly joined fragments of DNA. B. cut DNA into many fragments. C. make multiple copies of a specific segment of DNA. D. separate fragments of DNA by their length and electrical charges. E. carry DNA into a new cell.
________ is a type of an allergic response in which the release of histamines triggers breathing passages to become narrow.
Fill in the blank(s) with the appropriate word(s).