The Gram stain, acid-fast stain, and endospore stain ________.
A. use heat to force the dye into cell structures
B. are differential stains
C. use a negative stain technique
D. are used on a wet mount of the specimen
E. have outcomes based on cell wall differences
Answer: B
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What do sea squirts and mussels have in common?
a. both are in the same phylum. b. both have incurrent and excurrent siphons. c. both are covered in a tunic. d. both reproduce asexually. e. both attach to the substrate using the same materials.
All of the following are greenhouse gases except
a. chlorofluorocarbons. b. carbon monoxide. c. methane. d. carbon dioxide. e. nitrous oxide.
Genetically-engineered organisms that carry foreign DNA are ____
a. Mutated b. Transgenic c. Transformed d. Virulent
e. DiseasedDNA and RNA are polymers composed of ________ monomers
A) nucleotide B) carbohydrate C) fatty acid D) amino acid