Which of the following is recognized as a microbe capable of nitrification?
A. Nitrosomonas europaea
B. Red photosynthetic bacteria
C. Hyphomicrobium spp.
D. Purple nonsulfur bacteria
Answer: A
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Ribozymes are ________.
A. catalysts for DNA splicing B. catalysts for RNA splicing C. unique to eukaryotes D. ribosomes which catalyze reactions E. unique to prokaryotes
The FtsZ gene in bacteria encodes an ancestral tubulin that is important in binary fission (the mechanism of cell division in prokaryotes). To study the FtsZ gene in eukaryotes, researchers made an FtsZ knockout in the moss What is true about this knockout plant?
A. The knockout plant is heterozygous for an abnormal FtsZ gene. B. The knockout plant does not produce any normal FtsZ protein. C. The knockout plant contains a copy of the bacterial FtsZ gene. D. The knockout plant makes bacterial FtsZ protein. E. The knockout plant makes half the normal amount of FtsZ protein.
The mutualistic partnership between plant roots and microbes is ________.
A. rhizopods B. lichens C. mycorrhizae D. basidia E. hyphae
A closed circulatory system usually consists of all of the following except:a
blood. b. pumping organ. c. arteries d. veins. e. hemocoel.