The spores of streptomycetes are ________.
A. motile by means of flagella
B. nonmotile
C. motile by means of cilia
D. motile by means of pseudopodia
Answer: B
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Spermatophytes are:
A. all the kinds of plants that produce sperm B. all the living and fossil seed plants C. all the plants that have tracheids and phloem D. all the woody plants E. all the plants with a sporic life cycle
The diarrhea that is a symptom of diseases like cholera is due to problems in the function of which digestive organ?
A. stomach B. small intestine C. large intestine D. appendix E. gall bladder
The impacts of the microbial types that inhabit cross-sections of water sediment are vast. Consider that sediments deep beneath water surfaces are home to perhaps ________ of the world's bacterial and archaeal biomass.
A. 50% B. 10% C. 20% D. 95%
Which of the following would NOT strongly
associated with the word "acid"?
a. excess hydrogen ions b. magnesium hydroxide c. contents of the stomach d. HCl e. pH less than 7