Which of the following is a bacterial structure of motility?
A) ribosome
B) cell wall
C) flagellum
D) pseudopoda
E) none of the above
Ans: C) flagellum
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Increasing atmospheric carbon dioxide is
A) increasing sedimentation of C, Ca, and Si. B) increasing the effect of the biological pump. C) fueling increased primary production in ocean waters. D) acidifying the ocean and decreasing the rate of formation of calcareous shells.
How do Archaea and Bacteria differ?
What will be an ideal response?
Which of the following diseases is NOT correctly matched to its reservoir?
A) tuberculosis — cattle B) histoplasmosis — soil C) psittacosis — parakeets D) coccidioidomycosis — air E) pneumocystis — humans
Which of the following is not a difference between prokaryotic and eukaryotic gene expression?
A. In prokaryotes, transcription and translation can be done simultaneously. B. Eukaryotic mRNAs are extensively processed before translation. C. Prokaryotic mRNAs have very short half-lives. D. Bacterial mRNAs contain no untranslated regions. E. Prokaryotic mRNAs may be polycistronic.