Bacteria in the ?-proteobacterial clade ________ are the most abundant organisms on Earth and demonstrate unique adaptations to life in the oligotrophic open ocean.
What will be an ideal response?
SAR11
SAR 11
Sargasso Sea 11
Biology & Microbiology
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Which of the following is a characteristic of the oceanic zone?
a. numerous phytoplankton b. high nutrient content c. sand, silt, and dead organisms d. significant algal bloom
Biology & Microbiology
Which of the following cycles is thought to be most under biological control?
A) oxygen B) phosphorus C) sulfur D) lead
Biology & Microbiology
Production of a neurotoxin that prevents acetylcholine release from motor neurons at neuromuscular junctions is a characteristic of ________.
A. Clostridium difficile B. Clostridium botulinum C. Clostridium perfringens D. Clostridium tetani
Biology & Microbiology
Allopatric speciation is compatible with both the gradualistic and punctuated equilibrium models of evolution.
a. true b. false
Biology & Microbiology