Which of the following nutrient cycles relies heavily on the role of bacteria?
A. carbon cycle
B. hydrologic cycle
C. nitrogen cycle
D. phosphorus cycle
C. nitrogen cycle
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Why would a photosynthetic organism have more than one type of pigment within their cells?
a. To provide a backup source of energy if the main pigment type fails b. To direct light towards the primary pigment c. To optimize the amount of energy that can be harvested in specific environments d. To provide structural support for the primary pigments e. To allow photosynthesis to occur at any time of the day
How long would it take to transfer genes a and b to an F- cell?
a. 1 minute b. 7 minutes c. 90 minutes d. 4 minutes e. 6 minutes
Reducing medium is used to isolate ________ microbes
A) fastidious B) obligate aerobic C) autotrophic D) obligate anaerobic E) intracellular parasitic
The West Nile virus is classified as a(n)
A) rhinovirus. B) coronavirus. C) togavirus. D) flavivirus. E) enterovirus.