Which crop plant would likely have a mutualistic relationship with Rhizobium bacteria?
A. Wheat
B. Potatoes
C. Corn
D. Peas
E. Cotton
Answer: D
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The green sulfur bacteria are ________.
A. facultative anaerobes B. microaerophilic C. obligate anaerobes D. either obligate anaerobes or facultative anaerobes
A structure made up of two or more types of tissues that performs a specific set of functions is at what level of organization?
a. Chemical b. Cellular c. Tissue d. Organ e. System
The inducer for the E. coli lac operon is allolactose produced by the action of permease on lactose.
Answer the following statement true (T) or false (F)
Which of the following statements is true?
A) The process of respiration is critical for maintaining the freshwater pools on Earth's surface. B) Transpiration moves saltwater to the atmosphere and then to freshwater pools on Earth's surface. C) About 2.5 percent of Earth's water is fresh at any given time. D) Glaciers make up about 20 percent of Earth's freshwater pool. E) An aquifer is a pool of freshwater perched over the base groundwater that is accessible by humans.