For what purpose would a microbial ecologist use a microsensor?
A) to determine the concentration of cells in small increments in a sediment or water column
B) to determine the expression of a particular gene in a microbial community
C) to quantify the uptake of a radioactive material
D) to determine the concentration of O2, N2O, or other chemical species in small increments in a sediment or water column
Answer: D
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The DNA site to which the repressor protein binds is the
A. operon. B. regulon. C. operator. D. repressor
An adaptive radiation may be triggered after the demise of a successful group
a. True b. False
Cerebrospinal fluid is found in the space between ____
a. arachnoid and pia maters b. skull and dura mater c. pia mater and brain d. dura and arachnoid maters e. scalp and skull
The circulatory system transports many important substances such as oxygen and nutrients. Which of the following helps keep the blood flowing normally?
A) nutrients in the blood plasma B) muscular walls of the arteries C) oxygen content of the blood D) hemoglobin in the blood