Bioremediation of uranium can be accomplished by microbes that reduce U6+, which is ________, to U4+, which is ________
a. toxic / nontoxic
b. soluble / particulate
c. radioactive / nonradioactive
d. immobile / mobile
Answer: B
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The filamentous phages all contain
A. single-stranded DNA. B. double-stranded DNA. C. single-stranded RNA. D. double-stranded RNA.
Choose the letter that best describes the function of this receptor type: Merkle cell
A. tonic receptors located near the surface of the skin B. pressure sensitive receptors deep in the subcutaneous layer C. receptors on the face and fingertips sensitive to light touch
The part of the central nervous system that is composed of parts that are antagonistic to each other is
the a. autonomic nervous system composed of the sympathetic and parasympathetic subsystems. b. central nervous system composed of the brain and spinal cord. c. peripheral nervous system composed of the cranial and spinal nervous system. d. None of these; the muscular system is the only system with antagonistic subsets. e. All of the subunits of the CNS are antagonistic to the subunits of the PNS.
Prescription drugs such as Prozac help maintain higher levels of serotonin in the brain. What effect will this have on an individual?
A) It will act to suppress impulsive behavior because too much serotonin causes children to act out. B) It will act as an antidepressant because a lack of serotonin is considered a cause of depression symptoms. C) It will cause a patient to be sleepy because serotonin is essential to a good night's sleep. D) It will cause tetany due to an overproduction of acetylcholine.