Drugs called selective serotonin reuptake inhibitors (SSRIs) block reuptake of serotonin and are used to treat depression. Which of the following would occur in a patient given a SSRI?
A. Serotonin levels would decrease in the synapse.
B. Serotonin levels would increase in the synapse.
C. More serotonin would be released by the neuron.
D. Less serotonin would be released by the neuron.
E. The neuron would switch from serotonin to another neurotransmitter.
B. Serotonin levels would increase in the synapse.
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When scientists used flaps on the same plant to make observations of water flow they were attempting to remove the possibility of:
A. artificial results B. experimental variation C. differentiated results D. separation factors E. alignment factors
Each of the following is a primary purpose of the inflammatory response except:
A) to localize the infection. B) to neutralize any toxins being produced at the site. C) to prevent the spread of microbial invaders. D) to stimulate the production of opsonins.
What is gene regulation?
A. Mechanisms that turn on and off mitosis in the cell cycle B. Mechanisms that regulate the replication of DNA C. Mechanisms that regulate which genes get copied D. Mechanisms that turn on and off specific genes to change which proteins are made
Which process refers to dramatic phenotypic changes that sometimes occur in evolution, such as the appearance of
feathered wings during the evolution of birds? a. gradualism b. allopolyploidy c. macroevolution d. paedomorphosis e. microevolution