The physical location of a gene on a chromosome is a gene's ________
A) genome
B) telomere
C) locus
D) allele
E) None of these choices
C
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A stretch receptor is classified as a
a. chemoreceptor. b. mechanoreceptor. c. photoreceptor. d. thermoreceptor. e. all of these.
Experimental studies of calorie _________ have shown that typical ad libitum (free feeding) levels of consumption are unhealthy in many mammalian species
Fill in the blank(s) with the appropriate word(s).
Of these events, the first to occur when a motor neuron stops sending an impulse to a muscle is _____.
A. the pumping of calcium ions out of the cytoplasm and back into the sarcoplasmic reticulum B. the release of myosin heads from the thin filament C. thin filaments slide back to their relaxed positions D. proteins on the thin filaments block actin's myosin-binding sites E. all of these events occur simultaneously
Microorganisms in the human colon are more often being described as mutualistic with human hosts rather than commensalistic. Why has this change in the definition of a symbiotic relationship occurred?
A. As we learn more about the ecology of the human microbiome, we have learned that these organisms are dependent on the nutrients that we provide for their survival. B. As we learn more about the makeup of the human digestive tract, we realize that some microorganisms are potentially pathogenic, while others are not. C. As we learn more about the ecology of the human microbiome, we recognize our dependence on these organisms for immunity, vitamin production, and other essential processes. D. All of the choices are correct.