Each individual's DNA contains over one million genes.
Answer the following statement true (T) or false (F)
False
Currently, the genome is estimated to contain 30,000-50,000 genes.
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Which statement is correct concerning the terms afferent and efferent with respect to the nervous system?
A. Both terms refer to conducting impulses toward the CNS although afferent pathways carry only motor impulses. B. Afferent refers to the conduction of sensory impulses toward the CNS. C. Afferent refers to the conduction of an impulse outward from the CNS. D. Both terms refer to conducting impulses outward from the CNS although efferent pathways carry only sensory impulses. E. Efferent refers to the conduction of motor impulses toward the CNS.
Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?
A) heart B) kidney C) lungs D) liver
How is O2 (oxygen) transported across the lung membrane?
a. by osmosis b. by pinocytosis c. by diffusion d. via a carrier lipid e. via a carrier protein
The hormone ANP causes systemic blood vessels to
A. constrict, which raises blood pressure. B. constrict, which lowers blood pressure. C. dilate, which lowers blood pressure. D. dilate, which raises blood pressure.