A wooded area is converted to a housing development and strip mall. Predict and briefly describe three ways this change in land use could affect atmospheric carbon dioxide levels
What will be an ideal response?
Carbon
dioxide levels should rise due to the reduction in green plants that would use CO2 in the
photosynthetic process, more CO2 being generated by more cars in the area and more CO2
generated by burning fossil fuels to heat the houses.
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Which structure in the figure secretes an alkaline fluid that protects sperm by neutralizing acids in the urethra?
a) C b) H c) B d) G e) F
What are gustducins?
A) Gustducins are gustatory sensory neurons that transmit the gustatory signals. B) Gustducins are taste buds. C) Gustducins are ion-gated channels on the gustatory receptor cell that respond to sodium ions from salt solutions or hydrogen ions from acidic or sour solutions to induce depolarization in the cell. D) Gustducins are G protein complexes that use second messengers to produce the depolarization in the cell from sweet, bitter, and umami sensations. E) Gustducins are epithelial projections on the surface and sides of the tongue that may contain taste buds.
According to the Bohr effect, as pH is lowered, the affinity of hemoglobin for oxygen ________.
A. decreases B. remains unchanged C. increases
When you say "ah" and stick out your tongue, which muscle do you use?
A. genioglossus B. hyoglossus C. styloglossus D. palatoglossus E. stylohyoid