Control systems most likely involved in maintaining homeostasis are termed positive feedback
Indicate whether the statement is true or false
FALSE
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Which of the following scenarios describe an ecological succession?
A. The site of a volcano eruption that is going back to its pre-eruption state B. The regrowth of a forest after a fire C. An old field left abandoned that transforms back into a forest over time D. All of the above are examples of ecological succession
Jalapeño peppers contain the chemical capsaicin. If you lack the nociceptors that bind capsaicin, what would be the
predicted outcome?
a. You would be especially sensitive to spicy foods containing capsaicin. b. You would be able to eat foods containing high concentrations of capsaicin and not feel any burning in your mouth. c. You would have the same sensitivity to capsaicin as most other people. d. You would experience a feeling of cold when eating foods containing capsaicin. e. You would be more easily addicted to capsaicin-containing foods than normal individuals.
Hiking up an elevational gradient, you notice different species of birds becoming more dominant the higher you go. This could be because
A) older birds prefer lower elevations. B) competitive abilities change along environmental gradients. C) of population cycling. D) there are more predators at higher elevation.
Which of the following is transmitted by the fecal-oral route?
A) Entamoeba histolytica B) Plasmodium C) Schistosoma D) Trichomonas E) Schistosoma and Trichomonas