Adult stem cells in the brain are totipotent and differentiate into neurons and glial cells
_________________ Indicate whether the statement is true or false.
F, pluripotent
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Which of the following statements about invasive species is false?
A. The effect of invasive species on natural communities is always a reduction in diversity. B. Humans are responsible for dramatic increases in the number of invasive species. C. Invasive species often thrive in new areas because they have few natural predators. D. Introduction of invasive species has more devastating effects on islands because of the smaller number of predators and competitors in these systems. E. Invasive species reduce community diversity through displacement, competition, and predation.
The most dangerous outcome of a Taenia solium infection occurs when
A. larvae cross the placenta. B. eggs are ingested. C. larvae enter the body through intact skin. D. cysticerci are ingested. E. the host immune system fails to react against it.
Which of the following do(es) not depend directly on sunlight for energy?
I. producers (plants) II. consumers (animals) III. decomposers (bacteria) a. I only b. II and III only c. II only d. III only e. I and III only
It is sometimes jokingly said that you could study for your biology test by placing your textbook under your pillow at night and thereby learn by osmosis, as the knowledge would flow from the book to your brain while you slept
Aside from the obvious absurdity of this claim, what is wrong with the use of the word "osmosis" in this context? How might you lose knowledge (if knowledge could actually flow along a concentration gradient between a book and a brain) if you tried this technique?