Answer the following questions true (T) or false (F)
1. Southern blotting is a technique that can be used to identify microbes that cannot be cultured.
2. The microbes residing on human skin are part of the human microbiome.
3. Scientists were able to increase the production of naturally occurring vitamin A in rice plants.
1. TRUE
2. TRUE
3. FALSE
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Pyruvate can be metabolized along two major routes. They are
A. oxidation and reduction. B. fermentation and respiration. C. metabolism and anabolism. D. anabolism and catabolism.
The movement of NH4+ ions into a cell down an electrochemical gradient created by H+ pumping is an example of
____.
a. an ion pump b. passive diffusion c. facilitated diffusion d. secondary active transport e. passive transport
Bovine spongiform encephalopathy, or mad cow disease, is caused by a
A) bacterium. B) prion. C) virus. D) viroid. E) fungus.
A more or less circular ring of mushrooms appears in your yard, apparently overnight. The circle is several yards in diameter. The mushrooms appear to be producing spores. What is the most likely explanation for this circle of mushrooms?
A) The circle represents the fungal life cycle. B) The mushrooms are all part of the same organism, with mycelia radiating out from the location of a germinated spore. C) Mushroom spores were dropped by a circling bird, thus explaining the circular shape of the group of mushrooms. D) One mushroom in the circle reproduced sexually to make all the other mushrooms in the circle. E) The mushroom plants in the center of the circle were older and have already died or been eaten by herbivores.