Microorganisms assimilate large amounts of all of the following except ________ into organic molecules.
A. sodium
B. phosphorus
C. nitrogen
D. sulfur
Answer: A
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A newly reported member of the phylum Verrucomicrobia, Acidimethylosilex fumarolicum has been found to be thermophilic, acidophilic, and photosynthetic.
Answer the following statement true (T) or false (F)
The first genetic trait described in humans was ____
a. albinism b. dwarfism c. Marfan syndrome d. multiple sclerosis e. brachydactyly
In the late 1870s, Charles Darwin and his son, Francis, discovered that if the tip of the grass was covered, phototropism did not occur, even though the rest of the grass was exposed to light. However, if the rest of the plant was covered and only the tip exposed to light, the grass bent a few centimeters below the tip. Which of the following was sensing the light?
A. auxin-detecting cells in the tip of the grass B. auxin-producing cells in the tip of the grass C. auxin-producing cells a few centimeters below the tip of the grass D. auxin-detecting cells a few centimeters below the tip of the grass
There is a general inverse relationship between DNA content and organismic complexity
Indicate whether the statement is true or false