There is a giant sequoia (Sequoiadendron giganteum) named Washington (after George Washington) that was believed to be the second largest tree in the world (253.7 ft in height!) until it was struck by lightning in 2003
The lightning strike caused a fire at the top of the tree
that reduced Washington's height to about 229 feet. The fire released carbon that was
sequestered in wood into the environment in the form of __________.
A. CO2
B. heat
C. sugar
D. ash
E. air
A
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In Frederick Griffith's experiment, live R cells and dead S cells were injected into mice, causing fatal pneumonia. Neither live R cells nor dead S cells alone cause pneumonia, so Griffith concluded that _____
1.DNA is the genetic material 2.some, but not all, R cells cause pneumonia 3.DNA encoding the ability to form capsules was released from dead S cells and picked up by R cells 4.hereditary information of unknown identity transformed R cells into S cells 5.DNA controls the synthesis of specific products
Which of the following pairs correctly matches the monomer with its polymer?
A) peptides; proteins B) amino acids; polysaccharides C) glucose; proteins D) terpenes; nucleic acids E) nucleotides; nucleic acids
Bone performs four of the following functions. Which is the exception?
a. movement in conjunction with skeletal muscle b. protection for internal organs c. mineral storage for calcium and potassium d. protection of central nervous system e. blood cell formation
Which of the following weather conditions would you expect to have the greatest negative impact on the sexual reproduction of mosses and ferns?
A) excessively wet and rainy conditions B) above-average temperatures for a few days C) a long dry period D) cool, damp, and windy conditions