By the endosymbiotic theory, early eukaryotes acquired the mitochondrion from a symbiotic bacteria. What happened to the bacterial genes?
a. All of the bacterial genes were lost.
b. All of the bacterial genes were transferred to the nuclear genome.
c. All of the bacterial genes still exist and comprise the mitochondrial genome.
d. All of the bacterial genes still exist and comprise the chloroplast genome.
e. Some bacterial genes transferred to the nucleus, some were lost, and some comprise the mito-chondrial genome.
E
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An unfortunate deer becomes stuck in quicksand at the edge of a lake and dies. A few months later, it is buried by sediment in a massive landslide, but by this time, bacteria have fully decomposed its soft tissues. Several million years later, archeologists are digging at the spot where the deer dies and was buried. Would the archeologists be able to find a fossil of the deer? Why or why not?
A. No, because it needed to be fully intact when buried to form a fossil. B. Yes, because its skeleton could have been replaced by minerals to form a fossil. C. No, because bacteria continued to decompose its skeleton after it was buried. D. Yes, because it would have fossilized before it was buried.
The conclusion from the energy flow study in Silver Springs was that
a. energy flows are difficult to measure. b. most of the sun's energy is harvested. c. only a little energy is transferred from one trophic level to the next. d. the energy flow in carnivores is equal to that of producers. e. trophic energy losses are not significant.
Endotoxins are released in large amounts only when cells lyse
Indicate whether the statement is true or false.
According to our text, ________ is (are) currently the company associated most with political-economic power and the negative cultural consequences of globalization
A) Wal-Mart B) the New York Yankees C) Coca-Cola D) Starbucks E) Crazy Jim's Blimpy Burgers of Ann Arbor, MI