Which event endangers far more species than the destruction of a comparable area elsewhere?
a. deforestation of temperate deciduous
b. desertification of grasslands
c. deforestation of taiga
d. desertification of savannah
e. deforestation in tropical rainforest biomes
ANSWER: e
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The observable expression of the genes present in an organism is called its
A. phenotype. B. genotype. C. pedigree. D. karyotype.
The approach of using mutagenesis and genetic selection to produce microbes with new degradative capabilities or the ability to produce compounds with new and unique properties is called ________ evolution.
Fill in the blank(s) with the appropriate word(s).
Continental drift caused the large supercontinent that existed during the Paleozoic era to separate into a northern
continent, called ____, and a southern continent, called ____.
a. Pangaea; Laurasia b. Laurasia; Gondwana
c. Gondwana; Laurasia d. Pangaea; Gondwana e. Gondwana; Pangaea
Patients with mitochondrial disorders share many symptoms, such as muscle weakness, because mitochondria ________
a. organize the construction of muscle protein b. generate the ATP that is necessary for muscle contraction c. facilitate the transport of glucose across the muscle cell membrane d. store and then release the oxygen used during muscle contraction