A proton ________ drives the protons out across the mitochondrial membrane into the intermembrane space.
Fill in the blank(s) with the appropriate word(s).
pump
A proton pump drives the protons out across the mitochondrial membrane into the intermembrane space.
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Which one of the following structures in the moss life cycle is not haploid?
A. germinating spore B. antheridium C. sperm D. spore mother cell E. rhizoid tissue
Evolution is the result of changes in the genetic makeup of species within the same population, throughout many generations. This can produce organisms well suited for their environments. Evolution consists of adaptation and natural selection. Adaptation can be distinguished from natural selection, as factors in evolution, in that natural selection
A. is not successful reproduction. B. describes the variability of the environments and conditions in which populations live. C. is the ability to reproduce regardless of its genetic traits. D. produces generations with traits within their population that allow them to reproduce and thrive. E. results from genetic mutations in asexual reproduction, whereas adaptation happens only in sexual reproduction.
The corpus callosum, which lies between the two cerebral hemispheres of the brain, is actually composed of an extensive network of
A. connective tissue. B. cell bodies. C. nerve tracts. D. blood vessels.
The Adam's apple is actually a part of the
Select one: a. pharynx. b. larynx. c. glottis. d. vocal cords. e. trachea.