Which H+ has just passed through the inner mitochondrial membrane by facilitated diffusion?
A) hydrogen ion A
B) hydrogen ion B
C) hydrogen ion C
D) hydrogen ion D
Answer: D
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As early as the 1940s, researchers knew that bacteria could be grown in a minimal medium containing ____ as an
organic carbon source.
a. peptidase b. glucose c. rubisco d. catalase e. ammonium chloride
If the F1 gametes show a distribution pattern like
that shown in the illustration below, then they present an example of a. independent assortment. b. full linkage. c. crossing over. d. incomplete linkage. e. crossing over and incomplete linkage.
A person who has blurred vision caused by a misshapen lens or cornea has
A) myopia. B) astigmatism. C) presbyopia. D) hyperopia.
Two bird species have different mating calls, occupy different habitats in nature, and when they hybridize, the hybrids are infertile. Which isolating mechanisms maintain these species?
A. ecological isolation, mechanical isolation, hybrid sterility B. mechanical isolation, hybrid sterility, geographical isolation C. ecological isolation, behavioral isolation, and hybrid sterility D. geographical isolation, temporal isolation, behavioral isolation