Carbon monoxide ____
a. traps heat in the atmosphere
b. is an atmospheric pollutant
c. causes acid rain
d. interferes with the nervous system
e. binds to a hemoglobin molecule and interferes with oxygen uptake
ANSWER: e
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Plants use day-length cues to make preparations for winter, such as increasing the size of roots and other storage organs
A. true B. false
Which of the following statements about mammalian cleavage is false?
A. The embryo increases in overall size during cleavage. B. It occurs more slowly than cleavage in other organisms. C. Early divisions do not occur at the same time. D. Zygotic transcription begins as early as the two-cell stage. E. Cell divisions extend completely through the egg.
DNA methylation of a gene during spermatogenesis would result in
A. the inactivation of the paternal allele in the offspring. B. dosage compensation by the paternal allele. C. the inactivation of the maternal allele in the offspring. D. the inactivation of the X chromosome. E. dosage compensation by the maternal allele.
Pattern baldness is a(n) ____ trait
a. X-linked b. Y-linked c. sex-linked d. sex-limited e. sex-influenced