It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following?
A) sequence of bases
B) phosphate-sugar backbones
C) complementary pairing of bases
D) side groups of nitrogenous bases
A
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Many people develop "mountain sickness" when they travel to high altitudes, developing headaches, difficulty
sleeping, and nausea from the lack of oxygen. Which process fails to occur in people who continue to have mountain sickness after being at high altitude for a few days?
a. evolution b. dynamic equilibrium c. acclimation d. acclimatization e. biorhythms
Neurospora and Aspergillus
a. are bacteria. b. are used in a similar manner as E. coli to elucidate biochemical pathways. c. are prokaryotes. d. can be grown and analyzed biochemically as individual cells e. are affected by bacteriophages.
Hemodialysis
a. involves removing the patient's blood, cleansing it, and returning it to the body. b. can be done at home by pumping dialysis solution into the abdominal cavity. c. only needs to be performed once a month. d. fits all of these descriptions. e. fits none of these descriptions
The appearance of lungs was a(n) ____ that drove the evolution of land vertebrates
a. key innovation b. fixed trait c. inbred trait d. clade e. stabilizing allele