Which habitat is most likely to be rich in fossils?
a. eroding hillsides
b. deserts
c. polar ice caps
d. bed of former shallow sea
e. rocky plateau
d
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The difference in the appearance of the male and the
female is known as a. polymorphism. b. sexual dimorphism. c. the dioecious condition. d. sexual selection. e. a primary sexual characteristic.
The organ of Corti is located in the
a. thoracic cavity. b. inner ear. c. abdominal cavity. d. brain stem. e. semicircular canals.
Examined cancer cells from the lungs of smokers demonstrate which of the following?
A) mutation rates that are similar to those in a smoker's heart B) normal mutation rates compared to non-smokers C) unregulated methylation patterns D) the occurrence of tumor-suppressor mutations is less in the lung than the throat
Hydrogen bonds
A) are involved in stabilizing the structure of proteins and nucleic acids. B) are responsible for the unique properties of water. C) are involved in stabilizing the structure of proteins and nucleic acids and form whenever hydrogen is involved in any covalent or ionic bond. D) are responsible for the unique properties of water and are involved in stabilizing the structure of proteins and nucleic acids. E) form whenever hydrogen is involved in any covalent or ionic bond.