Which of the following contains a polar covalent bond?
A) O-H
B) C-H
C) H-H
D) Na-Cl
A) O-H
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A newly described bacterial species has been shown to use CO2 as its carbon source. Its energy source and its source of reducing power (electrons) are inorganic chemicals. Which term would best describe this nutritional type?
A. Chemolithoheterotroph B. Photolithoheterotroph C. Photoorganoheterotroph D. Chemolithoatotroph
Which one of the following would be least likely to cross a lipid bilayer?
A. O2 B. CO2 C. ATP D. H2O E. N2
Discuss the reasons why cloning transgenic animals may be preferable over traditional breeding. What are some of the
problems with animal cloning?
What will be an ideal response?Which of the following is an adaptation of black-tailed prairie dogs?
a. modified digestive tracts to easily digest seeds and leaves of grasses b. transition to a carnivore lifestyle c. movement towards above ground living d. hibernation throughout the spring e. movement towards living in small social groups