Which taxonomic group of microorganisms is primarily responsible for the oxygenation of Earth?
a. anaerobic bacteria
b. cyanobacteria
c. filamentous algae
d. purple phototrophic bacteria
Answer: B
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During the process of pyruvate oxidation, pyruvate is broken down and the remaining two carbons are attached to
coenzyme A.
a. True b. False
Water molecules exhibit cohesive and adhesive properties. What is the chemical bond characteristic that contributes to these and other numerous important properties of water molecules?
A. The covalent bond strengths of water molecules change with pH, temperature, or solute conditions present. B. The covalent bonds that form water molecules transform to ionic bonds in presence of other molecules, temperature changes, or pH. C. Hydrogen bonds form between water molecules, not requiring gain, loss, or sharing of electrons. D. Bonds that form water are of the nonpolar covalent form. E. Ionic bonds between water molecules create increased surface tension.
A lipoprotein is a combination of protein and
1.cholesterol, triglycerides, and phospholipids. 2.oligosaccharides. 3.fatty acids. 4.nucleic acids. 5.collagen.
Frederick Law Olmsted, known as the father of American landscape architecture, is known for designing _________ and then becoming the original commissioner of _____________ National Park.
A. New York's Central Park, Yosemite B. Niagara Falls, Yellowstone C. Greek-style public gardens, Yellowstone D. Yellowstone National Park, Yosemite E. Chicago's City Parks, Yellowstone