The terms "peritrichous," "lophotrichous," and "monotrichous" describe the a. means by which a bacterium obtains energy. b. distribution of the nucleoid within a bacterium. c. shape of bacterial cells. d. distribution of flagella around a bacterium.

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils