There are more species of _____________ than there are species of plants.
a. beetles
b. mammals
c. crustaceans
d. flies
e. bees
Ans: a. beetles
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The complex of periplasmic flagella that mediates the movement of spirochetes is referred to as the ________.
A. axillary filament B. periplasmic flagella C. axial filament D. peritrichal axon E. periplasmic flagella or axial filament
Identify the correct steps for cloning a gene of interest, then arrange them in the correct order
1. Transform the bacteria. 2. Incubate the DNA fragments and cut cloning vector with DNA ligase. 3. Use restriction enzymes to cut the gene of interest and the cloning vector. 4. Spread bacteria on medium containing lactose and ampicillin. 5. Spread bacteria on medium containing X-gal and ampicillin.
a. 4, 3, 1, 5 b. 3, 2, 5, 1 c. 3, 2, 1, 5 d. 2, 3, 1, 5 e. 3, 2, 1, 4
Fossils in the deepest layers of sedimentary rocks are typically ____ compared to fossils in the more shallow layers
a. relatively large and fragile b. those that resemble living organisms c. those that resemble dinosaurs d. larger and more complex e. relatively small and simple
In general, communities that characterize a biome are
arrays of species that are adapted to a. specific temperatures. b. patterns of rainfall. c. soil type. d. each other. e. all of these.