Which of the following organisms can function as chemoautotrophs? (Select all correct choices.)
A. eukaryotes
B. bacteria
C. archaeons
B,C
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The graph here shows the results of Jacob and Monod's first experiments with betagalactosidase and lactose in E. coli. If beta-galactosidase were unstable in the absence of lactose (one of the hypotheses they tested), what results would you expect to see?
A. the results shown in the graph B. an increase in beta-galactosidase after lactose is removed C. a decrease in beta-galactosidase after lactose is removed D. an initially high level of beta-galactosidase at the beginning of the experiment, with a steady decline over time E. None of these choices are correct.
You discover a fungus that is associated with plant roots, with hyphae that actually penetrate the root cells and
produces tree-like structures within the root cells. Into which group should you classify this fungus?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
A J-shaped growth curve is converted to an S-shaped one:
a. when the parents are past reproductive age b. if the data are plotted in reverse c. when the carrying capacity is reached d. if reproduction stops e. only for fast-growing populations such as bacteria
Smell and taste receptors would be classified as ____
a. photoreceptors b. chemoreceptors c. mechanoreceptors d. thermoreceptors e. nociceptors