Ergot, a fungus, contains a hallucinogenic drug that binds to serotonin receptors. The natural drug is most similar to ________
A) mescaline
B) methamphetamine
C) LSD
D) morphine
C
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Substrate level phosphorylation reactions occur in the process of chemiosmosis
__________________ Indicate whether the statement is true or false.
The ________ are the macrophages of the central nervous system.
Fill in the blank(s) with the appropriate word(s).
A plant developed a mineral deficiency after being treated with a fungicide. What is the most probable cause of the deficiency?
A) Mineral receptor proteins in the plant membrane were not functioning. B) Mycorrhizal fungi were killed. C) Active transport of minerals was inhibited. D) The genes for the synthesis of transport proteins were destroyed.
Before Darwin, scientists such as Lamarck envisioned evolutionary change as transformational—properties of an ensemble change because every member of the ensemble changes
Darwin's theory of evolutionary change was by contrast a variational one—the properties of an ensemble change because of the action of some sorting process acting on preexisting variation within the ensemble. Re-ferring to the figure above, describe the kind of sorting process that takes place when we use artificial selec-tion to change the characteristics of a breed of animals or plants and when natural selection operates on a population. What will be an ideal response?