Certain Proteins of the Complex Motor That Drives Bacterial Flagella

question 62

Multiple Choice

Certain proteins of the complex motor that drives bacterial flagella are modified versions of proteins that had previously belonged to plasma membrane pumps.This evidence supports the claim that

• A)some structures are so complex that natural selection cannot,and will not,explain their origins.
• B)the power of natural selection allows it to act in an almost predictive fashion,producing organs that will be needed in future environments.
• C)the motors of bacterial flagella were originally synthesized abiotically.
• D)structures originally adapted for one purpose can take on new functions through descent with modification.
• E)bacteria that possess flagella must have lost the ability to pump certain chemicals across their plasma membranes.

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