The Following Question(s)are Based on the Observation That Several Dozen

question 20

Multiple Choice

The following question(s) are based on the observation that several dozen different proteins comprise the prokaryotic flagellum and its attachment to the prokaryotic cell,producing a highly complex structure.
-If the complex protein assemblage of the prokaryotic flagellum arose by the same general processes as those of the complex eyes of molluscs (such as squids and octopi) ,then

• A)natural selection cannot account for the rise of the prokaryotic flagellum.
• B)ancestral versions of this protein assemblage were either less functional or had different functions from modern prokaryotic flagella.
• C)scientists should accept the conclusion that neither eyes nor flagella could have arisen by evolution.

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Definitions:

Posttranslational Regulation Mechanism

Processes that modify a protein's function after it has been synthesized, impacting its activity, localization, or stability.

Proteolytic Processing

The enzymatic cleavage of protein precursors to form their active or mature states, a critical process in cellular regulation.

Chemical Modification

The alteration of a chemical compound's structure to change its properties or activity, often used in pharmaceuticals and materials science.

Protein Degradation

The process by which proteins are broken down into their amino acid components, often regulated by cellular mechanisms for metabolism and homeostasis.