The Existence of a Single Original Continent Has Been Proved

question 80

Multiple Choice

The existence of a single original continent has been proved by the presence of  

• A) similar mountain ranges on the various continents.
• B) nearly identical species of fish in long-separated freshwater lakes throughout the world.
• C) marsupials on the various continents.
• D) the continued shifting of the earth's crust.
• E) geological evidence of soil samples common among all continents.

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Definitions:

Microfilaments

Microfilaments are fine, thread-like protein fibers, composed largely of actin, that are a part of the cytoskeleton in eukaryotic cells, involved in cell movement and shape.

Linker Proteins

Proteins that function to connect the cytoskeleton of a cell to other cell components or to other cells, playing key roles in cell structure and movement.

Glycolipids

Lipid molecules that contain carbohydrate groups, involved in cell recognition and signaling.

ATP Synthesis

The process by which cells produce ATP (adenosine triphosphate), involving the transfer of electrons through the electron transport chain and ATP synthase.