The Global Extinction Rate Began to Increase

question 5

Multiple Choice

The global extinction rate began to increase

• A) before humans migrated from Africa.
• B) coincided with the development of agriculture.
• C) began when humans became hunter-gatherers.
• D) when the Pleistocene glaciers advanced.
• E) none of the above

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Definitions:

β-Tubulin

A protein that is a fundamental building block of microtubules, which are structural components of the cytoskeleton in cells and are involved in cellular processes like division and motility.

Microtubule

Tubular structures within the cytoplasm of cells, important for a variety of functions including cell division and intracellular transport.

Peroxisomes

In eukaryotic cells, membrane-enclosed organelles containing enzymes that produce or degrade hydrogen peroxide.

Mitochondria

Organelles within eukaryotic cells that produce energy through the process of cellular respiration, often referred to as the powerhouse of the cell.