Caffeine Belongs to a Class of Chemicals Called ________

question 18

Multiple Choice

Caffeine belongs to a class of chemicals called ________.

• A)alkaloids
• B)flavonoids
• C)theobromines
• D)tannins
• E)cannabinoids

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Definitions:

Oceanic Crust

The thin layer of Earth's crust that underlies the ocean basins, composed mainly of basalt and denser than continental crust.

Continental Crust

The thick, buoyant part of the Earth's crust that forms the continents, characterized by its granitic composition.

Entire Earth

Refers to the whole planet, encompassing all its physical components and phenomena.

Banded Iron Formations

Sedimentary rocks consisting of alternating layers of iron-rich minerals and silica, significant as a source of iron and as evidence of Earth's oxygenation.