Magnetic Orientation in Rocks That Is Opposite to the Current

question 17

Multiple Choice

Magnetic orientation in rocks that is opposite to the current orientation of Earth's magnetic field is called __________ magnetic polarity.

• A) normal
• B) reversed
• C) regular
• D) irregular

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Definitions:

Cholesterol

A waxy, fat-like substance found in all cells of the body, important for making hormones, vitamin D, and substances that help digest foods.

Steroids

A class of lipid molecules that includes hormones, vitamins, and cholesterol, which serve various functions in organisms.

Phospholipids

A class of lipids that are a major component of all cell membranes, containing two fatty acids, a phosphate group, and a glycerol molecule.

Polymer

Macromolecule consisting of covalently bonded monomers; for example, a polypeptide is a polymer of monomers called amino acids.