A Star of Apparent Magnitude -1

question 29

Multiple Choice

A star of apparent magnitude -1.5 appears _____ than a star of apparent magnitude +2.0.

• A) farther away
• B) fainter
• C) brighter
• D) either brighter or fainter, depending on the distance to the stars,

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Definitions:

pH

A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (most acidic) to 14 (most basic), and 7 being neutral.

Predominant Form

The most stable or abundant form of a substance under specific conditions.

L-Methionine

An essential amino acid in humans used for the biosynthesis of proteins and important in the methylation of nucleic acids, proteins, and lipids.

Biological pH

The measure of acidity or alkalinity in biological systems, critical for various biochemical processes and often maintained within a narrow range.