What Is the Ratio of the Brightnesses of Two Stars

question 93

Multiple Choice

What is the ratio of the brightnesses of two stars if their apparent magnitudes differ by +1?

• A) about 2.5
• B) 100
• C) 2, by definition
• D) 10

Recognize the importance of theory in scientific research.

Differentiate between experimental, correlational, and observational study designs.

Interpret relative and absolute risks in health-related outcomes.

Comprehend the application and implications of different types of validity (predictive, criterion, etc.).

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Definitions:

Membrane Channels

Proteins in cell membranes that allow the passage of ions or molecules in and out of the cell.

Phospholipids

A type of lipid molecule that is a major component of all cell membranes, providing structural integrity and involved in signaling pathways.

Proteins

Large molecules made up of amino acids that perform a variety of functions in the body, such as catalyzing metabolic reactions and supporting cell structure.

Alleles

Variants of a gene that arise by mutation and are found at the same place on a chromosome.