Star a Is a Red Star

question 84

Multiple Choice

Star A is a red star.Star B is a blue star.You are able to determine that both stars are the same size.Which star appears brighter in your sky?

• A) Star A is brighter.
• B) Star B is brighter.
• C) They have the same brightness.
• D) We also need to know the distance of the stars to determine their brightness.
• E) Color is not related to brightness at all.

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Definitions:

Deoxyribonucleic Acid

DNA; the molecule that contains the genetic instructions for the development and function of living things.

Ribonucleic Acid

A nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Antidiuretic Hormone

Also known as vasopressin, it is a hormone that helps to control the body's water balance through its effect on the kidneys and reduction of urine output.

Monozygotic Twins

Twins that are genetically identical because they were formed from a single fertilized egg that split into two.