A Galaxy Is Measured to Have a Redshift of Z

question 49

Multiple Choice

A galaxy is measured to have a redshift of z = 5.0.This galaxy is

• A) filled with very cold gas.
• B) moving at 5 times the speed of light.
• C) dominated by gravitational redshift due to its supermassive black hole.
• D) dominated by older, redder stars.
• E) so far away that cosmological redshift dominates our observation.

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Definitions:

Complement

Group of serum proteins that stimulates phagocytosis and inflammation.

Classical Pathway

Part of the specific immune system for activation of complement.

C3

A protein component of the immune system's complement system, which enhances the ability of antibodies and phagocytic cells to clear pathogens from an organism.

Foreign Antigens

Substances from outside the body that can induce an immune response.