How Much Time Does It Take for a 1-Solar-Mass Protostar

question 146

Multiple Choice

How much time does it take for a 1-solar-mass protostar to reach the main sequence?

• A) less than 10,000 years
• B) 100,000 to 1 million years
• C) 1-10 billion years
• D) 10-100 million years

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Definitions:

Protons

Positively charged subatomic particles found within the nucleus of an atom and determining the atom's element.

Eukaryotes

Organisms whose cells contain a nucleus enclosed within a membrane, including animals, plants, fungi, and protists, distinguishing them from prokaryotes.

Peptidoglycan

A polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of most bacteria, providing structural support and shape.

Mitochondria

Membrane-bound cell organelles that produce most of the chemical energy needed to power the cell's biochemical reactions.