Which of the Following Is TRUE Regarding Planetary Nebulae

question 1

Multiple Choice

Which of the following is TRUE regarding planetary nebulae?

• A) Some are spherical, but most have bipolar structure.
• B) They are the result of the mass loss during the main sequence stage of the most massive stars.
• C) They are the rings of material surrounding newly formed stars that will eventually form the planetary systems.
• D) They are the ejected envelopes of highly evolved brown dwarf stars.
• E) They are the coronas surrounding most blue stragglers.

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Definitions:

Amino Acids

Organic molecules that unite to create proteins, acting as the foundational elements of life.

Nucleotides

The basic building blocks of nucleic acids, like DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogenous base.

Codon

Sequence of three nucleotides in mRNA or DNA that codes for a specific amino acid in a protein.

mRNA

Messenger RNA, a form of RNA that carries genetic information from the DNA to the ribosome, where it can be translated into a protein.