Approximately How Long After the Big Bang Did the First

question 13

Multiple Choice

Approximately how long after the big bang did the first galaxies and stars form?

• A) a hundred years
• B) a thousand years
• C) a billion years
• D) a million years

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Definitions:

Labeled

Marked with identifiers or tags for ease of identification or explanation.

Eukaryotic Transcription

The process by which genetic information from DNA is copied to messenger RNA in cells with a nucleus.

Upstream Promoter Elements

DNA sequences located before (upstream of) the coding sequence of a gene that help initiate transcription by binding specific proteins.

Enhancers

Regulatory DNA sequences that enhance gene transcription; can be located long distances away from the actual coding regions of a gene.