A Welded Tuff Forms When

question 20

Multiple Choice

A welded tuff forms when:

• A) hot lava flows over rocks, causing them to become metamorphic.
• B) semi- molten volcanic bombs fuse together.
• C) particles within a lahar cool and crystallize.
• D) particles within a nue´e ardente cool and crystallize.

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Definitions:

Codon AUA

A specific sequence of three nucleotides in mRNA that signals for the incorporation of the amino acid isoleucine during protein synthesis.

Single Mutation

A change in the DNA sequence affecting only one nucleotide base in the genome of an organism.

Second Letter

Refers to the second character in a sequence of letters, highlighting its position in written language or codes.

AUG

A codon in mRNA that not only codes for the amino acid methionine but also serves as the start signal for protein synthesis.