Codons

What does tRNA do during translation?

• it brings a specific segment of DNA to the ribosome for transcription

• it brings any amino acid to the ribosome

• it brings a specific amino acid (decided by the DNA) to the ribosome for translation

• it brings a specific amino acid (decided by the codon) to the ribosome for translation

Anti-codons are located on...

• DNA

• mRNA

• tRNA

• rRNA

Which defines a codon in DNA or mRNA?

• pair of nucleic acid and sugar

• pair of phosphate and sugar

• three-base code

• two-base code

What is the start codon?

• UAC

• TAC

• AUG

• GUA

Codons are located on the...

• DNA

• mRNA

• rRNA

• tRNA

The stop codons are:

• UAA

• UAG

• GUC

• UGA

The DNA sequence UAGCGAUUACGU is part of a gene. How many amino acids are coded for by this sequence?

• 20

• 4

• 8

• 12

Tags

NGSS.HS-LS1-1

Sequence of 3 consecutive nucleotides that code for one amino acid

• Anti-codon

• Protein

• Bases

• Codon

A codon is a group of ___ RNA bases.

• 1

• 3

• 5

• 6

Set of three nucleotides in a tRNA molecule that binds to a complementary mRNA codon during translation

• Anti-codon

• Codon

• Amino acid

• Bases