RNA and Codons

How does RNA differ from DNA?

• RNA contains uracil and deoxyribose
• RNA contains ribose and thymine
• RNA contains uracil and ribose
• RNA contains adenine and ribose

How would the DNA sequence GCTATA be transcribed to mRNA?

• GCUAUA
• CGATAT
• CGAUAU
• GCUTUT

Tags

NGSS.HS-LS1-1

Promoters are

• genes that code for individual proteins
• proteins that bind with DNA and prevent transcription
• DNA sequences near operons that regulate transcription
• small molecules that bind with repressor proteins

In messenger RNA, each codon specifies a particular

• nucleotide
• enzyme
• amino acid
• promoter

When using your codon chart, what sequence can you use to find the correct amino acid?

• DNA

• mRNA

• tRNA

• Any of these will do

How many nucleotides make up a codon?

• 1

• 3

• 5

• 15

How many codons: AAU GCG AUG

• 9

• 1

• 3

• 15

How many nucleotides? AAU GCG AUG

• 9

• 3

• 1

• 15

RNA is read in sections called:

• Triplets
• Genes
• Codons
• Genes

ATCAGTGAT A codon is a sequence of three nucleotides that code for an amino acid. If the DNA sequence shown here goes through transcription and translation, how many amino acids will result from this sequence?

• 5
• 4
• 2
• 3

Tags

NGSS.HS-LS1-1