STAAR Bootcamp: Central Dogma of Life

Which statements correctly describes differences in DNA and RNA

Select two correct answers

• RNA uses the nitrogenous base uracil, while DNA uses the nitrogenous base thymine

• RNA is a single stranded molecule; DNA is double stranded

• Each nucleic acid has a backbone composed of sugars and phosphates

• each molecule contains the bases adenine, thymine, guanine and cytosine

Create a complementary strand of mRNA from the DNA strand using the sequence: TAC GAA

• AUG CUU

• ATG CTT

• GCA TCC

• GCA UCC

A codon chart has been provided. Use the following mRNA strand to select amino acids in the code

UCA AGC UAU UAG

Select all correct answers

• stop

• met

• ser

• tyr

• tyr

STAAR Review:

A model of transcription and a codon chart are shown.

Which main acid would be coded second from the DNA strand being transcribed?

• met

• leu

• phe

• stop

Correctly order the passage of genetic information from nucleic acids to proteins

• Protein (Amino Acid)

• RNA

• DNA