Protein Synthesis Review

Which of these nucleic acids carries the blueprint for an organism’s traits?

• tRNA

• mRNA

• rRNA

• DNA

Genes contain instructions for assembling—

• DNA nucleotides

• carbohydrates

• nitrogen bases

• proteins

Which of the following shows the three parts of an RNA nucleotide?

• ribose, phosphate group, thymine

• ribose, phosphate group, uracil

• deoxyribose, phosphate group, uracil

• deoxyribose, phosphate group, cytosine

The types of proteins produced in a cell are regulated by the—

• shape of DNA molecule.

• size of nucleotides in DNA molecules.

• location of DNA molecules.

• order of nucleotides in DNA molecules.

Which of the following RNA types is/are involved in transcription?

• transfer RNA only

• messenger RNA only

• ribosomal RNA and transfer RNA only

• messenger RNA, ribosomal RNA, and transfer RNA

Which mRNA sequence complements the given section of DNA? GATCCT

• C U A G G A

• T C G A A G

• C T A G G C

• A G C U U C

How many nucleotides would it take to carry the code for a protein with 4 amino acids?

• 4

• 8

• 12

• 16

Which molecule carries attached amino acids?

• tRNA

• mRNA

• rRNA

• DNA

Use Figure 1: codon chart above. A strand of mRNA containing the repeating sequence AAGAAGAAGAAG could code for which of the following amino acid sequences?

• lys–arg–glu–lys

• ser–ser–glu–glu

• lys–arg–lys–arg

• lys–lys–lys–lys

Use the codon chart above. Which of the following codons would signal a stop for the assembly of a protein?

• CUA

• ACG

• GAC

• UAG