11 (Molecular Genetics) Review

When a ribosome "reads" a strand of RNA, it recognizes codons, three-base codes that indicate a particular amino acid.

• True
• False

RNA never leaves the nucleus, because it is considered the "blueprint" for life.

• True
• False

What are the basic building blocks of DNA and RNA?

• nucleotides
• pyrimidines
• ribose
• phosphate group
• purines

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day as a source of energy

A long chain of amino acids is a/an

• tRNA
• mRNA
• nucleotide
• protein

If a DNA molecule consists of 38% guanine, how much cytosine will it contain?

• 38%
• 24%
• 76%
• 48%

Use the codon chart to write the amino acids that corresponds to each codon found in mRNA: CCC CGA GAA UUU AGU UAC CGU CCA

• GGG GUC CUU AAA UCA AUG GCA GGU
• GGG GTC CTT AAA TCA ATG GCA GGT
• Pro - Arg - Glu - Phe - Ser - Tyr - Arg - Pro
• Pro - Asp - Lys - Phe - Stop

Which of the following binds to a specific amino acid and brings it to the ribosome?

• mRNA
• tRNA
• rRNA
• DNA

A strand containing ribose and uracil is called

• DNA
• RNA
• deoxyribose
• hydrogen bond

Complementary base-pairing links :

• amino acids
• nitrogenous bases
• phosphate groups
• proteins