DNA & the Central Dogma

The structure of DNA is described as a ___ formed by two strands of nucleotides.

• double helix

• single spiral

• polymerase chain

• protein molecule

What mRNA nucleotides would match with the following DNA template

ATT - CTG - ACG

• ATT - CTG - ACG

• TAA - GAC - TGC

• UAA - GAC - UGC

• ACG - CTG - ATT

The three-base code on mRNA is called a(n) ____________.

• amino acid chain

• anti codon

• codon

• transfer RNA

This organelle is the site of protein synthesis (translation) .

• Chloroplast

• Nucleus

• Ribosome

• Mitochondria

What is produced at the end of transcription?

• polymerase

• messenger RNA

• ligase

• ribosome

Which of these nitrogen bases is not found in DNA?

• adenine

• uracil

• guanine

• thymine

Which enzyme shown here, binds to the site where messenger RNA will be synthesized?

• RNA polymerase

• template DNA strand

• nucleotide

• adenine

Translation occurs:

• Outside of the Nucleus
• Inside of the Nucleus

If the structure of DNA were likened to a ladder, what would make up the “supporting structure” (not the “rungs”) of the ladder?

• amino acids and sugars
• nucleotide bases, including thymine
• nucleotide bases, including uracil
• sugar-phosphate molecules

What structure is located at B?

• mRNA

• ribosome

• amino acid

• tRNA