Protein Synthesis

Transfer RNA (tRNA) reads the mRNA in groups of three bases called...

• codons

• anti-codons

• bases

• sequence

How many bases code for one amino acid?

• two

• three

• four

• all of them

If the DNA sequence was ATT CGT CTA, what would the mRNA sequence made be?

• UAA GCA GAU

• UAU CGA GAU

• AUU CGU CUA

• ATT CGT CTA

Where does translation take place?

• in the nucleus

• at a lysosome

• at a ribosome in the cytoplasm

• at a mitochondria

What base does RNA have that DNA does not?

• thymine

• guanine

• cytosine

• uracil

What is made from a strand of DNA during transcription?

• mRNA

• tRNA

• rRNA

• DNA

Which correctly outlines the central dogma?

• DNA -- tRNA -- protein

• DNA -- mRNA -- tRNA

• DNA -- amino acid -- protein

• DNA -- mRNA -- protein

What is the difference between DNA & RNA

• DNA contains thymine and RNA contains uracil

• DNA is involved in transcription and RNA is involved in translation

• DNA and RNA are made of nucleotides

• all of the above

Which of the following is not a step in DNA replication?

• The DNA is cut into pieces using polymerase enzymes

• DNA polymerase adds complementary bases to each template resulting in two double strands of DNA

• The enzyme helicase unwinds and unzips the double helix to prepare it to serve as a template

• Each strand of the parent DNA serves as a template for the new molecule

Select the answer(s) below that follows base-pairing rules?

• A always pairs with G

• C always pairs with A

• T always pairs with A

• G always pairs with C

• U always pairs with T