Chapter 14 Test - RNA & Proteins

How many strands make up a molecule of RNA?

• 1
• 2
• 3
• 4

Where does translation take place?

• Inside the nucleus
• Outside of the nucleus in the ribosomes
• Outside of the cell membrane
• In the mitochondria

Introns are:

• Pieces of genetic information that get expressed
• Unnecessary pieces of genetic information that get cut out of the mRNA before translation
• Proteins that function incorrectly due to a mutation
• An enzyme involved in RNA transcription

What kind of bond forms between amino acids?

• Covalent bonds
• Ionic bonds
• Peptide bonds
• Hydrogen bonds

The codon wheel should be read using:

• rRNA
• mRNA
• tRNA
• DNA

Which molecule is shown in this picture?

• rRNA
• tRNA
• Ribosome
• Cytoplasm

A three-base pair sequence on mRNA that codes for a specific amino acid:

• Codon
• Anticodon
• Polypeptide
• Mutation

What is a promoter?

• A region upstream on the DNA sequence where RNA polymerase can bind
• Part of the gene that gets cut out before translation
• A structural component of a ribosome
• The molecule that contains the genetic code

Substitutions are an example of:

• A point mutation
• An insertion
• A deletion
• A frameshift mutation

Nonsense mutations:

• Make no sense
• Have no effect on the final protein
• Cause one amino acid to change to another on the chain
• Terminate translation by adding a stop codon too early