Quiz on RNA & Protein Synthesis

What is the main job of RNA?

• To build the cell wall

• To store all genetic information

• To produce energy

• To carry instructions from DNA to where proteins are made

Which of these is NOT one of the three main types of RNA?

• Messenger RNA (mRNA)

• Ribosomal RNA (rRNA)

• Transfer RNA (tRNA)

• Structural RNA (sRNA)

What does messenger RNA (mRNA) do?

• Forms the structure of the ribosome

• Stores genetic information

• Carries the genetic message from DNA to ribosomes

• Brings amino acids to the ribosome

Where does transcription occur?

• In the ribosome

• In the nucleus

• In the cytoplasm

• In the mitochondria

What is the purpose of transcription?

• To generate energy

• To copy proteins into RNA

• To divide the cell

• To create an RNA copy of a DNA segment so its instructions can be used to make proteins

What is translation?

• The copying of DNA into RNA

• The process of building proteins using the mRNA code

• The splitting of a cell into two

• The process of making RNA from proteins

Where does translation occur?

• In the mitochondria

• In the cytoplasm on ribosomes

• In the nucleus

• In the cell membrane

How many common amino acids are used to build proteins?

• 64

• 4

• 20

• 10

How many codons are possible in the genetic code?

• 3

• 64

• 20

• 4

Why can most amino acids be coded by more than one codon?

• Because there are exactly 20 codons

• Because the DNA sequence is random

• Because proteins are not important

• Because there are 64 codons but only 20 amino acids