RNA Quiz

Match the type of RNA to its correct description.

• Made of two parts - this type of RNA helps code for amino acids.

• tRNA

• A type of RNA that helps nucleic acids make amino acids. These amino acids will make proteins.

• mRNA

• A type of RNA that copies DNA.

• rRNA

This enzyme binds to DNA during transcription and separates the DNA strand. A single stand of mRNA can now copy one side of the DNA strand.

• DNA Polymerase

• RNA Polymerase

• Transcriptase

• RNA synthesis

A long chain of amino acids is also known as a _________________. These can contain up to 20 different amino acids.

• Polypeptide

• Polyploidy

• codon

• anticodon

True or False: A group of three nucleotide bases in mRNA that makes a particular amino acid is known as a codon.

• True

• False

True or False: Gene expression is the process by which DNA, RNA, and proteins are involved in putting genetic information into action in living cells.

• True

• False

Match the mutation name to its description.

• A nucleotide is inserted, shifting the frame and making it longer.

• Substitution

• One nucleotide is substituted for another nucleotide.

• Deletion

• One nucleotide is deleted from the sequence. This shifts the frame and makes it shorter.

• Insertion

A chemical or physical agent in the environment that causes a mutation is known as a _________________.

• Differentiation

• Translation

• Transcription

• Mutagen

Blocking gene expressions by means of a microRNA (miRNA) silencing complex.

• Cell Specialization

• Transcription Factors

• RNA Interference

• Differentiation

Match the following steps in mRNA synthesis.

• Portions that are cut out and discarded.

• Introns

• A region of DNA that has a specific base sequence.

• Exons

• Remaining pieces are spliced back together to form the final mRNA strand.

• Promoters

True or False: Each tRNA molecule has three unpaired bases known as the anticodon.

• True

• False