Module 5: Gene Expression

Term that describes turning a gene "on" so that information stored in the gene is turned into a protein product

• Gene suppression

• Gene inactivation

• Gene silencing

• Gene expression

During translation, what molecule brings amino acids to the ribosome?

• tRNA

• mRNA

• rRNA

The primary function of tRNA is to carry ______ to the ribosome, where they are used to build a protein.

Highly organized structures of DNA wrapped around proteins

• chromosomes

• ribosomes
• nucleotides

• centromeres

Tags

NGSS.HS-LS3-1

Put the steps of gene expression in the correct order.

• Transcription

• RNA splicing and modification

• Translation

Sections of DNA that carry information for a specific trait.

• Genes
• Chromosomes
• Histones

• tRNA

Tags

NGSS.HS-LS3-1

The part of mRNA that remains after splicing, and goes on to code for the final amino acid sequence of a protein.

The first step of gene expression is ​ (a)   , where DNA is copied into RNA by the enzyme ​ (b)  
The last step of gene expression is ​ (c)   , where RNA is copied into protein by ​ (d)  

• transcription
• DNA polymerase.
• translation
• ribosomes

Tags

NGSS.HS-LS1-1

What is the enzyme that carries out transcription?

• Ribosome

• RNA polymerase

• Ligase

• DNA polymerase

Answer explanation

Transcription is the first step of gene expression. In transcription, DNA is copied into RNA.

Transcription is carried out by the enzyme RNA polymerase.

Match the type of mutation to the definition

• Insertion

• Loss of one or more nucleotides from a gene

• Deletion

• One nucleotide is changed to a different type of nucleotide

• Base-pair substitution

• One or more nucleotides are placed into DNA