Gene Expression

The enzyme that unzips DNA at a single gene to start transcription is called _____.

• Histone
• RNA polymerase
• Helicase
• Ribosome
• Lactase

A long chain of amino acids bonded together that usually make up part of a protein.

• Histone
• Polypeptide
• Helicase
• Ribosome
• Lipid

Tags

NGSS.HS-LS1-6

The idea that DNA is used to make RNA which then is used to make protein.

• Central Dogma
• Transcription
• Translation
• Polymerase
• Heredity

Which of the following is NOT a definition of a gene?

• A sequence of DNA that codes for a protein
• A sequence of DNA that controls the expression of a trait
• A factor that is passed from parent to offspring
• A chemical that adds complementary nucleotides along one strand of DNA

Tags

NGSS.HS-LS1-1

What mutation (change in a nitrogen base) would cause the code for the amino acid tyrosine to become the code for a STOP?

• U A C to U A A
• U A C to G A C
• U A U to C A U
• A U G to U A G

The sequence below is one side of a DNA strand. Which sequence shows the matching strand that would be the other side of the DNA molecule? A T G A A C T T C G A A T A G

• T A C T T G A A G C T T A T C
• A U G A A C U U C G A A U G
• U A C U U G A A G C U U A U C
• G A T A A G C T T G T T C A T
• C T A T T C G A A C A A G T A

The sequence below is the active strand of a DNA molecule that is the template for making RNA. Which sequence below shows the RNA strand that would be made by pairing with this? A T G A A C T T C G A A T A G

• U A C U U G A A G C U U A U C
• T A C T T G A A G C T T A T C
• C U A U U C G A A G U U C A U
• G A T A A G C T T G T T C A T
• C T A T T C G A A C A A G T A

The sequence below is from an mRNA molecule. Which of the following mutations would have the biggest consequence? (cause the most differences in the protein) A U G C G A A G G U A C U A A

• The third A is changed to a C
• The first C is changed to a U
• The second C is changed to a U
• The second to the last A is changed to a G

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2

The sequence below is from an mRNA molecule. Use the wheel to determine the correct amino acid sequence that this would code for. A U G A A C U U C G A A U A G

• Methionine, Asparagine, Phenylalanine, Glutamic acid, Stop
• Aspartic acid, Lysine, Leucine, Glutamine, Valine
• Methionine, Threonine, Proline, Glycine, Stop
• Methionine, Histidine, Arginine, Tyrosine, Stop

Tags

NGSS.HS-LS1-1

This diagram shows an mRNA (letter B) leaving the nucleus (A). The bottom half shows the same mRNA (G) at the ribosome (C). What is the structure indicated by letter D?

• codon
• intron
• ribosome
• tRNA
• mRNA

Tags

NGSS.HS-LS1-1