DNA Replication, Protein Synthesis and Mutation

At what point in the cell cycle does DNA replication occur and why?

• before a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions
• before a cell divides, to ensure that the DNA will fit into the resulting cells
• during cell division, to ensure that the DNA will fit into the resulting cells
• after a cell divides, to provide each of the two resulting cells with a complete set of DNA instructions 

Which choice describes DNA after replication has taken place?

• one molecule with two original strands and one molecule with two new strands
• two molecules, each with one original and one new strand
• two molecules, each with two new strands
•  two molecules, each with two old strands

The sequence of DNA below is part of a gene. How many amino acids are coded for by this segment? 

• 4
• 8
• 12
• 20

Tags

NGSS.HS-LS1-1

Which of the following would most likely cause a mutation?

•  the placement of ribosomes on the endoplasmic reticulum
• the insertion of a nucleotide into DNA
• the movement of transfer RNA out of the nucleus
•  the release of messenger RNA from DNA

Tags

NGSS.HS-LS3-2

 A diagram of a cellular process is shown below. Which of the following identifies the process shown at point Z?

• Translation
• Translocation
• Replication
• Transcription

Tags

NGSS.HS-LS1-1

Which of the following carries amino acids to the site of protein synthesis? 

• mRNA
• rRNA
• tRNA
• nRNA

Base your answer to the following question on the structures represented in the diagram below. What is the relationship between these three structures?

•  DNA is made up of proteins that are synthesized in the cell.
• Protein is composed of DNA that is stored in the cell.
• DNA controls the production of protein in the cell.
•  The cell is composed only of DNA and protein.

Tags

NGSS.HS-LS1-1

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Tags

NGSS.HS-LS1-1

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil