Molecular Biology Quiz

Can RNA be changed back into DNA?

• Yes, through reverse transcription

• No, it is not possible

• Yes, through translation

• No, only DNA can be changed to RNA

What are nucleotides?

• Building blocks of DNA and RNA

• Proteins that bind to DNA

• Enzymes that cut DNA

• Lipids that store energy

What does 5’ to 3’ mean in DNA structure?

• Direction of DNA synthesis

• Type of DNA mutation

• Location of DNA in the cell

• Shape of the DNA molecule

What are restriction enzymes?

• Proteins that cut DNA at specific sites

• Enzymes that replicate DNA

• Proteins that bind to RNA

• Enzymes that synthesize proteins

What is another name for restriction enzymes?

• Molecular scissors or endonucleases

• DNA ligase

• RNA polymerase

• Protein synthesizers

Tags

NGSS.HS-LS3-2

Match the following enzymes with their functions.

• RNA polymerase

• Joins DNA fragments together

• Restriction enzyme

• Replicates DNA strands

• Ligase

• Synthesizes RNA from DNA

• DNA polymerase

• Cuts DNA at specific sites

How do restriction enzymes recognize where to cut DNA?

• By identifying specific DNA sequences

• By binding to RNA molecules

• By detecting protein structures

• By measuring DNA length

What is the function of recombinant DNA technology?

• To combine DNA from different organisms

• To replicate DNA strands

• To synthesize proteins

• To degrade RNA molecules

Why are plasmids important in genetic engineering?

• They can carry foreign DNA into cells

• They are the main source of cellular energy

• They synthesize proteins

• They degrade unwanted DNA

What is the main purpose of using ligase in DNA technology?

• To join DNA fragments together

• To cut DNA at specific sites

• To replicate DNA strands

• To synthesize RNA from DNA