Quiz on DNA and RNA

What molecule is largely responsible for determining traits in organisms?

• RNA

• DNA

• Proteins

• Carbohydrates

Who conducted experiments that showed DNA is the genetic material?

• Erwin Chargaff

• Alfred Hershey and Martha Chase

• Oswald Avery

• Frederick Griffith

What did Griffith discover when he mixed heat-killed S-strain bacteria with live R-strain bacteria?

• The mice survived

• The R-strain became deadly

• The R-strain became harmless

• The S-strain became harmless

What are Chargaff's rules related to?

• The structure of RNA

• The replication of DNA

• The function of proteins

• The base pairing in DNA

What is the shape of the DNA molecule?

• Triple helix

• Double helix

• Single helix

• Linear

Which enzyme breaks the hydrogen bonds during DNA replication?

• DNA ligase

• DNA helicase

• Primase

• DNA polymerase

What is the main difference between DNA and RNA?

• DNA has ribose

• RNA is single-stranded

• DNA contains uracil

• RNA is double-stranded

What is the process of copying DNA called?

• Translation

• Transcription

• Replication

• Transformation

What type of base pairs with adenine in RNA?

• Thymine

• Guanine

• Cytosine

• Uracil

What is the role of DNA ligase during DNA replication?

• To unwind the DNA

• To synthesize RNA primers

• To join Okazaki fragments

• To add new nucleotides