Genetic Material Experiments Quiz

Who conducted experiments to prove that DNA was the genetic material?

• Watson and Crick

• Hershey and Chase

• Chargaff and Avery

• Franklin and Wilkins

What was used to label proteins in the Hershey-Chase experiment?

• Radioactive phosphorus (32P)

• Radioactive sulphur (35S)

• Radioactive carbon (14C)

• Radioactive nitrogen (15N)

What did Erwin Chargaff discover about the nucleotide bases?

• All bases are present in equal amounts

• Purines and pyrimidines are balanced

• Adenine is more abundant than thymine

• Cytosine is more abundant than guanine

What was the conclusion of the Hershey-Chase experiment regarding genetic material?

• Proteins are the genetic material

• DNA is the genetic material

• RNA is the genetic material

• Lipids are the genetic material

What is the significance of radioactive phosphorus (32P) in the Hershey-Chase experiment?

• It labels proteins

• It labels DNA

• It labels lipids

• It labels carbohydrates

What is the direction in which the DNA strands run due to their antiparallel nature?

• 5' → 5'

• 3' → 3'

• 5' → 3' vs 3' → 5'

• 3' → 5' vs 5' → 3'

Which type of nitrogenous base pairing is energetically unfavorable due to bases being too close together?

• Purine-Pyrimidine

• Pyrimidine-Pyrimidine

• Purine-Purine

• Adenine-Thymine

What is the structure called that consists of DNA wrapped around a core of eight histone proteins?

• Chromatin

• Chromosome

• Nucleosome

• Ribosome

What type of proteins are involved in the formation of nucleosomes?

• Enzymes

• Histone proteins

• Ribosomal proteins

• Transport proteins

What is the role of nucleosomes in DNA packaging?

• They increase gene expression levels.

• They help in DNA replication.

• They help in supercoiling the DNA.

• They break down DNA.