DNA Replication Revision Bite (HL)

The Hershey-Chase experiment provided evidence for DNA as the genetic material. What was used to label the DNA?

• Radioactive sulphur

• Radioactive phosphorus

• Radioactive carbon

• Radioactive nitrogen

Fill in the blank: The Hershey-Chase experiment used a virus called a ___ to prove DNA as the genetic material.

• bacteriophage

• retrovirus

• adenovirus

• lentivirus

In DNA, adenine always pairs with ______.

• Cytosine

• Guanine

• Thymine

• Uracil

What is the role of histone proteins in nucleosomes?

• They degrade DNA

• They package DNA

• They replicate DNA

• They transcribe DNA.

Which base pairs with guanine in DNA?

• A) Adenine

• B) Thymine

• C) Cytosine

• D) Uracil

What is the structure formed when nucleosomes are folded into more complex structures?

• Chromosome

• Chromatin

• Gene

• Nucleotide

The DNA strands in a double helix are said to be ______.

• Parallel

• Antiparallel

• Perpendicular

• Convergent

DNA Polymerase III synthesizes a new DNA strand in which direction?

• 3' → 5'

• 5' → 3'

• 5' → 5'

• 3' → 3'

Fill in the blank: The short segments of DNA synthesized on the lagging strand are called ________ fragments.

• A) Okazaki

• B) Primase

• C) Ligase

• D) Gyrase

Which two bases are pyrimidines?

• Guanine & Adenine

• Cytosine & Thymine

• Guanine & Cytosine

• Adenine & Thymine