DNA Structure & Replication

A monomer of DNA is called a(n)

• Monosaccharide
• Amino Acid
• Triglyceride
• Nucleotide

Which of the following best describes a DNA molecule?

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

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

• cytosine
• guanine
• thymine
• uracil

DNA is found as both

• Long double strands coiled around histones

• As a model sitting on a science teachers desk

• Circular loops that are not bound to a protein (single celled organisms)

• In our chromosomes

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

A five-carbon sugar found in DNA.

• ribose
• guanine
• deoxyribose
• helicase

DNA polymerase is a(n)

• lipid
• enzyme
• sugar
• starch

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

This is a small section of older DNA associated with the lagging side and helps fill gaps in the DNA structure

The enzyme that unzips the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase