DNA Structure, Replication, Cell Cycle

Which of the following best describes a DNA molecule?

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

Tags

NGSS.HS-LS1-1

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

• cytosine
• guanine
• thymine
• uracil

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

The sugar found in DNA.

• ribose

• guanine

• deoxyribose

• helicase

The enzyme that adds nucleotides to the end of a DNA molecule is

• DNA Polymerase

• RNA Polymerase

• DNA ligase

• RNA Ligase

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

Who's work concluded that the %A=%T  and %G=%C

• Erwin Chargaff

• Rosalind Franklin

• Alfred Hershey

• Martha Chase

The term used to describe DNA Replication is:

• Semi-Conservative
• Conservative
• AntiParallel
• Dispersive

What is the complement to the DNA strand below:

ATG CCA TGT

• TAC GGT ACT

• TAC GGT ACA

• ATG GCA TTA

• ATG GCA ACA

The enzyme that unzips the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase