DNA Structure and Replication Review

The role of DNA helicase is to

• create complementary nucleotides

• unzips strands, breaking H bonds

• glues Okazaki fragments together

• coil the double helix up into the twisted form

Who is responsible for producing this image?

• Francis Crick
• James Watson
• Rosalind Franklin
• Watson and Crick

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

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

DNA is a polymer made of:

• Nucleotides
• Ribosomes
• Purines
• Pyrimidines

The term used to describe DNA Replication is:

• Semi-Conservative
• Conservative
• AntiParallel
• Dispersive

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

Which nitrogen base pairs with Guanine?

• Adenine
• Cytosine
• Thymine
• Arganine 

The bond that holds the nitrogenous bases together are WEAK bonds called:

• Hydrogen Bonds
• Nitrogen Bonds
• Carbon Bonds
• Phosphodiester Bonds

Which nitrogen base pairs with Thymine?

• Adenine
• Guanine
• Cytosine
• Arganine 

The three parts of a nucleotide are

• phosphate group, nitrogenous base, 5-carbon sugar

• phosphate group, hydrogen bond, bases

• phosphodiester bond, phosphate group, deoxyribose sugar

• DNA, chromosome, chromatin