DNA Structure and Replication Set 2

What makes up the SIDES of a DNA ladder?

• nitrogen bases

• Deoxyribose sugars & phosphates

• genes & chromosomes

• RNA

Tags

NGSS.HS-LS1-1

What makes up the rungs (center) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

Tags

NGSS.HS-LS1-1

What is DNA made up of?

• nucleotides

• cytoplasm

• RNA

• cells

Tags

NGSS.HS-LS1-1

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

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

If a DNA molecule is made up of 75% cytosine bases what percentage of the molecule will be guanine?

• 35%

• 75%

• 25%

• 50%

What is the first step in DNA replication?

• DNA unzips

• bases are added

• sugar and phosphate are added

• sugar and bases are added

What are the complementary bases that would pair with this DNA strand: CTAATGT

• GATTACA

• AGCCGTG

• CTAATGT

• TCGGCAC

The goal of DNA replication is

• to make proteins in the cell

• to divide cells

• to make an identical copy of DNA

• to fix mistakes in the DNA