DNA Structure and Replication Review

What kind of molecule is DNA?

• carbohydrate

• lipid

• protein

• nucleic acid

Tags

NGSS.HS-LS1-1

What does DNA stand for?

• dextrose nucleic acid

• double nucleic acid

• deoxyribonucleic acid

• dinucleic acid

Tags

NGSS.HS-LS1-1

What is the monomer (building block) of a DNA molecule?

• fatty acid

• nucleic acid

• nucleotide

• amino acid

Tags

NGSS.HS-LS1-1

What sugar is found in a nucleotide of DNA?

• glucose

• dextrose

• ribose

• deoxyribose

What makes up the "backbone" of a single DNA strand?

• phosphate and sugar

• sugar and nitrogenous base

• phosphate and nitrogenous base

• ribose and deoxyribose

Tags

NGSS.HS-LS1-1

What kind of bonds help hold together the sugar-phosphate backbone of a DNA strand?

• covalent bonds

• hydrogen bonds

• ionic bonds

What kind of bonds hold together the nitrogenous bases at the center of the double helix structure?

• covalent bonds

• hydrogen bonds

• ionic bonds

Tags

NGSS.HS-LS1-1

What are the correct base pairs?

• A and G, C and T

• A and C, G and T

• C and G, A and T

• A and A, G and G, C and C, T and T

Tags

NGSS.HS-LS1-1

At what stage in the cell cycle does DNA replicate?

• prophase during cell division

• S phase during interphase

• G1 phase during interphase

• telophase during cell division

What is the purpose of DNA replication?

• the cell is prepared for cell division

• the cell can destroy the original copy

• the cell can send the new copies out of the cell

• the cell no longer needs to divide