DNA mRNA Review

Nitrogen bases make up what, on a strand of DNA?

• The deoxyribose sugar

• The phosphate

• The rungs of the ladder

• The two outside portions of the ladder

Guanine, cytosine, adenine, and thymine are

• sides of the ladder in DNA

• phosphate molecules

• nitrogen bases

Strands of tightly wound DNA are known as _______.

• Phosphates

• Nucleotides

• Chromosomes

• Sugars

Tags

NGSS.HS-LS3-1

Cystosine is always paired with ______________.

• Adenine

• Thymine

• Guanine

• It doesn't match with anything

Which is NOT a nitrogen base found in DNA?

• Adenine

• Thymine

• Guanine

• Uracil

What breaks the bond between nitrogen bases during DNA REPLICATION?

• Cytoplasm

• Hormone

• RNA

• Enzyme

How would you describe the physical appearance of a DNA molecule?

• Double helix

• Triple helix

• Long, thin rod

• Straight ladder

How do the nitrogen bases pair up during DNA REPLICATION?

• Guanine-Cytosine and Adenine-Uracil

• Guanine-Cytosine and Adenine-Thymine

• Guanine-Adenine and Cytosine-Thymine

• Guanine-Adenine and Cytosine-Uracil

What breaks the bond between nitrogen bases during DNA REPLICATION?

• Cytoplasm

• Hormone

• RNA

• Enzyme

DNA REPLICATION occurs...

• during prophase

• during cytokinesis

• during metaphase

• during interphase