What makes up the SIDES (backbones) 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 SHAPE is DNA?

• single strand

• straight ladder

• double helix (twisted ladder)

• DNA has no shape

In DNA. what base always pairs with A?

• A

• T

• C

• G

What is DNA made up of?

• nucleotides

• cytoplasm

• RNA

• cells

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Nitrogenous bases are joined by which type of bond?

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

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

Which enzyme is responsible for joining DNA fragments together? ​

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase