Unit 6 Lesson 1B DNA Review

What is the primary role of DNA in living organisms?

• Energy storage

• Genetic material

• Structural support

• Enzyme production

Tags

NGSS.HS-LS3-1

What are the building blocks of DNA?

• Amino acids

• Nucleotides

• Proteins

• Lipids

How are the four types of nucleotides in DNA named?

• By their sugar

• By their nitrogen base

• By their phosphate group

• By their length

What is the main component of a nucleotide that contributes to DNA's structure?

• Lipid

• Protein

• Sugar

• Water

What is the role of the phosphate group in a nucleotide?

• Provides energy

• Gives acidic properties

• Forms bonds

• Stores information

What is the significance of the "twisted ladder" description of DNA?

• It indicates DNA's flexibility

• It describes DNA's double helix structure

• It shows DNA's color

• It explains DNA's weight

What is the primary function of DNA in cells?

• Energy production

• Genetic information storage

• Protein synthesis

• Cell division

Tags

NGSS.HS-LS3-1

What is the significance of DNA being a polymer?

• It is flexible

• It is made of repeating units

• It is soluble in water

• It is a single molecule

Which nitrogen bases are classified as purines?

• Cytosine and Thymine

• Adenine and Guanine

• Adenine and Thymine

• Guanine and Cytosine

What type of bond connects the nitrogen base pairs in DNA?

• Covalent bonds

• Ionic bonds

• Hydrogen bonds

• Metallic bonds