1.27 Structure of DNA

Which of these identifies the part of the DNA segment labeled X?

• Nucleotide

• Phosphate group

• Sugar

• Hydrogen bond

Tags

NGSS.HS-LS1-1

What is the shape of the DNA molecule?

• Linear

• Double helix

• Triple helix

• Circular

Which of the following components are the building blocks of DNA?

• Amino acids

• Nucleotides

• Fatty acids

• Monosaccharides

What type of bond holds the two strands of DNA together?

• Covalent bonds

• Ionic bonds

• Hydrogen bonds

• Metallic bonds

A Nucleotide is shown above. What part of the Nucleotide is labelled "3"?

• Sugar

• Phosphate

• Nitrogenous Base

Answer explanation

The correct choice is Nitrogenous Base because label '3' in the Nucleotide represents the Nitrogenous Base, which is a key component of a nucleotide.