DNA Structure and Scientists

DNA is most often described as a____.

• single helix

• folded protein

• circular strand

• double helix

What type of molecule is DNA?

• carbohydrate

• lipid

• protein

• nucleic acid

What is the name of the monomer from which DNA is constructed?

• glucose

• nucleotide

• amino acids

• glycerol and fatty acids

Nucleotides consist of three parts, which of the following is NOT of the parts of a nucleotide?

• five carbon sugar

• sulfur bridge

• nitrogen base

• phosphate group

In eukaryotic cells, where is DNA found?

• cytoplasm

• endoplasmic reticulum

• cell membrane

• nucleus

Tags

NGSS.HS-LS3-1

What parts of the DNA molecule make up the sides? (select two)

• 5 carbon sugar

• nitrogen base

• hydrogen bond

• phosphate

What part of the DNA molecule make up the rungs (middle)?

• pentose sugar

• phosphate

• glucose

• nitrogen base

What type of bond holds the nitrogen bases together?

• phosphodiester bond

• hydrogen bond

• ionic bond

• peptide bond

What does DNA stand for?

• ribonucleic acid

• deoxyribonucleic acid

• amino acid

• nucleotide acid

A nucleotide is pictured below. Which of the following is represented by the blue pentagon?

• hydrogen bond

• pentose sugar

• nitrogen base

• phosphate