DNA Structure and Function

What is the role of DNA in cells?

• Providing energy for cellular processes

• Determining inherited characteristics

• Regulating cell division

• Transporting materials within the cell

Tags

NGSS.HS-LS3-1

Where is DNA found in eukaryotic cells?

• Nucleus

• Cytosol

• Mitochondria

• Endoplasmic reticulum

What are the main components of a nucleotide?

• Phosphate group, sugar, and nitrogen base

• Phosphate group, lipid, and amino acid

• Carbohydrate, protein, and lipid

• Carbohydrate, lipid, and nucleic acid

Which nitrogen bases are pyrimidines?

• Adenine and guanine

• Cytosine and thymine

• Adenine and thymine

• Cytosine and guanine

The structure of DNA is called _____.

Who are the scientists credited with discovering the structure of DNA?

• Watson and Crick

• Wilkins and Franklin

• Watson, Crick, Wilkins, and Franklin

• Rosalind Franklin

What holds the two strands of DNA together?

• Phosphodiester bonds

• Hydrogen bonds

• Covalent bonds

• Ionic bonds

How many hydrogen bonds are formed between adenine and thymine?

• One

• Two

• Three

• Four

Which bases always pair together in DNA?

Select 2 correct answers.

• Adenine with guanine

• Cytosine with thymine

• Adenine with thymine

• Cytosine with guanine

What is the shape of the sugar in DNA?

• Pentagon

• Hexagon

• Octagon

• Circle