DNA and the Genetic Code

Which numbered components represent the sugar-phosphate backbone?

• 1 & 2

• 2 & 3

• 3 & 4

• 1 & 3

Tags

NGSS.HS-LS1-1

Which numbered component represents deoxyribose sugars?

• 1

• 2

• 3

• 4

Which numbered component represents nitrogen bases?

• 1

• 2

• 3

• 4

Which numbered component represents a complete nucleotide?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS1-1

Which of the following components is found in DNA, but not in RNA?

• Uracil

• Phosphate

• Adenine

• Deoxyribose

Most of a person’s physical traits are determined by the genetic code. Which components of DNA are referred to as the genetic code?

• Phosphate groups

• Deoxyribose sugars

• Nitrogenous bases

• Hydrogen bonds

Tags

NGSS.HS-LS1-1

Which of these make up the primary link between a gene and the expression of a trait?

• proteins

• sugars

• lipids

• vitamins

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

In DNA, which of the following determines the traits of an organism?

• Amount of adenine

• Number of sugars

• Sequence of nitrogen bases

• Strength of hydrogen bonds

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The picture shows an x-ray diffraction of DNA. The x-ray diffraction of DNA led to the idea that the structure of DNA is in the form of —

• globular proteins

• beta sheets

• a double helix

• polypeptide chains

Tags

NGSS.HS-LS1-1

The information in DNA molecules is coded by using the –

• angle of rotation in the helix

• sequence of the sugars in the backbone

• order of nitrogen bases

• type of sugar in each nucleotide