Which of the following is a correct complementary base pair?

• Guanine-Thymine

• Guanine-Guanine

• Adenine-Cytosine

• Cytosine-Guanine

The diagram shows a portion of a DNA molecule. The base sequence of the unlabeled strand to complete the strand from top to bottom is

• G-A-G-T

• C-U-C-A

• T-C-T-G

• G-A-G-A

Tags

NGSS.HS-LS1-1

What is the name of the sugar in DNA?

• deoxyribosomose
• deribose
• deoxyribose
• oxyribose

Chargaff's rule states that A=T and C=G.

• True

• False

What is the scientific name for the shape of DNA?

• protein molecule

• a ladder

• double helix

The process by which a DNA molecule is copied is called _______________.

• binary fission

• duplication

• DNA replication

Genetic variation is based on the order of the _______ in the DNA molecule.

• sugar group

• nitrogen bases

• hydrogen bonds

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the components that make up a nucleotide?

• adenine, thymine, guanine, cytosine

• deoxyribose sugar, a phosphate group, and a nitrogen base

• hydrogen bonds

Who discovered DNA?

• James Francis and Watson Crick

• James Watson and Francis Crick

• James Watson and Francis Clark

How many strands does a DNA molecule have?

• one (1)

• two (2)

• three (3)