In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine

• guanine

• thymine

• uracil

Guanine bonds with ______________.

• Adenine

• Guanine

• Cytosine

• Thymine

Which shows the correct complementary base pairing for DNA?

• C-A, T-G

• A-G, C-T

• C-G, U-A

• T-A, G-C

The building block of nucleic acids are nucleotides.  Nucleotides are composed of a sugar, a phosphate group, and a _________________ base.

• oxygen

• hydrogen

• nitrogen

• carbon

Which of the following monomers are repeatedly joined together to form a strand of DNA?

• amino acids

• nucleotides

• fatty acids

• polysaccharides

The two strands of nitrogenous bases in DNA are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Tags

NGSS.HS-LS1-1

X outlines a(n) ___________.

• amino acid

• nitrogen base 

• nucleotide

• nitrogen base pair

Tags

NGSS.HS-LS1-1

What part of the nucleotide is labled "A"

• Phosphate

• Nitrogenous Base

• Protein

• Sugar (Deoxyribose or Ribose)

Tags

NGSS.HS-LS1-1

What part of the nucleotide is labled "B"

• Phosphate

• Nitrogenous Base

• Protein

• Sugar (Deoxyribose or Ribose)

Tags

NGSS.HS-LS1-1

What part of the nucleotide is labled "C"

• Phosphate

• Nitrogenous Base

• Protein

• Sugar (Deoxyribose or Ribose)

Tags

NGSS.HS-LS1-1