DNA Structure and Enzymes

The back bone of DNA strands is made up of.....

• phosphate and sugar

• hydrogen bonds

• nucleotides

Tags

NGSS.HS-LS1-1

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Tags

NGSS.HS-LS1-1

The concept that DNA is made of two strands running in opposite directions is called:

• Antiparallel

• Semiconservative

• base pairing

• double helix

Tags

NGSS.HS-LS1-1

Together, 1, 2 and 3 make up a ___________

• deoxyribose sugar

• hydrogen bond

• nucleotide

• nitrogen base

Tags

NGSS.HS-LS1-1

What structure is labeled 2 in the image?

• deoxyribose sugar

• hydrogen bond

• nucleotide

• nitrogen base

Tags

NGSS.HS-LS1-1

Which organelle is DNA usually found in?

• cell membrane
• vacuole
• ribosome
• nucleus

Tags

NGSS.MS-LS3-1

__________ bonds form between the nitrogen bases and they are __________ bonds

• Hydrogen, strong

• Covalent,

  strong

• Hydrogen, weak

• Covalent, weak

A and G are both _______ (type of bases) because they have ____ rings.

• purines, 1

• purines, 2

• pyrimidines, 1

• pyrimidines, 2