DNA - Structure

Erwin Chargaff's rule of base pairing states that:

• adenine pairs with thymine and guanine pairs with cytosine

• adenine pairs with guanine and thymine pairs with cytosine

• purines pair with pyrimidines

• pyrimidines pair only with pyrimidines

Thymine, adenine, guanine, cytosine, and uracil are classified as:

• sugars

• codons

• nitrogen bases

• nucleotides

What is the backbone of this DNA molecule made of?

• sugars

• nitrogen bases

• sugar and phosphate

• sugar and nitrogen bases

What type of bonds hold together nitrogen bases?

• water bonds

• covalent bonds

• peptide bonds

• hydrogen bonds

Using the bases on the template strand of DNA, what are the new complimentary bases for replication? Template: AGTCA

• AGTCA

• TCAGT

• UCAGU

• TCUGT

DNA is an acronym for _____

• Diphosphorus Nucleic Acid

• Ribose Nucleic Acid

• Deoxyribonucleic Acid

• Deoxyribonucleic Acetate

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Tags

NGSS.HS-LS1-1

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate