Biology Section 1.2 - DNA Discovery, Structure, and Origin

Which of the following best describes a DNA molecule?

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

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Tags

CCSS.RL.9-10.9

CCSS.RL.5.1

CCSS.RL.4.1

CCSS.RI.3.5

Chargraff's Rule says that

• Adenine will be equal to Thymine
• Cytosine will be equal to Thymine
• Uracil will be equal to Guanine
• Adenine will be equal to Cytosine

Franklin used x-ray crystallography to determine the shape of the DNA molecule is

• a cloverleaf
• a braided rope
• a pleated sheet
• a twisted ladder

Which scientist(s) determined that viruses contain DNA?

• Avery & McLeod

• Watson & Crick

• Griffith & Franklin

• Hershey & Chase

What process did Griffith discover using mice and altered forms of the pneumonia bacteria?

• transcription

• mutation

• transformation

• translation

Who discovered that the genetic material in a bacteriophage was DNA?

• Hershey & Chase

• Griffith

• Avery

• Watson & Crick

Who developed the double-helix model of DNA?

• Watson & Crick

• Avery

• Hershey & Chase

• Franklin

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

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds