Genetic Code

Before DNA was discovered, in which materials did scientists think the genetic material was stored?

• proteins

• carbohydrates

• lipids

• nucleic acids

What do scientists call the twisted zipper shape of DNA?

• double helix

• sphere

• helix

• double sphere

Which two scientists in London that used X-rays to study DNA?

• Maurice Wilkins

• Francis Crick

• James Watson

• Rosalind Franklin

Which two scientists built a model of DNA?

• Maurice Wilkins

• Francis Crick

• James Watson

• Rosalind Franklin

A molecule made of a nitrogen base, a sugar, and a phosphate group is called:

• proteins

• DNA

• nucleotides

• RNA

What are the four nitrogen bases?

• uracil (U), cytosine (C), thymine (T), guanine (G)

• adenine (A), uracil (U), thymine (T), guanine (G)

• adenine (A), cytosine (C), uracil (U), guanine (G)

• adenine (A), cytosine (C), thymine (T), guanine (G)

What does DNA stand for?

• Deoxyribosenucleic acid

• Deribosenucleic acid

• Deoxyribose

• Nucleic acid

What was Friedrich Miescher's contribution to the discovery of the genetic code?

• He created the first photograph of the structure of DNA.

• He discovered how the DNA bases pair together.

• He created the first accurate model of DNA's structure.

• He extracted and observed DNA from white blood cells.

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-LS3-1

NGSS.HS-LS1-1