5.7 MUA Biology

Who is credited with discovering the structure of DNA?

• Watson and Crick

• Crick and Franklin

• Thompson and Franklin

• Watson and Thompson

What role did Rosalind Franklin play in the discovery of DNA?

• She is one of two people credited with discovering DNA’s structure, and won a Nobel Prize

• She took an X-ray crystallography photo showing the spiral structure of DNA

• She built a 3D model that showed the twisted ladder formation of DNA

• She worked with a team at Cambridge to piece together the role of hydrogen bonds in DNA structure

All of the following are true about DNA EXCEPT:

• DNA exists in every living thing

• DNA is found in almost every cell

• DNA is found in a cell’s nucleus

• DNA contains the cell’s organelles

Tags

NGSS.MS-LS1-2

NGSS.MS-LS3-1

DNA nucleotides are made of all of the following EXCEPT:

• sugar

• phosphate

• a hydrogen base

• a nitrogen base

Match the pairs of bases in a DNA strand.

• T

• DINO

• G

• C

• DNA

• A

If one side of the DNA strand reads ATT-CGG-ATG, what does the complementary strand read? Answer in all caps and insert a hyphen every three letters.

Match the bases with their structure type.

• purines

• pluto

• cute

• cytosine and thymine

• pyrimidines

• Adenine and guanine

In your own words, describe Chargaff's Rule. Be specific about the details.

What does Chargaff's Rule state about the amount of guanine, cytosine, adenine, and thymine in DNA molecules?

• The amount of guanine is equal to the amount of cytosine

• The amount of adenine is equal to the amount of thymine

• The amount of guanine is not equal to the amount of cytosine

• The amount of adenine is not equal to the amount of thymine

If a DNA sample contains 18% guanine, what percent cytosine will it contain?

• 82%

• 36%

• 18%

• 9%