Biology Help, I put on extra points.


Two researchers, Maurice Wilkins and Rosalind Franklin, used X-ray crystallography to make pictures of DNA such as the one seen to the right. The picture shows an X-ray diffraction pattern of DNA. What does this type of image help show about DNA?

DNA is helical shaped

DNA is very large

DNA contains deoxyribose


Who discovered the structure of DNA and won a Nobel Prize for the discovery?

Francis Crick and James Watson

Frederick Griffith


In DNA, what nitrogen base would equal the amount of guanine ?

Guanine

Adenine

Cytosine


If one strand of DNA has the nitrogenous bases AACTG, what would the complementary strand of DNA look like?

TTGAC

AACTG

AACDC


Which of the following is NOT the primary function of DNA in cells?

Store genetic information

copy and pass on genetic information

serve as a template for making long spiral carbohydrates


What is different about every nucleotide of a DNA molecule?

the deoxyribose sugar

the phosphate group

the nitrogen bases