Biology , 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 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