BCH 5413: 1-4 TEST QUESTIONS
WITH ALL CORRECT ANSWERS
Does DNA move toward the negative or positive pole in gel electrophoresis? Do the
smaller or bigger fragments move faster through the gel? - Answer-Positive; smaller
As you increase the amount of micrococcal nuclease... - Answer-more and more
fragments will be brought down to smaller size.
What did Avery, McLeod, and McCartney do? - Answer-They showed that if DNA is
present, the non-pathogenic R-strain bacteria would transform into an S-strain.
What did Wilkins and Franklin do? - Answer-Using xray crystallography, they examined
the structure of DNA.
One turn of a DNA helix is angstroms. - Answer-34
Ribose differs from deoxyribose by a single
a) C
b) H
c) OH
d) P - Answer-c)
How many carbons are in purines and pyrimidines? - Answer-9 and 6
Covalent bonds are found in and hydrogen bonds in . - Answer-sugar
phosphate backbone, complimentary base pairing
How many hydrogen bonds are between thymine and adenine? - Answer-2
Name 3 characteristics of B-DNA - Answer-* Right-handed helix
* 10bp per helical turn
* Major groove wide and deep
Name 3 characteristics of A-DNA - Answer-* Right-handed helix
* 11bp per helical turn
* Major groove narrow and deep
Of all these histones, which one is part of the linker region?
a) H2A
b) H3
c) H4
d) H1 - Answer-d)
WITH ALL CORRECT ANSWERS
Does DNA move toward the negative or positive pole in gel electrophoresis? Do the
smaller or bigger fragments move faster through the gel? - Answer-Positive; smaller
As you increase the amount of micrococcal nuclease... - Answer-more and more
fragments will be brought down to smaller size.
What did Avery, McLeod, and McCartney do? - Answer-They showed that if DNA is
present, the non-pathogenic R-strain bacteria would transform into an S-strain.
What did Wilkins and Franklin do? - Answer-Using xray crystallography, they examined
the structure of DNA.
One turn of a DNA helix is angstroms. - Answer-34
Ribose differs from deoxyribose by a single
a) C
b) H
c) OH
d) P - Answer-c)
How many carbons are in purines and pyrimidines? - Answer-9 and 6
Covalent bonds are found in and hydrogen bonds in . - Answer-sugar
phosphate backbone, complimentary base pairing
How many hydrogen bonds are between thymine and adenine? - Answer-2
Name 3 characteristics of B-DNA - Answer-* Right-handed helix
* 10bp per helical turn
* Major groove wide and deep
Name 3 characteristics of A-DNA - Answer-* Right-handed helix
* 11bp per helical turn
* Major groove narrow and deep
Of all these histones, which one is part of the linker region?
a) H2A
b) H3
c) H4
d) H1 - Answer-d)
