Nucleic Acids Quiz Flashcards
Which of these is correctly paired with its respective base pair in DNA?
a) Adenine - Uracil c) Thymine - Adenine
b) Purine - Purine d) Guanine - Uracil
c. Thymine Adenine
True or false: The nucleic acid monomer is held together by hydrogen bonds?
False
DNA and RNA differ by a single group on which carbon of ribose?
a) 2’ c) 4’
b) 3’ d) 5
a) 2
Which of these is NOT a nucleotide?
a) Thymidine diphosphate c) Uridine monophosphate
b) Guanosine triphosphate d) Adenosine
d.) Adenosine
True or false: Purines create stronger bonds with their base pairs than pyrimidines?
false
Which of these are not found in the backbone of DNA?
a) Phosphates c) Nitrogenous bases
b) Phosphodiester bonds d) Ribose sugars
c) Nitrogenous bases
During nucleic acid backbone formation, the phosphate of the ______ carbon of one
nucleotide’s ribose is bonded to the ______ carbon of another.
a) 3’ ; 5’ c) 5’ ; 3’ (The phosphates “belong” to the 5’ C)
b) 2’ ; 5’ d) 5’ ; 2’
c) 5’ ; 3’ (The phosphates “belong” to the 5’ C)
Dehydration synthesis is used for which of the following? (Select all that apply)
a) Creating deoxyribose
b) Adding additional phosphates onto a nucleotide
c) Creating phosphodiester bonds in DNA
d) Creating the bonds that hold the two strands of DNA together
b) Adding additional phosphates onto a nucleotide
c) Creating phosphodiester bonds in DNA
Which of these is deaminated to form Uracil?
a) Guanine c) Adenine
b) Thymine d) Cytosine
d) Cytosine
A particular DNA polymer contains 50 base pairs on a single strand. Out of all of the
base pairs found in this DNA molecule, 22 are cytosine. How many thymines can be
found in this set of DNA?
Total base pairs = 100
22 cytosines = 22 guanines ——-> 44 cytosines&guanines
100 total bp - 44 CG = 56 adenines&thymines
56/2 = 28 thymines
