Start
Q1
Question 1: Under appropriate conditions DNA will form a hybrid with a complementary __________.
DNA
RNA
Both DNA and RNA
None of the given
Q2
Question 2: When linked to vitamins nucleotides are structural components of several essential coenzymes, for example
coenzyme A
coenzyme B
coenzyme C
coenzyme D
Q3
Question 3: Adenosine 3-phosphate-5-phosphosulfate is the __________ donor.
Sulfate
Phosphate
Adenosine
None of the given
Q4
Question 4: The "energy carrier" ATP is an example of a(n):
deoxyribonucleoside triphosphate
di-nucleotide
ribonucleotide
ribonucleoside triphosphate
Q5
Question 5: These __________ bonds, plus the van der Waals and hydrophobic interactions between the adjacent stacked bases, stabilize the structure of the double helix.
phosphodiester
nitrogen
hydrogen
None of the given
Q6
Question 6: Nucleosomes can be packed more tightly to form a polynucleosome also called a nucleofilament or a __________ nm fiber.
Q7
Question 7: S-adenosylmethionine is a __________ group donor.
Methyl
Phosphate
Adenosine
Sulfate
Q8
Question 8: Which one of the following is true of the pentoses found in nucleic acids?
C-5 and C-1 of the pentose are joined to phosphate groups.
The bond that joins nitrogenous bases to pentoses is an O-glycosidic bond.
The pentoses are always in the β-furanose forms.
The straight-chain and ring forms undergo constant interconversion.
Q9
Question 9: which one is not correct
adenine equals the amount of thymine.
guanine equals the amount of cytosine
total amount of purines equals the total amount of pyrimidines
guanine equals the amount of thymine
Q10
Question 10: There are __________ classes of histones