Chemistry for Biologists

Nucleic acids and inheritance

1. The bonding between complementary base pairs is:
Peptide links
Van der Waal’s forces
Ester links
Hydrogen bonding
2. The following base pairs can produce complementary base pairing:
A – T
T – U
A - G
T - C
3. The sugar present in the nucleotides of DNA is:
Fructose
Glucose
Deoxyribose
Ribose
4. The type of reaction that forms the sugar-phosphate chains in DNA and RNA is:
substitution
condensation polymerisation
esterification
addition polymerisation
5. Which of the following are purine bases?
adenine and cytosine
adenine and guanine
adenine and uracil
adenine and thymine
6. The four bases in RNA are:
adenine, cytosine, thymine, uracil
adenine, guanine, thymine, uracil
adenine, guanine, cytosine, uracil
adenine, guanine, cytosine, thymine
7. Which of the following are pyrimidine bases?
adenine and thymine
cytosine and guanine
cytosine and adenine
cytosine and thymine
8. Intramolecular bonds in nucleotides are formed by:
esterification reactions
polymerisation reactions
condensation reactions
hydrolysis reactions
9. The sugars in nucleotides are:
hexoses
heptoses
pentoses
trioses
10. The three components of nucleotides are:
a sugar, a phosphate group, a nitrogen-containing base
a sugar, a phosphate group, an amino acid
glucose, a phosphate group, a nitrogen-containing organic base
glucose, a phosphate group, an ester

 

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