Chemistry for Biologists

Nucleic acids and inheritance

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

 

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