Exam 2-Molecular Genetics-Multiple Choice Exam
Questions with Correct Answers
1. two long chains of deoxynucleotides correct answers: DNA
2. DNA components correct answers: deoxyribose which has phosphate group attached to 5'
carbon and nitrogenous bases attached to 1' carbon
3. nitrogenous bases (DNA) correct answers: adenine, guanine, cytosine, thymine
4. complementary base pairs (DNA) correct answers: correct answers: adenine-
thymine, cytosine-guanine
5. two chains that
make up the DNA double helix are correct answers:
antiparallel
6. DNA replication takes place during where? correct answers: synthesis of
interphase
7. unwinding (DNA) correct answers: enzyme action- breaks hydrogen bonds that hold
complementary base pairs together, unzipping DNA double helix
8. pairing (DNA) correct answers: free deoxynucleotides in nucleoplasm form hydrogen bonds
with deoxynucleotides on each template to create complementary base pairs
9. joining (DNA) correct answers: DNA attached to the template joined together by covalent bonds to
form a daughter strand that is complementary to the parent template
10. semi-conservative replication (DNA) correct answers: each replicated DNA
molecule consists of 1 original "parent" stand plus 1 newly synthesized "daughter" strand
11. mutations (DNA) correct answers: errors passed on to next generation
12. nitrogenous bases for RNA correct answers: adenine, guanine, cytosine, uracil
13. RNA is composed of correct answers: correct answers: 1 chain of
ribonucleotides
14. RNA can exist as a long, correct answers:
single strand
15. mRNA correct answers: carries coded genetic info from nucleus to ribosomes in
cytoplasm
16. rRNA correct answers: holds ribosomal subunits together during protein synthesis
17. tRNA correct answers: binds to specific amino acids in cytoplasm and delivers it to a ribosome
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Questions with Correct Answers
1. two long chains of deoxynucleotides correct answers: DNA
2. DNA components correct answers: deoxyribose which has phosphate group attached to 5'
carbon and nitrogenous bases attached to 1' carbon
3. nitrogenous bases (DNA) correct answers: adenine, guanine, cytosine, thymine
4. complementary base pairs (DNA) correct answers: correct answers: adenine-
thymine, cytosine-guanine
5. two chains that
make up the DNA double helix are correct answers:
antiparallel
6. DNA replication takes place during where? correct answers: synthesis of
interphase
7. unwinding (DNA) correct answers: enzyme action- breaks hydrogen bonds that hold
complementary base pairs together, unzipping DNA double helix
8. pairing (DNA) correct answers: free deoxynucleotides in nucleoplasm form hydrogen bonds
with deoxynucleotides on each template to create complementary base pairs
9. joining (DNA) correct answers: DNA attached to the template joined together by covalent bonds to
form a daughter strand that is complementary to the parent template
10. semi-conservative replication (DNA) correct answers: each replicated DNA
molecule consists of 1 original "parent" stand plus 1 newly synthesized "daughter" strand
11. mutations (DNA) correct answers: errors passed on to next generation
12. nitrogenous bases for RNA correct answers: adenine, guanine, cytosine, uracil
13. RNA is composed of correct answers: correct answers: 1 chain of
ribonucleotides
14. RNA can exist as a long, correct answers:
single strand
15. mRNA correct answers: carries coded genetic info from nucleus to ribosomes in
cytoplasm
16. rRNA correct answers: holds ribosomal subunits together during protein synthesis
17. tRNA correct answers: binds to specific amino acids in cytoplasm and delivers it to a ribosome
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