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- 1. Multiple Choice
The diagram shows the base sequence of a strand of DNA.
From left to right, what is the sequence of the complementary strand of DNA in this molecule?T G A A CA C T T GT G U U CU C T T G - 2. Multiple Choice
What happens to the DNA helix when a cell reproduces?
It partially dissolves in the cytoplasm
It unzips and makes a copy of itself
It forms a vesicle until division is complete
It forms a plasmid and doubles in size
- 3. Multiple Choice
The analysis of a DNA molecule reveals that 30% of its nucleotides are adenine. What percentage of the same DNA molecule would be expected to be guanine nucleotides?
20%
30%
40%
60%
- 4. Multiple Choice
What is the segment of DNA that contains information to synthesize a specific protein molecule?
Chromosome
Codon
Gene
RNA
- 5. Multiple Choice
Identify the complementary DNA strand to the following:
5' ATT TGC CCC 3'
3' UAA ACG GGG 3'
3' UAA ACG GGG 5'
3' TAA ACG GGG 5'
5'TAA ACG GGG 3'
- 6. Multiple Choice
A nucleotide in DNA consists of what
a sugar phosphate backbone and nitrogenous bases
a sugar, a phosphate, and a nitrogen
adenine, thymine, guanine, cytosine
a sugar and a phosphate molecule
- 7. Multiple Choice
What is DNA made of?
Sugar, Phosphate, nitrogen base
Phosphate, Adenine, nitrogen base
Thymine, Adenine, Cytomine
Phosphate, Nitrogen, Adenine
- 8. Multiple ChoiceAdenine bonds with ______________.GuanineThymineCytosineAdenine
- 9. Multiple ChoiceGuanine bonds with ______________.AdenineGuanineCytosineThymine
- 10. Multiple Choice
What are the 4 nitrogen bases?
adenine, thymine, cytoplasm, and guanine
adenine, thymine, cytosine, and guanine
adenine, thymine, cytosine, and gylcerol
adenine, thymine, cytosine, and glucose
- 11. Multiple ChoiceWhich 2 molecules forms the sides (backbone) of the DNA ladder?deoxyribose and adeninedeoxyribose and a hydrogen bondsugar and the nucleusdeoxyribose (sugar) and phosphate
- 12. Multiple ChoiceWhich organelle is DNA usually found in?cell membranevacuolechloroplastnucleus
- 13. Multiple ChoiceWhich sequence of DNA bases would pair with this partial strand
ATG TGA CAGATG TGA CAGTAC ACT GTCGTA AGT GACCAT TCA CTG - 14. Multiple ChoiceWhy is DNA important?it is very small and very complicatedit's in everythingit serves as the blueprint for traits of all living thingsbecause we eat it every day for energy
- 15. Multiple ChoiceWhat determines the code, or information, of a DNA molecule?the shape (structure) of the nitrogen basesthe order (sequence) of the nitrogen basesthe color of the nitrogen basesthe frequency (number) of nitrogen bases
- 16. Multiple Choice
order of replication
3, 2, 1, 4
2, 1, 4, 3
2, 3, 1, 4
3, 4, 1, 2
- 17. Multiple ChoiceWhat is the correct complimentary strand for the following DNA?ATCGAGTACGAGATCGAGTAGCTGTAGCTC
- 18. Multiple Choice
What does the base 'A' pair with?
A
T
C
G
- 19. Multiple Choice
What does the base 'G' pair with?
A
T
C
G
- 20. Multiple Choice
This enzyme is capable of breaking Hydrogen bonds found between the bases of DNA
Topoisomerase
DNA Helicase
DNA Polymerase
Exonuclease
- 21. Multiple ChoiceWhich of the following best describes a DNA molecule?double helixcontains ribosemade of amino acidscontains Uracil
- 22. Multiple Choice
Which phase of the cell cycle does the DNA replicate?
Metaphase
Synthesis
Prophase
Telophase
- 23. Multiple Choice
What enzyme unwinds and separates the DNA?
Primase
Polymerase
Ligase
Helicase
- 24. Multiple ChoiceThis diagram shows the cell cycle.
Which of the following activities occur in the S phase?Replication of the DNAGrowth of the cellFormation of the mitotic spindleBreakdown of the nuclear membrane - 25. Multiple ChoiceGuanine bonds with ______________.AdenineGuanineCytosineThymine
- 26. Multiple ChoiceAdenine bonds with ______________.GuanineThymineCytosineAdenine
- 27. Multiple ChoiceNitrogenous bases are joined by which type of bond?polar bondsionic bondscovalent bondshydrogen bonds
- 28. Multiple ChoiceWhich of the following units are repeatedly joined together to form a strand of DNA?amino acidsnucleotidesfatty acidspolysaccharides
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