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Biology, Chemistry
9th
grade
DNA Structure & Function (Quiz Review)
30 questions
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- 1. Multiple Choice
What are the nucleotides made of?
Sugar, Phosphate, Nitrogenous base
Phosphate, Adenine, Nitrogenous base
Thymine, Adenine, Cytosine
Phosphate, Nitrogen, Uracil
- 2. Multiple Choice
In DNA, Adenine bonds with ______________.
Guanine
Thymine
Cytosine
Adenine
- 3. Multiple Choice
In DNA, Guanine bonds with ______________.
Adenine
Guanine
Cytosine
Thymine
- 4. 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
- 5. Multiple Choice
What are the 4 nitrogenous bases in DNA?
adenine, thymine, uracil, and guanine
adenine, thymine cytosine, and guanine
adenine, thymine, cytosine, and uracil
adenine, uracil, cytosine, and guanine
- 6. Multiple Choice
What determines the code, or information, of a DNA molecule?
the sugar and phosphate backbone
the order (sequence) of the nitrogenous bases
the color of the nitrogenous bases
the frequency (number) of nitrogenous bases
- 7. Multiple ChoiceWhich shows the correct complementary base pairing for DNA?C-A, T-GA-G, C-TC-G, U-AT-A, G-C
- 8. Multiple Choice
What does DNA stand for?
Deoxyribonucleic acid
Ribonucleic acid
Deribonucleic acid
Diribonucleic acid
- 9. Multiple Choice
All DNA nucleotides are identical except for the...
nitrogenous bases
phosphate groups
sugar
- 10. Multiple Choice
If DNA is compared to a ladder, which component of a nucleotide form the rungs (the steps) of the ladder?
nitrogenous bases
sugar molecules
phosphate groups
all of these answers
- 11. Multiple Choice
True or False? A tightly compacted strand of DNA wrapped around protein is a chromosome.
False
True
- 12. Multiple Choice
A ____ is a distinct sequence of nucleotides that codes for a particular trait.
Gene
Chromosome
Protein
All of these answers
- 13. Multiple Choice
All instructions for how organisms grow and behave are located in _______
Chromosomes
Proteins
Genes
All of these
- 14. Multiple Choice
A gene is a sequence of DNA bases that instructs the cell on how to build a _________.
Protein
Cell
Expression
DNa
- 15. Multiple ChoiceIn a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount ofcytosineguaninethymineuracil
- 16. Multiple Choice
There are 33 guanines and 24 adenines in a DNA molecule. How many cytosines are there in the molecule?
33
24
67
76
- 17. Multiple Choice
There are 33 guanines and 24 adenines in a DNA molecule. How many thymines are there in the molecule?
33
24
67
76
- 18. Multiple ChoiceWhich organelle is DNA usually found in?cell membranevacuolechloroplastnucleus
- 19. Multiple ChoiceDNA has a _____________ structure.double helixsingle strandringchain
- 20. Multiple Choice
What evidence supports the idea that all living things on Earth are related to each other?
The basic DNA code is pretty much the same for all living things
This is a false statement; there is no evidence that supports that all living things are related
All proteins are the same for all living things
- 21. Multiple Choice
Which of the following answers properly orders the terms from SMALLEST to LARGEST?
Chromosomes (smallest) → DNA → Genes → Nucleotides → Bases
Bases (smallest) → Nucleotides → DNA → Chromosomes → Genes
Bases (smallest) → Nucleotides → Genes → DNA → Chromosomes
- 22. Multiple Choice
Because DNA is about 2 m long, it must be stored as a _____ to fit in the nucleus of a cell.
chromosome
gene
protein
mRNA
- 23. Multiple Choice
If DNA is compared to a ladder, which 2 components of a nucleotide make up the sides of the ladder (often called the "backbone" of DNA)? (Select 2 answers!)
nitrogenous bases
sugar molecules
phosphate groups
all of these answers
- 24. Multiple ChoiceA process in which DNA has the unique ability to make an exact copy of itself.ReplicationTranslationTranscription
- 25. Multiple ChoiceReplicate the following strand of DNA:
AATCATGGAAATCATGGATTAGTACCTUUAGUACCUGGATAUCUA - 26. Multiple ChoiceDNA replication results in two DNA molecules,each one with two original strandseach one with two new strandseach one with one new strand and one original strandone with two new strands and the other with two original strands
- 27. Multiple Choice
Why must DNA replicate itself before a cell divides?
So that each new cell receives an equal amount of DNA
In order to make proteins
In order to make mRNA
In order to control your traits
- 28. Multiple ChoiceIf a strand reads:
3' A A A T T T C 5'
The matching strand would read...5' T T T A A A G 3'3' T T T A A A G 5'5' A A A T T T C 3'3' U U U A A A G 5' - 29. Multiple ChoiceDNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?Half of each new DNA is the old DNAThe old strand of DNA was digested, so noneThe new DNA is entirely made up of the old DNAAbout every sixth base comes from the old DNA
- 30. Multiple Choice
Which of the following sequences represents the order of replication?
3, 4, 2, 1
3, 1, 4, 2
2, 1, 4, 3
3, 4, 1, 2
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