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- 1. Multiple Choice
1. Place the components in order, from smallest to largest.
1. Chromosome
2. DNA nucleotide
3. Codon
4. Gene
1-2-4-3
2-3-4-1
3-4-2-1
4-3-2-1
- 2. Multiple Choice
The main difference between the four nucleotides that make up DNA is that they have different
sugars
uracil
bonds
bases
- 3. Multiple Choice
In humans, where does DNA replication take place?
cytoplasm
nucleus
ribosome
vacuole
- 4. Multiple Choice
What are bases held together by?
weak peptide bonds
strong hydrogen bonds
weak hydrogen bonds
strong peptide bonds
- 5. Multiple Choice
A sequence of nucleotides found in the DNA of a chromosome codes for a specific protein or trait. This section of DNA is known as a(n)
allele
codon
gene
phenotype
- 6. Multiple Choice
RNA from a chipmunk is compared to RNA from a worm. Both will contain the
sugar deoxyribose and the base thymine.
sugar deoxyribose and the base uracil.
sugar ribose and the base thymine.
sugar ribose and the base uracil.
- 7. Multiple Choice
A DNA nucleotide could contain the following molecules
deoxyribose, cytosine, and a lipid
deoxyribose, thymine, and a phosphate group
ribose, uracil, and a polypeptide
ribose, adenine, and thymine
- 8. Multiple Choice
Which of the following nucleic acids contains thymine?
DNA only
mRNA only
tRNA only
All of the above
- 9. Multiple Choice
DNA is a polymer consisting of monomers known as
peptides
nucleotides
amino acids
phosphates
- 10. Multiple Choice
In nucleotides, the letters A, G, C, and T represent
phosphate groups
deoxyribose sugars
nitrogen bases
ribose sugars
- 11. Multiple Choice
The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?
DNA opens up and RNA copies it.
DNA opens up and completely unwinds to make two new molecules.
DNA opens up and each strand is used as a template for making a new strand.
RNA opens up the DNA and uses each strand as a template for a new strand.
- 12. Multiple Choice
If a portion of a messenger RNA molecule contains the base sequence A-A-U, then the corresponding anti-codon on the tRNA base sequence is
A-A-U
G-G-T
T-T-A
U-U-A
- 13. Multiple Choice
The sequence of ________________ in a DNA molecule determines the protein that will be produced.
lipids
nucleotides
proteins
sugars
- 14. Multiple Choice
During _____________, the cell uses information from messenger RNA to produce proteins.
replication
translation
transcription
meiosis
- 15. Multiple Choice
How many amino acids are coded for by the strand of mRNA shown here? Assume the reading frame begins with the first nucleotide.
A U G U A C
1
2
3
4
- 16. Multiple Choice
Which base is normally used in the synthesis (making) of RNA but not in the synthesis (making) of DNA?
Adenine
Uracil
Cytosine
Guanine
- 17. Multiple Choice
Given the sequence of DNA nucleotide bases TAGTAGTAG, give the complementary strand of mRNA produced during transcription.
ATGATGATG
AAUCGGAAC
AUCAUCAUC
TAGTAGTAG
- 18. Multiple Choice
During protein synthesis, what does mRNA do?
It delivers DNA’s instructions for making proteins to the ribosome
It constructs proteins out of random amino acids
It strings together two complementary RNA strands
It strings together two complementary DNA strands
- 19. Multiple Choice
tRNA brings amino acids to the
nucleus
ribosome
- 20. Multiple Choice
tRNA has
codons
anti codons
- 21. Multiple Choice
tRNA transfers amino acids during
transcription
translation
- 22. Multiple Choice
The step of protein synthesis that occurs in the cytoplasm is
Transcription
Translation
- 23. Multiple Choice
Contains deoxyribose sugar
DNA
RNA
- 24. Multiple Choice
Contains ribose sugar
DNA
RNA
- 25. Multiple Choice
Base pairs A-T and G-C
DNA
RNA
- 26. Multiple Choice
Base pairs A-U and G-C
DNA
RNA
- 27. Multiple Choice
Single stranded
DNA
RNA
- 28. Multiple ChoiceI am arranged as a double helix or "twisted ladder".DNARNA
- 29. Multiple Choice
A portion of DNA that is condensed and rod-like
chromosome
gene
nucleotide
codon
- 30. Multiple Choice
A portion of a chromosome that codes for a single protein
chromosome
gene
nucleotide
codon
- 31. Multiple Choice
Subunit that makes up nucleic acids
chromosome
gene
nucleotide
codon
- 32. Multiple Choice
Subunit that makes up proteins
chromosome
gene
nucleotide
amino acid
- 33. Multiple ChoiceTranslation takes place in theribosomechloroplastnucleusmitochondria
- 34. Multiple ChoiceWhere does transcription take place?nucleuscytoplasmribosome
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