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- 1. Multiple Choice
The nucleus contains DNA. Which statement BEST describes how DNA controls the working of the cell?
It codes for proteins.
It inhibits division of cells.
It helps in energy transformation.
It regulates traffic in and out of the cell.
- 2. Multiple Choice
DNA molecules contain the genetic information that determines the characteristics of a living organism. How do DNA molecules express the genetic information they contain?
by breaking down proteins within the cell
by directing the process of protein synthesis
by regulating the storage of cellular proteins
by controlling the movement of protein molecules
- 3. Multiple Choice
Which part of a DNA molecule represents encoded information?
phosphate
sugar
guanine
hydrogen bond
- 4. Multiple Choice
What is the complimentary base of adenine in DNA?
thymine
cytosine
guanine
uracil
- 5. Multiple Choice
What aspect of the DNA molecule encodes hereditary information concerning an organism's traits?
the molecular mass
the sequence of base pairs
the distribution of electrical charges
the folded three-dimensional shape
- 6. Multiple Choice
During replication, the DNA sequence ACT results in which sequence on the new strand?
ACT
TCA
TGA
UGA
- 7. Multiple Choice
How is the DNA sequence AATTA replicated in a new strand during semi conservative replication?
AATTA
AATAA
TTATT
TTAAT
- 8. Multiple Choice
A single-stranded sequence of DNA is TAC CGC AAG. Which series represents the complimentary strand of DNA?
CGT TAT GGA
ATG GCG TTC
GCA ATA CCT
AUG GCG UUC
- 9. Multiple Choice
A DNA strand undergoing replication contains the bases TACGTT. Which complimentary strand does it produce?
AUCGAA
ATGCAA
ATCGAA
AUCGTT
- 10. Multiple Choice
All organisms contain DNA and RNA. What are the subunits of DNA and RNA?
simple sugars
amino acids
carbohydrates
nucleotides
- 11. Multiple Choice
Which biomolecules are found in all organisms?
glucose, maltose, fructose, sucrose
adenine, cytosine, thymine, guanine
chlorophyll, cytosine, thymine, guanine
cholesterol, phospholipid, cellulose, gibberellin
- 12. Multiple Choice
Dr. Tanaka discovered a new virus. The virus has a single strand of a nucleic acid, but she does not know if it is DNA or RNA. After running tests, she concludes that it is DNA. Which of the following would lead her to that conclusion?
It contains uracil.
It contains adenine.
It contains thymine.
It contains cytosine.
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