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- 1. Multiple Choice
Which base in RNA is replaced by uracil?
Guanine
Cytosine
Thymine
Adenine
Uracil
- 2. Multiple Choice
How many mRNA codons are illustrated below?
AUGCGAUGAGAUCGAGGACCG
3
5
7
9
21
- 3. Multiple Choice
What is the name of the enzyme that creates the mRNA copy from DNA and is also involved in the synthesis of tRNA, and rRNA?
Catalase
Lactase
Helicase
RNA Polymerase
- 4. Multiple Choice
What is the name of the sugar in the mRNA nucleotides?
Sucrose
Ribose
Deoxyribose
Glucose
Lactose
- 5. Multiple Choice
Which of the following pertain to RNA?
(Check all boxes that apply)
Messenger
Transport
Ribosome
Transfer
Ribosomal
- 6. Multiple Choice
Which of the following is attached to the transfer RNA (tRNA)?
An Amino Acid
A Ribosome
A DNA molecule
A Lil' Baby
A Cell Membrane
- 7. Multiple Choice
Which of the following is not part of protein synthesis?
replication
transcription
translation
- 8. Multiple Choice
Which characteristic distinguishes a DNA molecule from a protein molecule?
is composed of subunits
can replicate itself
is found in the cytoplasm
can be very large
- 9. Multiple Choice
Amino acids are held together by __?__ bonds.
Hydrogen Bonds
Peptide Bonds
Covalent Bonds
James Bonds
- 10. Multiple Choice
If the mRNA codon reads adenine, uracil, and guanine, which amino acid would it code for using this codon chart?
Arg- Arginine
Ser- Serine
Met-Methionine (start)
Asp- Aspartic acid
- 11. Multiple Choice
What is the basic role of mRNA?
transfer amino acids to the ribosome
transfer amino acids to the nucleus
transfer DNA message to the ribosome
transfer mRNA message to the nucleus
- 12. Multiple Choice
If the DNA code reads CCAATTGG then the tRNA (anti-codon) code would read ____________
CCAATTGG
CCAAUUCG
GGUUAACC
GGTTAACC
- 13. Multiple Choice
Since the only type of molecule that a gene can code for is a protein, how is it that a trait relating to the metabolism of carbohydrates can be influenced by genes?
enzyme proteins are broken down into carbohydrates
enzyme proteins influence carbohydrate metabolism
carbohydrates are protein molecules
carbohydrates react with proteins in the body
- 14. Multiple Choice
The model of DNA represented in the diagram was developed by
Snoop Dogg & Dr. Dre
Weismann & Lamarck
Watson & Crick
Hardy & Weinburg
Key & Peele
- 15. Multiple Choice
What is the role of the ribosome in protein synthesis?
it is where mRNA synthesis takes place
it is where DNA synthesis takes place
it is where protein synthesis takes place
it is where gene synthesis takes place
- 16. Multiple Choice
Why must the DNA strands unwind and separate before transcription can take place? (the best answer)
the nitrogen bases in the double helix need to be available to immediately accept the complementary bases from tRNA
the nitrogen bases must be exposed so that free nucleotides can pair with them
the nitrogen bases must be ready to reject any possible mutations
the nitrogen bases must be ready to exchange phosphates
- 17. Multiple Choice
Conversion of messages carried by mRNA into amino acid sequences is called___________
Replication
DNA repair
Translation
Transcription
- 18. Multiple Choice
Which of the following is considered as a start codon?
AGG
UAG
GUG
AUG
- 19. Multiple Choice
Mark the one, which is NOT a stop codon?
UGA
UAG
GGA
UAA
- 20. Multiple Choice
A researcher is analyzing a protein that is found on the plasma membrane (cell membrane). What can be concluded about the translation of this protein?
I. It was translated on a cytoplasmic ribosome
II. It involved the use of all three types of RNA
III. It involved a polymerase enzyme
II only
III only
II and III
I and II
- 21. Multiple Choice
During translation, AUG corresponds to which amino acid?
Isoleucine
Serine
Valine
Methionine
- 22. Multiple Choice
A laboratory technique called polymerase chain reaction (PCR) produces millions of copies of a DNA molecule in only a few hours. PCR is most similar to which of the following cellular processes?
mitosis
replication
transcription
translocation
- 23. Multiple Choice
A student is looking at a picture of a cell taken through a microscope. The presence of which of the following would indicate that the cell is eukaryotic?
plasma membrane
DNA
cytoplasm
nucleus
- 24. Multiple Choice
Which of the following is a reason for DNA replication in skin cells?
to produce identical daughter skin cells
to enable the skin cells to make more proteins
to allow the skin cells to adapt to a changing environment
to ensure daughter skin cells will have higher genetic diversity
- 25. Multiple Choice
Microtubules are groups of proteins that provide structure to cells and are important during cell division. Which of the following pathways produces microtubule proteins in cells?
DNA → polypeptide → mRNA → protein
DNA → mRNA → polypeptide → protein
mRNA → DNA → polypeptide → protein
mRNA → polypeptide → DNA → protein
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