Molecular Genetics Quiz
Preview:
The process of using an mRNA to make a protein is called
A. Replication
B. Transcription
C. Translation
D. Cell Division
Which of the following processes do normal proto-oncogenes typically exhibit?
A. They normally suppress tumor growth.
B. They enhance tumor growth.
C. They stimulate normal cell growth and division.
D. They are underexpressed in cancer cells.
Transcription takes place in the
A. cytoplasm
B. chloroplast
C. nucleus
D. mitochondria
Which of the following enzymes is NOT needed in replication?
A. DNA ligase
B. RNA primase
C. DNA polymerase III
D. RNA polymerase
The replication of DNA is…
A. conservative
B. dispersive
C. semi-conservative
D. random
Translation occurs in the:
A. office
B. cytoplasm
C. nucleus
D. cell membrane
Which of the following information or processes does gene therapy require?
A. the ability to introduce the normal allele into the patient
B. the knowledge and availability of the defective gene but not the normal allele
C. the ability to express the introduced gene at any time in the tissue site within the patient
D. the ability to introduce a defective allele into a patient
HISTORY: Discovered that A and T bond together and C and G bond together…
A. Watson and Crick
B. Rosalind Franklin
C. Fredrick Griffeth
D. Erwin Chargaff
Adenine bonds with ______________.
A. Guanine
B. Thymine
C. Cytosine
D. Adenine
STRUCTURE: Nucleotides monomers are made up of a sugar, a phosphate, and a:
A. nitrogenous base
B. nucleic acid
C. cholesterol
D. fatty acid
A small circular piece of DNA found in bacteria are called …
A. recombinants
B. vectors
C. plasmids
D. prokaryotes
In gel electrophoresis ….
A. 15N is needed to weigh down the DNA samples
B. DNA molecules move towards the negative pole
C. larger molecules travel faster
D. smaller DNA fragments travel faster
What amino acid is represented by the codon UUA?
A. Phenylalanine
B. Tyrosine
C. Leucine
D. Stop codon
A codon is to mRNA as an anti-codon is to …
A. DNA
B. an amino acid
C. rRNA
D. tRNA
Humans have 23 pairs of chromosomes, and chimps have 24 pairs of chromosomes. What is the most likely explanation for these differences in human and chimp genomes?
A. At some point in evolution, human and chimp ancestors reproduced with each other.
B. In the evolution of chimps, new adaptations resulted from additional chromosomal material.
C. The common ancestor of humans and chimps had 24 pairs of chromosomes. During human evolution, two human chromosomes fused end to end.
D. Errors in mitosis resulted in an additional pair of chromosomes in chimps.
ATTTGAGCC- Original
ATTGAGCC – Mutated
The example above is an example of a
A. Insertion- Frameshift
B. Deletion- Substitution
C. Deletion -Frameshift
D. All of the above
STRUCTURE: Which 2 molecules form the sides of the DNA ladder?
A. deoxyribose and adenine
B. deoxyribose and a hydrogen bond
C. sugar and the nucleus
D. deoxyribose (sugar) and phosphate
A DNA molecule made from 2 different sources is called …
A. recombinant DNA
B. nuclear DNA
C. modified DNA
D. mutant DNA
How many amino acids could be coded using the sequence 5’AUGCCCGUA3′
A. 1
B. 2
C. 3
D. 4
Which of the following is not a post-transcriptional modification of mRNA?
A. addition of poly-A tail
B. addition of 5′ cap
C. removal of introns
D. removal of exons
Cytosine makes up 40% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?
A. 10%
B. 20%
C. 40%
D. 80%
Any change in the sequence of DNA is…
A. transgenic shift
B. Single Genotype
C. Monohybrid Trait
D. Mutation
Which of the following is a palindromic sequence?
A. GGCCCG
B. AATGGC
C. AACGTT
D. CCUTGG
The two strands in a DNA molecule are held together by …
A. hydrogen bonds
B. phosphodiester bonds
C. covalent bonds
D. ionic bonds
Liver cells differ from skin cells mainly because they…
A. have unique ribosomes.
B. use different genetic codes.
C. contain different genes.
D. express different genes.
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