QuestionGroup: #21 Gene expression 2
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21
The direct end result of gene expression is which of the following?
A
Amino acids
B
Translation
C
Proteins
D
Carbohydrates
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QuestionGroup: #22 Mutation
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22
Which of the following is the ways in which nucleotide mutations lead to altered proteins?
A
One nucleotide is substituted by another nucleotide, which can cause an early stop codon to be incorporated into the amino acid sequence resulting in a truncated protein.
B
One nucleotide is replaced by another nucleotide, which can change an amino acid in the protein sequence
C
Nucleotides are inserted into a nucleotide sequence causing a frameshift in the sequence.
D
All three choices may cause mutations.
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QuestionGroup: #23 Mutation 2
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23
Mutations are the result of which of the following?
A
Change in the normal nucleotide sequence in the DNA directly resulting in different carbohydrates
B
Change in the normal nucleotide sequence in the DNA directly resulting in different proteins
C
Change in the order of transfer RNA to messenger RNA so that the transfer RNA take over the role of Messenger RNA
D
Primarily an alteration in the sequence of nucleotides in the abnormal proteins
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QuestionGroup: #24 Cell division
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24
There are two major kinds of cell division. Which of the following plays a major role in promoting genetic diversity?
A
Meiosis since it causes the cells to make more daughter cells than mitosis
B
Mitosis since it causes the cells to duplicate and eventually have mutations
C
Meiosis since it causes the DNA sequences to be separated into new patterns in the daughter cells.
D
Mitosis since it essential for the ovaries in humans to separate and duplicate
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QuestionGroup: #25 Cancer
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25
Genes that slow down or stop the cell cycle are called...
A
Apoptotic genes
B
Oncogenes
C
Restriction genes
D
Tumor suppressor genes
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QuestionGroup: #26 Cancer2
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26
The common theme in the development of all cancers is...
A
Mutation
B
Evolution
C
Infection
D
Syncopation
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QuestionGroup: #27 Genetics
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27
Punnett's square is which of the following?
A
Example of all possible combinations of alleles
B
Example of all possible combinations of chromosomes
C
Example of only certain combination of alleles since some will not be expressed.
D
Example of all possible combinations of DNA
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QuestionGroup: #28 Embryo development
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28
Which of the following is the end of the cleavage phase?
A
A fetus
B
Formation of a blastocyst
C
Implantation to the lining of the uterus
D
Fewer number of cells
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QuestionGroup: #29 Development of organ system
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29
For organs to be differentiated, which of the following is the first step?
A
Stem cells trigger the development of differentiated cells
B
Tissues assemble into organ systems such as blood
C
Tissue specific genes in stem cells are triggered
D
Differentiated cells form tissues
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QuestionGroup: #30 Development and society
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30
A pregnant mother ingests a chemical which her mother said would be great for the baby. When the baby was born, it had a large head and flippers for arms. What caused this phenotype?
A
The chemicals were teratogens which influenced oxidative phosphorylation causing the changes in the phenotype.
B
The chemicals influenced the expression of different stem cells.
C
There is no way to assume the chemicals caused the phenotype since we have no data on other mothers who took this medicine. It could have been purely by chance.
D
The chemicals were teratogens which caused the baby to show early signs of evolution.
