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21 Cards in this Set
- Front
- Back
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Different cells have different functions because |
Different genes are switched on and off in each type of cell |
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Cells in a multicellular organism may regulate gene expression in a distant cell. An example of this secretion is |
Hormones |
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What kind of somatic cell gene mutations can frequently lead to the first stages of cancer? |
Mutations in genes that regulate cell division |
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All your cells contain proto-oncogenes, which can change into cancer-causing genes. Why do cells possess such potential time bombs? |
Proto-oncogenes are necessary for normal control of cell division |
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Which of the following would most likely lead to cancer? |
Mutations in proto-oncogenes and inactivation of a tumor-suppressor gene |
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Most mutagens are carcinogens. This is because |
Both bring about cancer causing dna changes |
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How is it that the cells in different body tissues are able to perform different functions? |
The cells exhibit different patterns of gene expression. |
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While examing a human cell that finctions normally, you determine that is has 45 functional chromosomes and one chromosome that is almost completely inactive. You immediately decide that it is very likely that this cell |
Came from a normal human female |
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The "master control genes" that regulate other genes and determine what body parts will develop in which locations are called |
Homeotic genes |
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Which of the following cells is least differentiated? |
Embryonic stem cells |
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What name is given to a gene that causes cancer? |
Oncogene |
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Many proto-oncogenes regulate |
Cell division |
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If you were working for a pharmaceutical company trying to develop anticancer drugs, what biological process would be the best target to investigate? |
Mitosis |
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Data suggests that the normal version of brca1 functions as a |
Tumor-suppressor gene |
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Which of the following is the most recent example of an evolutionary change in populations? |
The development of pesticide-resistant insects. |
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The relationship of the genome to an organism is the same as that of the blank to a population |
Gene pool |
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To help prevent the proliferation of antibiotic resistant bacteria you should |
Take the full course of any antibiotics your doctor has prescribed |
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According to current evolutionary theory, which of the following is true? |
Populations are the units of evolution. |
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Which of the following is an example of natural selection that has been seen in our lifetime? |
The evolution of antibiotic resistant bacteria |
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A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than individuals with other characteristics is called |
Natural selection |
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Natural selection can be defined as |
A process in which organisms with certain inherited traits are more likely to survive and reproduce than individuals with other traits |
