What is an oncogene? 1. a cellular protein whose gene is mutated to stimulate uncontrolled cellular growth, 2. a cellular gene coding for reverse transcriptase, 3. cellular proteins with important regulatory functions, 4. cellular proteins that are similar to viral oncogenes a) 1 b) 2 c) 3 d) 4 e) both 3 and 4 are correct
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An oncogene is a gene that has the potential to cause cancer. In tumor cells, these genes are often mutated or expressed at high levels. So, option 1 is correct. Show more…
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An oncogene is a) a viral gene with no relation to the host cell's genes. b) a mutated form of a proto-oncogene. c) a bacterial gene that causes cancer in the host. d) always seen in human cancer cells. e) a gene that turns off cellular reproduction.
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In both eukaryotes and prokaryotes, gene expression can be regulated at the level of: a) transcription b) translation c) mRNA splicing d) All of the above e) transcription and translation only Which of the following is the least likely mechanism to convert a proto-oncogene to an oncogene? a) gene amplification b) point mutation within the gene c) point mutation in the promoter or enhancer regions d) histone acetylation e) chromosome translocation
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Which of the following statements is true? a. The gene product of a proto-oncogene inhibits the cell cycle. b. Proto-oncogenes are mutant versions of oncogenes that cause cancer. c. When mutated tumor suppressor genes lose their function, cancer may result. d. When tumor suppressor genes mutate, they become oncogenes. e. All of these are correct.
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