damage is sepaired c cell cvvle is hatesd unil the da allow defeetive cells to c
ID: 206190 • Letter: D
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damage is sepaired c cell cvvle is hatesd unil the da allow defeetive cells to contine needs muliple mutations i-s only after blood vessels I.…","-.. supply the caner says a mies nom the primary tomer and travel to differee sites in the to virus infestion tronically enough cancer cells Modern approaches toain c analysis and the use of RNA interferene questions a somatic mutations that disrupt normal cell division and de b. germline mutations that result in cell death e. somatic mutations that cause cells to die prematurely d. germline mutations that disrupt normal cell division and d L. What causes cancer? e none of the above 2. How might a carcinogen not be a mutagen as well? a. A carcinogen is always a mutagen because it will alwa in the body to a benign substance, which b. A carcinogen may be converted does not interact with DNA. c. A chemical that does not react with DNA could be converted in the boa to give rise to a derivative that does interact with DNA. d. A carcinogen never reacts with DNA, but instead alters protein folding e. all of the above a. Which protein regulates the cell cycle by monitoring the environment of each stage and making sure the previous cycle is complete? a. cyclin synthases b. cyclin-dependent kinases c. E2F d. cyclins e. p53 4. What activates cell division? a. Ras b. E2F c. growth factors d. cell surface receptors e. phosphotransferase s. Which of the following statements about oncogenes and anti -oncogenes is not true? a. Mutations in oncogenes are dominant. b. Both copies of tumor-suppressor genes must be inactivated to give rise to cancerExplanation / Answer
1. Somatic mutations that disrupt normal cell division & death, causes cancer.
2. A carcinogen may be converted in the body to a benign substance, which does not interact with DNA.
3. Cyclins are proteins that regulates cell cycle by monitoring the environment of each stage and making sure previous cycle is complete.
4. Growth factors activate cell division.
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