A man travelled a distance of 61 km is 9 hours. He travelled partly on foot at 4 km/hr and partly on bicycle at 9 km/hr. What is the distance travelled on foot?

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#Question id: 1463

#Unit 4. Cell Communication and Cell Signaling

In colorectal cancer, several genes must be mutated for a cell to develop into a cancer cell. Which of the following kinds of genes would you expect to be mutated?

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#Question id: 1464

#Unit 4. Cell Communication and Cell Signaling

Which of the following types of mutation would convert a proto-oncogene into an oncogene?

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#Question id: 1465

#Unit 4. Cell Communication and Cell Signaling

Which of the following processes do normal proto-oncogenes typically exhibit?

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#Question id: 1466

#Unit 4. Cell Communication and Cell Signaling

Which of the following functions does the product of the p53 gene carry out?

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#Question id: 1467

#Unit 4. Cell Communication and Cell Signaling

Which of the following statements correctly describes a characteristic of tumor-suppressor gene?

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#Question id: 1468

#Unit 4. Cell Communication and Cell Signaling

Why are BRCA1 and BRCA2 considered to be tumor-suppressor genes?