Discuss the various aspects of cancer, such as the difference between a benign and a malignant tumor, communication
in cancer cells, metastasis, and carcinogens. What will be an ideal response?
Cancer is discussed in the “Inquiring About” box in this chapter, with descriptions of
metastasis, benign and malignancy, various types of cancers, and preventative measures.
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Which of the following is a function of pasteurization?
A. Increasing the shelf life of the product B. Killing pathogenic microorganisms C. Reducing the total microbial population D. All of the choices are correct.
A mouse gene was identified and determined to be required for formation of heart muscle. A gene with a similar sequence was identified in the human genome. What experiment could scientists do to determine if the mouse and human genes have similar functions?
A) The scientist could search the human genome for genes that encode proteins that are identical to the protein encoded by the mouse gene. B) The scientist could place the normal human gene into normal mice and see if the resulting mice are viable. C) The scientist could place the normal human gene into mutant mice to see if heart muscle forms in the mouse. D) The scientist could place the mutant mouse gene into humans to see if humans develop without heart muscle.
During the photosynthetic process, __________ diffuses into the leaf, while __________ diffuses out
of the leaf. a. carbon dioxide; oxygen b. oxygen; carbon dioxide c. oxygen; water vapor d. water vapor; carbon dioxide e. water vapor; oxygen
All coliforms are
A. enteric pathogens. B. rapid lactose fermenters. C. oxidase positive. D. fastidious. E. strains of E. coli.