Get help for SCI 115 Strayer University for all week assignments and discussions. We provide assignment, homework, discussions and case studies help for all subject of Strayer University. • Suppose that someone used nanotechnology to build little robots (called “nanobots”) that could make copies of themselves. Discuss whether or not you believe the nanobots would be alive. Explain why or why not? • Go to The Economist website to read the article titled “A Game of Cat and Mouse”, dated June 3, 2010. Discuss what you believe are the main points of the article. Explain how it relates to this week’s lessons. Give examples with your response. • A person is declared to be dead upon the irreversible cessation of spontaneous body functions: brain activity, or blood circulation and respiration. However, only about 1% of a person’s cells have to die in order for all of these things to happen. Explain how a person can be dead when 99% of his or her cells are still alive, and provide examples with your explanation. • In 2005, researcher Woo-suk Hwang reported that he had made immortal stem cells from human patients.

His research was hailed as a breakthrough for people affected by degenerative diseases, because stem cells may be used to repair a person’s own damaged tissues. Hwang published his results in a peer-reviewed journal. In 2006, the journal retracted his paper after other scientists discovered that Hwang’s group had faked the data. Discuss the implications of the incident. In your brief discussion, determine if the incident shows that results of scientific studies cannot be trusted or if it confirms the usefulness of a scientific approach, because other scientists discovered and exposed the fraud. Note: Online students, please respond to one (1) of the four (4) bulleted options. Norman Pace argues that carbon is the only chemical element that can form the backbones of molecules that make up living things. Determine what Pace’s argument is and explain why he believes this. • The bonding properties of water give it certain characteristics: surface tension, capillary action, universal solvent, high specific heat, and a high heat of vaporization. Indicate three reasons why you believe these properties are important to organisms that live underwater.

Why do you feel cool when you sweat? Why do paper towels (made of cellulose, another polar molecule) absorb water? How can a water strider walk on water? • A group working at the University of California, Berkeley has developed “Nano thermometers,” little nanoparticles that can be injected into cells to measure the temperature in various places in the cell. So far, they have been used in cells growing in a culture dish. Indicate what you think the group will discover about the temperature in different parts of the cell. Discuss whether you believe it will be the same or different, and explain why. • The 1992 movie Lorenzo’s Oil recounts the story of six-year-old Lorenzo Odone and his battle with adrenoleukodystrophy (ALD), which is caused by a malfunctioning organelle called a peroxisome. A peroxisome is an organelle that ordinarily contains enzymes capable of breaking down long-chain fatty acids. In ALD, the enzyme is missing, and when long-chain fatty acids accumulate, muscle weakness, and loss of control result.

Select the organelle in the cell that is the most similar in structure and function to a peroxisome, and explain why you chose that organelle. Describe the function and structure of the organelle that you chose. Give examples of how a dietician might be able to help a person with ALD. Note: Online students, please respond to one (1) of the following four (4) bulleted items. • The breakdown of ATP releases energy, which is utilized by other reactions that require energy. Identify other examples where inventions have utilized a similar principle, where energy released during one reaction is utilized elsewhere. List three reasons why either one of the processes is more efficient than the other. • Go to one (1) of the Websites listed below to read the blog post of your choice. Discuss the main points of the blog post you chose to read. Explain how it relates to this week’s lessons.

Give examples with your response. • Go to the Dive Discover Website and review the Web page titled “Vent Biology: Introduction to Photosynthesis vs. Chemosynthesis”. Analyze the major similarities and differences between chemosynthesis and photosynthesis. Determine what you believe is the most significant step in regard to harnessing energy within each process, and explain why. • Go to The Guardian’s Website to read the article titled “GM microbe breakthrough paves way for large-scale seaweed farming for biofuels”, dated January 19, 2012. Discuss the main point of the article. Determine at least three (3) benefits of the genetically modified organism(s) described in the article. Give your opinion about what risks the genetically modified organisms pose to society, and explain how non-scientist citizens can arrive at an informed opinion in such matters. Note: Online students, please respond to one (1) of the following three (3) bulleted items. • Go to one (1) of the Websites listed below to read the article of your choice. Examine the benefits and risks this research poses to society. Indicate if you believe there are more benefits or more risks associated with this research, and give a rationale with your response.

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