Chapter 2 BIOE

Chapter 2 BIOE - BIOE120 Chapter 2 Questions and...

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BIOE120 Chapter 2 Questions and Applications 2.0.3 Physical, chemical, and biological components of the environment interact with living things. Give examples of the physical environment of organisms. Fish and the water that they swim in is an example of an organism and its environment. According to physics the liquid environment provides greater resistance than would a gaseous one. To cope with this the body design of a fish is stream lined in its shape. Chemical properties of water are extremely important to the survival of any aquatic organism. The density of water increases as a solid and this allows ice to float. If this were not the case then ice would sink and its gradual buildup would reduce the living space available to fish. Biologically an environment can provide protection for animals that depend on camouflage for hiding and within a biological niche a role in the food chain. Application: The potential differences between environments, a physical component of a biological unit, are utilized in dialysis tubing to transport fluids as the physical body would do. 2.1.4 Give examples of ways living things have to reduce resistance in some of their functions. Resistance is the ratio of effort over flow and is the means utilized to limit the flow variable. The keyboard was developed so that people could write faster. The use of the typewriter and the many methods of letter organization are important in helping people take notes, compose letters, and communicate more efficiently. Within the body, the immune system is used to prevent the effort variable, a disease from having unlimited flow, or infection of the biological unit. The flow of blood is limited by the constraints of the vessels, allowing for nutrients and waste to be sent out and expelled from the body. Homeostasis is used to limit the flow of heat or nutrients out of the body, maintaining a level within the body that is necessary for reactions. Application: The formation and build up of a blood clot results in drastically decreased blood flow, with increased effort; resulting in a stroke or heart attack as a consequence of more resistance that can be handled. 2.2.5 Under what conditions can the rate of energy storage in a microbe be zero if the organism is incapable of generating its own energy? The rate of energy storage of a microbe can be zero if energy is readily available to the microbe from an outside source. The intake of energy from the outside source must be equivalent to the usage of energy from the microbe. Using the equation rate of stuff in – rate of stuff out + rate of stuff generated = rate of stuff stored, if the microbe cannot generate energy and nothing is stored, from simple arithmetic, rate of stuff in = rate of stuff out.
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BIOE120 Application: Kidney function of a post-op patient can be monitored by measuring the amount of fluid intake and subtracting the amount of fluid discharge, remembering to factor in anything that is generated. 2.3.6. Phase change in a biological material does not usually occur at one specific
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Chapter 2 BIOE - BIOE120 Chapter 2 Questions and...

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