BIO 214 Uwec Exam 1 Study Guide
Solutions
Living things must use ____ to maintain a complex level of organization. - ANSWER-energy
Living things must exchange materials with their ____? - ANSWER-Environment
What does metabolism due? - ANSWER-Breaks down food to obtain energy
Living things must...
An organ system is? - ANSWER✔✔-A group of organs that perform a collective function
A single, completely functional living individual is? - ANSWER✔✔-Organismal
A body internal environment maintained within limits to establish equilibrium is known as? -
ANSWER✔✔-Homeostasis
How is homeostasis maintained? - ANSWER✔✔-Feedback mechanisms
Loss of homeostasis is often the cause of ? - ANSWER✔✔-sickness or death
The bodys response to negate the change or reverse the change of homeostasis is referred to as ? -
ANSWER✔✔-Negative feedback.
A thermostat is an example of ____ feedback? - ANSWER✔✔-thermostat
How is body temperature regulated? - ANSWER✔✔-vasodilation
Vasoconstriction
Negative feed back usually fluctuates around a ___? - ANSWER✔✔-Set point
Positive feedback occurs when the body detects a physiological change and responds by ____ the
original change. - ANSWER✔✔-Enhancing
An analogy of positive feedback could be? - ANSWER✔✔-A car accelerating away from a stop signal
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