Physioloy
Physiology Linder
Unit 1 Possible Essay Questions
Chapter 1
1. Describe the concept of homeostasis. Explain how negative feedback and positive feedback loops effect the homeostatic condition. Use examples to explain your answer.
Homeostasis can be described as maintaining a relatively internal environment even though the external environment is variable. Negative feedback loops effect the homeostatic condition by controlling it by bringing you back to your set point. An example of this would be blood pressure or heart rate. Positive feedback loops effect the homeostatic condition by using amplification to increase the change and stimulus. For example, labor, platelate plugs, and action potentials are all positive feedbacks loops.
2. Describe the four physiological themes discussed in the book that apply to all living organisms.
Theme 1: Structure and function are closely related: by dividing space into compartments (structure) it allows cells, tissues, organs, etc to specialize and isolate functions such as molecular interactions (function) which is the ability of individual molecules to bind to or react with other molecules.
Theme 2: Living organisms need energy: growth, reproduction, movement, homeostasis, etc all require the input of energy.
Theme 3: Information flow coordinates body functions: gene transfer from generation to generation, transcription and translation with a single organism to produce proteins, cell to cell communication involving neurotransmitters, hormones, action potentials, etc. and chemical communication where some molecules will cross the membranes and other must bind to receptors.
Theme 4: Homeostasis maintains internal stability: maintaining a relatively internal environment even though the external environment is variable.
Chapter 2
1. Explain chemical bonding in terms of covalent, ionic, and hydrogen bonds as well as discuss Van der Waals forces.
Chemical bonding involves the
Unit 1 Possible Essay Questions
Chapter 1
1. Describe the concept of homeostasis. Explain how negative feedback and positive feedback loops effect the homeostatic condition. Use examples to explain your answer.
Homeostasis can be described as maintaining a relatively internal environment even though the external environment is variable. Negative feedback loops effect the homeostatic condition by controlling it by bringing you back to your set point. An example of this would be blood pressure or heart rate. Positive feedback loops effect the homeostatic condition by using amplification to increase the change and stimulus. For example, labor, platelate plugs, and action potentials are all positive feedbacks loops.
2. Describe the four physiological themes discussed in the book that apply to all living organisms.
Theme 1: Structure and function are closely related: by dividing space into compartments (structure) it allows cells, tissues, organs, etc to specialize and isolate functions such as molecular interactions (function) which is the ability of individual molecules to bind to or react with other molecules.
Theme 2: Living organisms need energy: growth, reproduction, movement, homeostasis, etc all require the input of energy.
Theme 3: Information flow coordinates body functions: gene transfer from generation to generation, transcription and translation with a single organism to produce proteins, cell to cell communication involving neurotransmitters, hormones, action potentials, etc. and chemical communication where some molecules will cross the membranes and other must bind to receptors.
Theme 4: Homeostasis maintains internal stability: maintaining a relatively internal environment even though the external environment is variable.
Chapter 2
1. Explain chemical bonding in terms of covalent, ionic, and hydrogen bonds as well as discuss Van der Waals forces.
Chemical bonding involves the