Required Vocabulary – IB 12 Higher Level Physics and Physical Measurement 1. Fundamental Units – seven basic units of the SI measurement system: kilogram‚ second‚ mole‚ meter‚ ampere‚ Kelvin‚ candela. 2. Derived Units – units that are combinations of fundamental units. These combinations may or may not have a separate name. (eg. 1 kg m/s2 = 1 N) 3. Accuracy - An indication of how close a measurement is to the accepted value (a measure of correctness). 4. Precision - An indication
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Melissa Fellin 10/6/13 A.P. Psych Review Intro There are two communication systems in the brain The Nervous System and the Endocrine System Nervous System: extensive network of nerve cells that carry messages in pulses of electrical and chemical energy throughout the body. This is the network that first comes to your rescue by accelerating you heart and tensing your muscles for action. Endocrine System: a slower acting communication network that sends a follow up message that
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ions vesticular membrane neurotransmitter e) vesicles f) closes g) action potential h) presynaptic membrane i) neurotransmitter is taken up 11. The Thymus plays a key role in training and development of T-Cells/T-Lymphocytes. 12. A toxin or other foreign substance that induces an immune response in the body. 13. Annies antigens will attack the antibodies‚ she will feel no muscle movement or action potential. The
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Effects of Ach blocker- tubocurare- twitch tension declines. Blocks Ach and no muscle contraction. It is necessary for acetylcholine to bind to receptors in order for sodium ion channels to open and allow an action potential to occur in the muscle which is known as an end plate potential iii. Effects of direct muscle stimulation 2. Expected results a. Increasing amplitude- increase in twitch tension b. Increasing frequency- increase in twitch tension c. Tubocurare- decrease in twitch tension d. Direct
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Study Guide: Chapters 3 and 4 Answer the following questions—you do not need to answer in complete questions. Differentiate between potential‚ kinetic and low quality energy. Potential- Energy that is stored in an object due to its configuration Kinetic- energy an object possess due to its motion and mass. Low quality- Energy that is unorganized and do little work. How does entropy relate to the continual energy needs of organisms Entropy represents the disorder of a system which allows the
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potassium ions flow out of‚ the cell. The flow of ions causes a reversal in charges‚ with a positive charge now occurring on the interior of the cell and a negative charge on the exterior. The cell is said to be depolarized‚ resulting in an action potential causing the nerve impulse to move along the axon. As depolarization of the membrane proceeds along the nerve‚ a series of reactions start with the opening and closing of ion gates‚ which allow the potassium ions to flow back into the cell and sodium
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INTRODUCTION In hydroelectric power plant‚ turbine been used to generate power from reservoir of water. Turbine been selected by their characteristic curves based on the potential energy available in the water and the amount of power to be generated. Turbine is a type that develops torque by reacting to the pressure or weight of a fluid. The operation of reaction turbine can be describes by the Newton’s third law of motion that is for every action‚ there is an equal and opposite reaction. In this
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If we assume that the body of mass M is at rest in an inertial reference frame‚ then the total mechanical energy E of the two-body system when the bodies are separated by a distance r is the sum of the kinetic energy of the body of mass m and the potential energy of the system‚ given by Equation 14.15 E= K+U E= 1 2mv2- GMmr This equation shows that E may be positive‚ negative‚ or zero‚ depending on the value of v. However‚ for a bound system‚ such as the Earth–Sun
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CHAPTER 2: THE BIOLOGY OF MIND CHAPTER OBJECTIVES 1. Explain why psychologists are concerned with human biology. 2. Describe the structure of a neuron‚ and explain how neural impulses are generated. 3. Describe how nerve cells communicate‚ and discuss the impact of neurotransmitters and drugs on human behavior. 4. Identify the major divisions of the nervous system and describe their functions‚ noting the three types of neurons that transmit information through the system
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What is psychology? The scientific study of behaviour and the physiological and mental processes that underlie such behaviour. A profession that applies the findings of psychological research to real world problems Wilhelm Wundt First psychology lab in 1879 Main focus was on consciousness Many students established research labs in North America and Germany. G. Stanley Hall Student of Wundt for a brief time Growth of psychology in North America Structuralism Edward TitchenerTo identify
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