Electricity is generated by the movement of charged particles, in which like charges ___________ one another and opposite charges _________ one another.a) repel, repel b) repel, attractc) attract, repeld)repel, repel

Electricity is generated by the movement of charged particles, in which like charges ___________ one another and opposite charges _________ one another.a) repel, repel b) repel, attractc) attract, repeld)repel, repel

Electric charge is measured in ________________Electric current is measured in _______________Electric power is measured in ________________Electric resistance is measured in _____________Electric potential difference is measured in ________.

Electric charge is measured in CoulombsElectric current is measured in amperesElectric power is measured in wattsElectric resistance is measured in ohms (Ω)Electric potential difference is measured in volts.

How is electric power calculated?Provide1. The a mathematical equation in words,

_________________________________2. The a mathematical equation in one letter symbols,

_________________________________3. And the mathematical equation in units. _________________________________

How is electric power calculated?Provide1. The a mathematical equation in words,

Power = Current X Voltage2. The a mathematical equation in one letter symbols,

P= IV3. And the mathematical equation in units.

watts = amperes X volts

What is Ohm’s Law?Provide1. The a mathematical equation in words,

_________________________________2. The a mathematical equation in one letter symbols,

_________________________________3. And the mathematical equation in units. _________________________________

What is Ohm’s Law?Provide1. The a mathematical equation in words,

Volts = Current X Resistance2. The a mathematical equation in one letter symbols,

V= IR3. And the mathematical equation in units.

volts = amperes X ohms

In a battery-powered circuit, because they have a _______ charge, electrons flow from the ______ to the ______.a) positive; anode; cathodeb) positive; cathode ; anode c) negative; anode; cathoded) negative; cathode ; anode

In a battery-powered circuit, because they have a _______ charge, electrons flow from the ______ to the ______.a) positive; anode; cathodeb) positive; cathode ; anode c) negative; anode; cathoded) negative; cathode ; anode

According to Ohm’s Law, if resistance between two points increases, current will:a)decreaseb)increasec)remain the same.d)become zero.

According to Ohm’s Law, if resistance between two points increases, current will:a)decreaseb)increasec)remain the same.d)become zero.

A circuit in which the path is complete, with no gaps is called a(n) _________________ because the _________ can flow.a)open circuit, currentb)open wire, resistancec)closed circuit, currentd)closed system, resistance

A circuit in which the path is complete, with no gaps is called a(n) _________________ because the _________ can flow.a)open circuit, currentb)open wire, resistancec)closed circuit, currentd)closed system, resistance

Imagine a simple series circuit with one 1.5V battery and one bulb. When the 1.5V battery is replaced with a 3V battery a)the bulb gets brighter b)the bulb gets dimmer c)the bulb stays at the same level of brightness

Imagine a simple series circuit with one 1.5V battery and one bulb. When the 1.5V battery is replaced with a 3V battery a)the bulb gets brighter b)the bulb gets dimmer c)the bulb stays at the same level of brightness

In a given circuit, increasing the length of the wire has which effect?a)Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or current

e)B and C

In a given circuit, increasing the length of the wire has which effect?a)Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or current

e)B and C

How much power is used by a 9-V battery that produces a 3 amp current?   

How much power is used by a 9-V battery that produces a 3 amp current?   

Remember, P= IV ; or watts = amperes X volts.

Thus, in this case, watts = 3 amperes X 9 Volts = 27 watts

A circuit in which the path has gaps is called a(n) _________________ and the current __________ flow.a)open wire, canb)open circuit, cannotc)closed circuit, cand)closed system, cannot

A circuit in which the path has gaps is called a(n) _________________ and the current __________ flow.a)open wire, canb)open circuit, cannotc)closed circuit, cand)closed system, cannot

In a given circuit, decreasing the temperature of the wire has which effect?a) Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or currente)B and C

In a given circuit, decreasing the temperature of the wire has which effect?a) Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or currente)B and C

According to Ohm’s Law, if electric potential difference between two points increases, current will:a)decreaseb)increasec)remain the same.d)become zero.

According to Ohm’s Law, if electric potential difference between two points increases, current will:a)decreaseb)increasec)remain the same.d)become zero.

You have two light bulbs, one with a rating of 50 watts and one with a rating of 100 watts. Remember that the voltage across each would be the same if they were placed in a light socket. How would the current through each light bulb compare?a)Both bulbs would draw the same current.b)The higher watt bulb would draw less current.c)The lower watt bulb would draw less current.d)The lower watt bulb would draw more current.

You have two light bulbs, one with a rating of 50 watts and one with a rating of 100 watts. Remember that the voltage across each would be the same if they were placed in a light socket. How would the current through each light bulb compare?a)Both bulbs would draw the same current.b)The higher watt bulb would draw less current.c)The lower watt bulb would draw less current.d)The lower watt bulb would draw more current.

How much power is used when a 3 V battery produces 0.1 amp of current?   

How much power is used when a 3 V battery produces 0.1 amp of current?   

Remember, P= IV ; or watts = amperes X volts.

Thus, in this case, watts = 0.1 amperes X 3 volts, = 0.3 watts

Current is measured in _____, resistance in measured in _____ and power is measured in _____.a)watts, ohms, amperesb)amperes, ohms, wattsc)Coulombs, volts, amperesd)ohms, amperes, wattse)amperes, ohms, Coulombs

Current is measured in _____, resistance in measured in _____ and power is measured in _____.a)watts, ohms, amperesb)amperes, ohms, wattsc)Coulombs, volts, amperesd)ohms, amperes, wattse)amperes, ohms, Coulombs

In a given circuit, increasing the diameter of the wire has which effect?a) Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or currente)B and C

In a given circuit, increasing the diameter of the wire has which effect?a) Increases resistanceb)Decreases resistancec)Increases currentd)Has no affect on resistance or currente)B and C

What is the resistance of a device if the current through it is 10 amps and the voltage across it is 5 volts?   

What is the resistance of a device if the current through it is 10 amps and the voltage across it is 5 volts?   

Remember, V= IR ; or volts = amperes X ohmsTherefore, R = V ; or ohms = volts . I amperes Thus, in this case, ohms = 5 volts = 0.5 ohms

10 amperes

Label the circuit below to show the following: anode, battery, cathode, direction of electron flow, resistor, and switch.

LED light (0.40 Amp, 2.6 Volts)

Label the circuit below to show the following: anode, battery, cathode, direction of electron flow, resistor, and switch.

LED light (0.40 Amp, 2.6 Volts)

Battery

Anode Cathode

Electron flow

Switch Resistor

Electron flow

What power is used if a resistance of 100 ohms has a current of 0.1 amps flowing through it?

  

What power is used if a resistance of 100 ohms has a current of 0.1 amps flowing through it?

Remember, P= IV ; or watts = amperes X voltsHere we must first determine the volts before we can solve for watts.

From Ohm’s Law, we know that V= IR ; or volts = amperes X ohmsThus, in this case, volts = 0.1 amps X 100 ohms = 10 volts.

Substituting this value in our power equation above gives: watts = 0.1 amperes X 10 volts = 1 watt

  

What is the power used in a device if the resistance is 100 ohms and the voltage across it is 4V?

What is the power used in a device if the resistance is 100 ohms and the voltage across it is 4V?

Remember, P= IV ; or watts = amperes X voltsHere we must first determine the amperes before we can solve for watts.

From Ohm’s Law, we know that V= IR ; or volts = amperes X ohms.Rearranging this equation gives: amperes = volts ohms Thus, in this case, amperes = 4 volts = .04 amperes 100 ohms

Substituting this value in our power equation above gives: watts = 0.04 amperes X 4 volts = .16 watts

  

The primary neurotransmitter at the neuromuscular junction is ________, an ________ neurotransmitter. A)Dopamine , excitatoryB)Glutamate, excitatoryC)Acetylcholine, excitatoryD)GABA, inhibitoryE)Serotonin, inhibitory

The primary neurotransmitter at the neuromuscular junction is ________, an ________ neurotransmitter. A)Dopamine , excitatoryB)Glutamate, excitatoryC)Acetylcholine, excitatoryD)GABA, inhibitoryE)Serotonin, inhibitory

Arrange the following in the proper order in which they occur at the pre-synaptic side of a neuromuscular junction.1. Calcium ions enter the cell via voltage-gated calcium channels2. An action potential arrives at the presynaptic terminal3. Neurotransmitter is releasedA) 1, 2, 3 B) 2, 1, 3 C) 2, 3, 1 D) 3, 2, 1 E) 3, 1, 2

Arrange the following in the proper order in which they occur at the pre-synaptic side of a neuromuscular junction.1. Calcium ions enter the cell via voltage-gated calcium channels 2. An action potential arrives at the presynaptic terminal3. Neurotransmitter is releasedA) 1, 2, 3 B) 2, 1, 3 C) 2, 3, 1 D) 3, 2, 1 E) 3, 1, 2

The process by which neurotransmitter molecules detach from a postsynaptic neuron are reabsorbed by a pre-synaptic neuron so they can be recycled and used again. A. axon terminals B. synaptic transmission C. reuptake D. diffusion

The process by which neurotransmitter molecules detach from a postsynaptic neuron are reabsorbed by a pre-synaptic neuron so they can be recycled and used again. A. axon terminals B. synaptic transmission C. reuptake D. diffusion

Arrange the following in the proper order in which they occur at the post-synaptic side of a excitatory synapse.

1. Neurotransmitter binds to a ligand-gated ion-channel.2. An action potential is propagated along the postsynaptic cell’s axon3. Depolarization of the post-synaptic membrane.4. Sodium ions move into the post-synaptic cell.

A) 1, 2, 3, 4 B) 2, 1, 3, 4 C) 4, 2, 3, 1 D) 1, 4, 3, 2 E) 3, 1, 2, 4

Arrange the following in the proper order in which they occur at the post-synaptic side of a excitatory synapse.

1. Neurotransmitter binds to a ligand-gated ion-channel.2. An action potential is propagated along the postsynaptic cell’s axon3. Depolarization of the post-synaptic membrane.4. Sodium ions move into the post-synaptic cell.

A) 1, 2, 3, 4 B) 2, 1, 3, 4 C) 4, 2, 3, 1 D) 1, 4, 3, 2 E) 3, 1, 2, 4

Generally, neural impulses travel a. electrically between and within each neuron.  b. chemically between and within each neuron.  c. electrically between neurons and chemically within each neuron.  d. chemically between neurons and electrically within each neuron.

Generally, neural impulses travel a. electrically between and within each neuron.  b. chemically between and within each neuron.  c. electrically between neurons and chemically within each neuron.  d. chemically between neurons and electrically within each neuron.

The neurotransmitter acetylcholine is primarily involved inA. emotional states and sleep B. physical arousal, learning, and memory C. learning, memory, and muscle contractions D. movement, thought processes, and rewarding sensations

The neurotransmitter acetylcholine is primarily involved inA. emotional states and sleep B. physical arousal, learning, and memory C. learning, memory, and muscle contractions D. movement, thought processes, and rewarding sensations

Neurotransmitters are _______ that travel across the ________ to another cell. a. electrical signals; receptors b. electrical signals; synapses c. chemicals; receptors d. chemicals; synaptic cleft

Neurotransmitters are _______ that travel across the ________ to another cell. a. electrical signals; receptors b. electrical signals; synapses c. chemicals; receptors d. chemicals; synaptic cleft

List the following in order of their occurrence:A. Action potential travels along axon of sending neuronB. The neurotransmitter must fit perfectly into the receptorC. Synaptic transmission occurs when the action potential causes neurotransmitters to be released by the synaptic vesicles in the axon terminalsD. The neurotransmitters cross the synaptic gap and bind with the correctly shaped receptor sites on the receiving neuron. A)ABCDB)ACDCC)ADCBD)ACDB

List the following in order of their occurrence: A. Action potential travels along axon of sending neuronB. The neurotransmitter must fit perfectly into the receptorC. Synaptic transmission occurs when the action potential causes neurotransmitters to be released by the synaptic vesicles in the axon terminalsD. The neurotransmitters cross the synaptic gap and bind with the correctly shaped receptor sites on the receiving neuron. A)ABCDB)ACDCC)ADCBD)ACDB

Which of the following statements about the action of drugs is TRUE. A. Drugs can mimic the function of neurotransmitter at the synaptic cleft.B. Drugs can block the ligand-gated ion channel site on the membrane of the post-synaptic neuron. C. Drugs can block the reuptake of the neurotransmitter by the pre-synaptic neuron. D. All of the above

Which of the following statements about the action of drugs is TRUE. A. Drugs can mimic the function of neurotransmitter at the synaptic cleft.B. Drugs can block the ligand-gated ion channel site on the membrane of the post-synaptic neuron. C. Drugs can block the reuptake of the neurotransmitter by the pre-synaptic neuron. D. All of the above

Low levels of the neurotransmitter acetylcholine are often associated with A)DepressionB)Multiple sclerosisC)Parkinson’s DiseaseD)Alzheimer’s Disease

Low levels of the neurotransmitter acetylcholine are often associated with A)DepressionB)Multiple sclerosisC)Parkinson’s DiseaseD)Alzheimer’s Disease

Muscular tremors and rigidity in Parkinson's disease results from which of the following? A)Damage to acetylcholine pathway in the thalamus B)Damage to a dopamine pathway in the substantia nigraC)Excitotoxicity due to excess levels of glutamateD)Loss of GABA in the spinal cord

Muscular tremors and rigidity in Parkinson's disease results from which of the following? A)Damage to acetylcholine pathway in the thalamus B)Damage to a dopamine pathway in the substantia nigraC)Excitotoxicity due to excess levels of glutamateD)Loss of GABA in the spinal cord

Neurotransmitters are contained in _____ that are located in _____ of the pre-synaptic neuron.A. vesicles; axon terminalsB. axon terminals; dendritesC. receptor sites; synapsesD. cell membranes; synaptic gaps

Neurotransmitters are contained in _____ that are located in _____ of the pre-synaptic neuron.A. vesicles; axon terminalsB. axon terminals; dendritesC. receptor sites; synapsesD. cell membranes; synaptic gaps

Low levels of the neurotransmitter serotonin are often associated with A)DepressionB)Multiple sclerosisC)Parkinson’s DiseaseD)Alzheimer’s Disease

Low levels of the neurotransmitter serotonin are often associated with A)DepressionB)Multiple sclerosisC)Parkinson’s DiseaseD)Alzheimer’s Disease

Which of the following mechanisms can serve to remove neurotransmitter from the synaptic cleft?A)Reuptake by the axon terminus of the pre-synaptic cellB)Breakdown by enzymesC)Diffusion away from the synaptic cleftD)All of the above

Which of the following mechanisms can serve to remove neurotransmitter from the synaptic cleft?A)Reuptake by the axon terminus of the pre-synaptic cellB)Breakdown by enzymesC)Diffusion away from the synaptic cleftD)All of the above

Which of the following is a primary inhibitory neurotransmitter of the central nervous system?A)AcetylcholineB)GlutamateC)GABAD)Norepinephrine

Which of the following is a primary inhibitory neurotransmitter of the central nervous system?A)AcetylcholineB)GlutamateC)GABAD)Norepinephrine