Contemplation

Solved by ramonistry Exercise 3: Neurophysiology of Nerve Impulses: Activity 8: Chemical Synaptic Transmission and Neurotransmitter Release Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. The end of the axon where it contacts a target is called the You correctly answered: c. axon terminal. Neurotransmitter is released into the synaptic gap by You correctly answered: a. exocytosis. Exocytosis of neurotransmitter from the axon terminal is triggered by an increase in the intracellular concentration of You correctly answered: c. Ca2+ . Neurotransmitter released into the synaptic gap reaches the target cell by You correctly answered: b. diffusion. At the target, neurotransmitter You correctly answered: d. does all of the above. Experiment Results Predict Question: Predict Question 1: You have just observed that each action potential in a burst can trigger additional neurotransmitter release. If calcium ions are removed from the extrac...

Solved by ramonistry Exercise 3: Neurophysiology of Nerve Impulses: Activity 7: The Action Potential: Conduction Velocity Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. An action potential can be propagated along an axon because there are __________ channels in the membrane. You correctly answered: d. voltage-gated The units of conduction velocity are You correctly answered: d. meters/second. Which of the following will affect axonal conduction velocity? You correctly answered: c. both the diameter of the axon and the amount of myelination Which of the following describes an A fiber? You correctly answered: a. large diameter, heavily myelinated Which of the following describes a C fiber? You correctly answered: c. small diameter, unmyelinated Experiment Results Predict Question: Predict Question 1: How will the conduction velocity in the B fiber compare with that in the A Fiber? Your answer : b. The conduction velocity in the B ...

Solved by ramonistry Exercise 3: Neurophysiology of Nerve Impulses: Activity 6: The Action Potential: Coding for Stimulus Intensity Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. The time after an action potential when a second action potential cannot be generated no matter how intense the stimulus is called the You correctly answered: b. absolute refractory period. The time after an action potential when a second action potential can be generated only if the stimulus intensity is increased is called the You correctly answered: c. relative refractory period. The term frequency refers to You correctly answered: c. the number of action potentials per second. The purpose of this activity is to explore You correctly answered: b. the relationship between stimulus intensity and the frequency of action potentials. Experiment Results You have not completed the Experiment. Experiment Data: Post-lab Quiz Results You scored 100% by answer...

Solved by ramonistry Exercise 3: Neurophysiology of Nerve Impulses: Activity 3: The Action Potential: Threshold Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Axons are You correctly answered: d. long, thin structures that extend from a neuronal cell body. Which of the following is easier? You correctly answered: a. extracellular recordings of the action potential An action potential is usually initiated in an axon at or near You correctly answered: d. all of the above The initiation of an action potential in a sensory neuron in the body normally You correctly answered: a. follows a sufficiently large depolarizing receptor potential. Experiment Results Predict Question: Predict Question: How will the action potential at R1 (or R2) change as you continue to increase the stimulus voltage? Your answer : b. The peak value of the action potential will increase. Stop & Think Questions: Why is the action potential recorded by the se...

Solved by ramonistry Exercise 3: Neurophysiology of Nerve Impulses: Activity 2: Receptor Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Assuming that the resting potential of a sensory neuron is -70 mV, which of the following represents a depolarization? You correctly answered: c. a change to -60 mV Which of the following is a sensory modality (type of sense)? You correctly answered: e. all of the above Which of the following is a sensory stimulus? You correctly answered: d. all of the above Which of the following is true of the response of a sensory neuron to the appropriate sensory stimulus? You correctly answered: c. both a and b Experiment Results Predict Question: Predict Question 1: The adequate stimulus for a Pacinian corpuscle is pressure or vibration on the skin. Which of the following modalities will induce the largest amplitude receptor potential in the Pacinian corpuscle Your answer : c. moderate-intensity p...

Solved by ramonistry Exercise 1: Cell Transport Mechanisms and Permeability: Activity 5: Simulating Active Transport Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. The movement of sodium and potassium maintained by the Na+ -K+ pump You correctly answered: e. requires energy and is against a concentration gradient. The sodium-potassium pump is classified as a(n) You correctly answered: a. antiporter. The sodium-potassium pump moves _____ sodium ions and _____ potassium ions simultaneously. You correctly answered: b. 3, 2 Solutes that require active transport for movement might be too large to pass or might be You correctly answered: a. lipid insoluble. Experiment Results Predict Question: Predict Question 1: What do you think will result from these experimental conditions? Your answer : c. No Na+ will be transported. Predict Question 2: Do you think the addition of glucose carriers will affect the transport of sodium or potassium?...

Solved by ramonistry Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Which of the following is true of osmosis? You correctly answered: c. It is a type of diffusion. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. The variable that affects osmotic pressure is You correctly answered: a. the concentration of nondiffusing solutes. The net movement of water would be into the cell in a You correctly answered: b. hypotonic solution. Experiment Results Predict Question: Predict Question 1: What effect do you think increasing the Na+ Cl- concentration will have? Your answer : a. increased pressure Predict Question 2: What do you think will be the pressure result of the current experimental conditions? Your answer : c. pressure above the left beaker Stop & Think Questio...

Solved by ramonistry Exercise 1: Cell Transport Mechanisms and Permeability: Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Molecules need a carrier protein to help them move across a membrane because You correctly answered: d. they are lipid insoluble or they are too large. Which of the following is true of facilitated diffusion? You correctly answered: c. Movement is passive and down a concentration gradient. Examples of solutes that might require facilitated diffusion include You correctly answered: d. all of the above. Which of the following would not affect the rate of facilitated diffusion? You correctly answered: a. the amount of intracellular ATP Experiment Results Predict Question: Predict Question 1: What effect do you think increasing the number of protein carriers will have on the glucose transport rate? Your answer : b. The glucose transport rate will increase. Predict Ques...

Solved by ramonistry Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. In diffusion, molecules move You correctly answered: a. from high concentration to low concentration. Which of the following dialysis membranes has the largest pore size? You correctly answered: d. 200 MWCO Avogadro's number is a constant for the number of You correctly answered: b. molecules. Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No, not at all. Predict Question 2: Recall that glucose is a monosaccharide, albumin is a protein with 607 amino acids, and the average molecular weight of a single amino acid is 135 g/m...