What do we call the state of a neuron when it is not firing a neural impulse? (2 points) action potential resting potential myelination signal transmission impulse inhibitory stage

Answers

Answer 1

The correct option is B.

Resting potential is the state of a neuron when it is not firing a neural impulse.

Resting potential is considered as the imbalance of electrical charge which existed between electrically excitable neurons or nerve cells in the interior and in their surroundings.

The resting membrane potential of a particular cell defines as the difference in electrical potential across the plasma membrane as when the cell exists in a non-excited state. The electrical potential difference that takes place across a cell membrane traditionally is expressed inside the cell by its value which is relative to the extracellular environment

When the condition of not sending a signal by a neuron takes place, it is considered to be at the "rest" stage. When a neuron exists at rest position, the inside region of a neuron is negative with respect to the outside.

The potential is recorded whenever a living cell is impaled with a microelectrode and is termed as the resting potential and it varies from one cell to another cell. Here it is valued to be -60 mV, but the value can range between -80 mV and -40 mV which depends on the particular type of nerve cell existed.

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Related Questions

A child attending daycare is prescribed 750 mg of an antibiotic for 10 days. The drug may be dosed in several ways and is available in two concentrations. Which dosing regimen will the provider consider to best assure drug adherence? group of answer choices 375 mg of a 250 mg/5 ml solution po twice daily 250 mg of a 250 mg/5 ml solution po three times daily 250 mg of a 500 mg/5 ml solution po three times daily 375 mg of a 500 mg/5 ml solution po twice daily

Answers

The best kind of prescription for the child is 250 mg/5 ml solution po three times daily.

What is a dose?

The term dose has to do with the quantity or amount of the drug that a patient is required take. We must know that a drug is a chemical and being a chemical, there must be a specified amount of it that has to be taken per day.

We know that the dose of the drug that is given to a patient is sometimes in proportion to the degree of symptoms that the patient is feeling. In this case, we can see that the drug is given in more than one dose. We now have to find out the correct dose of the drug that is required in this case.

Let us look at the drug, we are told that a child attending daycare is prescribed 750 mg of an antibiotic for 10 days. The best kind of prescription for the child is 250 mg/5 ml solution po three times daily.

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you made ml of a lead(ii) nitrate solution for lab but forgot to cap it. the next lab session you noticed that there was only ml left (the rest had evaporated). in addition, you forgot the initial concentration of the solution. you decide to take ml of the solution and add an excess of a concentrated sodium chloride solution. you obtain a solid with a mass of g. what was the concentration of the original lead(ii) nitrate solution?

Answers

4.83 M is the concentration of the original lead.

DILUTED and CONCENTRATED SOLUTIONS:

A solution is diluted when more solvent is added so that the concentration is lowered, whereas a solution is concentrated when solvent is removed from the solution so that the concentration increases. The removal of solvent can be done by evaporation. Both these processes involve the a change in the volume of the solution to cause a change in the concentration of the solution. This means that the same tools can be used to determine the concentration of a concentrated solution as would be done if it was a diluted solution.

The balanced reaction equation is:

[tex]Pb(NO_3)_2 (aq) + 2NaCl(aq) \rightarrow PbCl_2(s) + 2NaNO_3(aq)[/tex]

The molar mass of lead (II) chloride is 278.106 g/mol. The number of moles of lead(II) chloride is:

[tex]n = \frac{3.451 g}{278.106g/mol}[/tex]

[tex]n = 0.01241 mol[/tex]

The ratio between lead (II) chloride and lead (II) nitrate is 1:1 which means there was 0.0124mol of lead (II) nitrate in the solution. The concentration of lead (II) nitrate is:

[tex]M = \frac{0.01241 mol}{0.00200 L}[/tex]

[tex]M = 6.20mol/L[/tex]

This means the concentration of lead (II) nitrate in the partially evaporated solution is 6.20mol/L. The concentration of the original solution is:

[tex]M_1 V_1 = M_2 V_2[/tex]

[tex]M_1 = \frac{M_2 V_2}{V_1}[/tex]

[tex]M_1 = \frac{(6.20 M)(0.0779 L)}{0.1000 L}[/tex]

[tex]M_1 = 4.83 M[/tex]

Thus, the concentration of the original lead is 4.83 M.

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Mrs. Richardson performed an experiment on how the type of music affected plant growth. She sets up an experiment playing rock music, jazz music, country music, and rap music to fern plants. She also has a fern plant that she puts in a quiet room. She measures how tall the plants have grown after 4 weeks. They all received the same amount of water and light.

What is the dependent variable?
a
Rock, jazz, country, rap, and no music
b
Amount of water and light
c
Type of music
d
Plant growth

Answers

The dependent variable in this type of experiment is referred to as the Plant growth and is therefore denoted as option D.

What is Dependent variable?

This refers to a type of  variable whose value will change depending on the value of another variable which is referred to as the independent variable. It is also referred to the variable which is usually tested or measured when an experiment is done by scientists.

In this case, we were told that the plant were exposed to different criteria such as the music types and the constants such as light and water and the effect on the plant growth will be measured after sometime.

Since the parameter to be measured is the plant growth then it is referred to as the most appropriate choice for dependent variable.

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comparison of methods for spectral alignment and signal modelling of gaba‐edited mr spectroscopy data

Answers

Comparison of techniques for GABA-edited MR spectroscopy data spectral alignment and signal modeling.

There are many ways to align and quantify magnetic resonance spectroscopy (MRS) data in order to assess -aminobutyric acid in vivo (GABA). Because there are few ground-truth measurements available, there is little research comparing the performance of different approaches. In comparison to white matter, the concentration of GABA is almost twice as high in grey matter.

Here, we assess the performance of four spectral alignment approaches (i.e., retrospective frequency and phase drift correction) and six GABA signal modeling methods using the percentage of grey matter present in the MRS voxel as a proxy for ground-truth GABA concentration.

The alignment to the creatine (Cr) signal generates GABA+ estimates that account for around twice as much of the diversity in grey matter as the next highest performing alignment approach, according to our analysis of a broad dataset of 432 MEGA-PRESS scans targeting several brain areas.

Additionally, Cr alignment produced the fewest outliers and was the strongest. As opposed to this, all signal modeling techniques—aside from the single-Lorentzian model—performed equally well.

Our findings indicate that rather than frequency originating from first-order phase offsets within subspectra, performance variability is predominantly caused by variances in the zero-order phase calculated by each alignment method.

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Which of the following is the smallest?


A) salt grains

B) water molecule

C) human red blood cells

D) C. Difficile Bactria

Answers

Answer:

it's either a or b not c or d. there you go hope I helped

Explanation:

salt grains are very small, just like water molecule. so yea, hope I helped you out whoever you are.

Bromine is in its liquid state at 25 °C. Explain what this tells you about its melting point and boiling point.

Answers

Explanation:

Bromine is a halogen in group VII A of the periodic table with atomic number 35,an atomic weight of 79.91, and a density of 3.12 Mg.In the solid state it forms a cubic crystal with a melting point of -72 C and boiling point of 58 C.

Bromine's liquid state at 25°C indicates melting point below 25°C and boiling point above 25°C.

The observation of bromine being a liquid at 25°C reveals important details about its melting and boiling points. Since it exists as a liquid at this temperature, it signifies that its current state is beyond its melting point.

Therefore, bromine's melting point is below 25°C. However, since bromine has not transitioned into a gaseous state at 25°C, it indicates that its temperature is still below its boiling point. This suggests that the boiling point of bromine lies above 25°C.

The relatively narrow temperature range between its melting and boiling points makes bromine unique among elements and allows it to exist as a liquid at room temperature.

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Jenny experiences an average downward force of 441 N anywhere she goes

Answers

The mass of the object could now be obtained as 45 Kg.

What is gravity?

We define the term gravity as the force that drags an object down to the center of the earth. We know that every object that is found on earth has a mass. The mass of the object means that it is acted upon by the force of gravity.

Again we can obtain the weight of the object as the influence of the gravitational force on an object. In fact we define the weight of the object as the gravitational force that acts on an object. As such, the gravitational force or the weight of the object is given in Newton’s.

Given that;

Weight = mass * acceleration due to gravity

Mass = Weight/ acceleration due to gravity

Weight of the object = 441N

Acceleration due to gravity = 9.8 m/s^2

Mass of the object = 441N/9.8 m/s^2

= 45 Kg

The mass of the object could now be obtained as 45 Kg.

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in the titration of 230.0 ml of 0.4000 m honh₂ with 0.2000 m hbr, how many ml of hbr are required to reach the halfway point?

Answers

Titration has been the process to estimate the unknown volume by the known amount of the concentration and volume. 230 mL of HBr is required to reach the halfway point.

What is the dilution formula?

The dilution formula can be used to estimate the unknown volume through the half-neutralization of the acid and base in the titration process. The final volume can be estimated by the known amount of HONH₂.

The formula is given as:

M₁V₁ = M₂V₂

Given,

Volume of HONH₂ (V₁) = 230 mL

Molar concentration of HONH₂ (M₁) = 0.4000 M = 0.2000 M

Molar concentration of HBr (M₂) = 0.2000 M

Volum of HBr = V₂

Substituting values as:

230 ml × 0.2000 M = 0.2000 M × V₂

V₂ = 230 mL

Therefore, 230 mL HBr is the volume at halfway point.

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________ can be
made in the field or in the laboratory.

Answers

Answer:

observations

Explanation:

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what is the maximum number of covalent bonds that an oxygen atom with atomic number 8 can make with hydrogen? question 4 options: 1 6 4 2

Answers

Maximum number of covalent bonds that an oxygen atom can make with hydrogen is 2.

the ground state electronic configuration of oxygen is 2s² 2p⁴ that means it has 6 electrons in its valence shell and require two electrons are required to complete its octate. Two bonds are created when an electron donor atom shares the two needed electrons with oxygen. The ability of two oxygen atoms to share valence electrons results in the creation of a double bond between the two atoms.There are no longer any empty orbitals in the octet of oxygen after it is complete. As a result, it is unable to accept more electrons or create more bonds.

Therefore, Oxygen can only generate two bonds because it needs two additional electrons to complete its octet, after which it will run out of empty orbitals in which to receive additional electrons and create additional bonds.

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Three solutions of ph 4. 00, ph 7. 00 and ph 10. 00 are used to calibrate a ph meter. These solutions are known as.

Answers

These solutions used to calibrate a pH meter are known as pH buffer.

A buffer can be defined as a substance that prevents the pH of a solution from changing by either releasing or absorbing H⁺ in a solution.

Buffer is a solution that can resist pH change upon the addition of an acidic or basic components and it is able to neutralize small amounts of added acid or base, pH of the solution is relatively stable.

pH (potential of hydrogen) is a numeric scale used to specify the acidity or basicity of an aqueous solution:

When pH is less than seven (pH<7), solution is acidic.

When is equal seven (pH = 7), solution is neutral.

When pH is greater than seven (pH > 7), solution is basic.

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if the bonds of a reactant molecule break so that simpler molecules, atoms or ions form, the reaction is an exchange reaction.

Answers

If the bonds of a reactant molecule break so that simpler molecules, atoms or ions form, the reaction is an exchange reaction called decomposition reaction

What is a decomposition reaction ?

Decomposition reactions occur when complex chemical entities split apart into smaller components. Decomposition reactions often demand energy input. For instance, the thermal breakdown of potassium chlorate (KClO3) is a typical technique used in laboratories to generate oxygen gas.

Heat-induced breakdown is known as thermolysis. Decomposition caused by electricity is known as electrolysis. Decomposition brought on by light is referred to as photolysis. Heat-induced chemical reaction when one material splits into two or more compounds.

The opposite of a combination reaction is supposedly a decomposition reaction. A chemical decomposes into two or more components in a decomposition reaction, whereas in a combination reaction, two or more substances combine to create new molecules while also releasing energy.

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1. A dog with a mass of 3.5 kg goes for a run at a pace of 1.4 m/s. What is the
dog's kinetic energy?

Answers

The dog’s kinetic energy is KE = 3.43 J

The molar mass of hydrochloric acid is 36.461 g/mol. If 1.2 g of HCl are dissolved in 25ml of solution, what is the molarity?
You have 250ml of a 0.75 M lithium nitrate solution. How many moles are in it?
If you want to make a 0.25 M solution of sodium sulfate, and you use 0.75 L of water, how many moles of sodium sulfate should you add?
You have 56 mL of a 1.1 M lithium iron (II) phosphate solution. How many moles are in it?
If you want to make a 6.0 M of HCl, and you use 2.00 L of water, how many moles of HCl should you add?

Answers

use the formula M=n/V, where M=molarity, n=moles of solute, V= volume in litres

1.3M

0.02 mols

0.188 mols

0.062 mols

12 mols

while water is boiling, it absorbs 2257 kj of heat per kilogram of water. this takes place at a constant temperature of 100°c. what is the entropy change of 10 kg of water while it boils? (be careful of your energy units). (1 point)

Answers

The entropy change is 6.051 x 10^4 J/K

Given:

mass of water = 10 kg

latent heat of boiling = 2257 kj

constant temperature = 100°c

To Find:

entropy change of 10 kg of water

Solution:

entropy change = mass*latent heat of boiling/temperature

= 10×2257×1000/(273+100) K

= 22,570,000/373K = 6.051 x 10^4 J/K

Hence, entropy change is 6.051 x 10^4 J/K

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Perform the following problem. Round your answer appropriately.

8.1456 - 5.12 =

Answers

The difference between 8.1456 - 5.12 will be 3.0256 and rounding it off will give 3.

How to subtract the numbers?

It should be noted that the information given is that we should subtract 5.12 from 8.1456.

It should be noted that subtraction is used when we want to deduct a number from another number. It is taking away a number form another one.

In this case, we will take away 5.12 from 8.1456. This will give the difference between the numbers.

Therefore, 8.1456 - 5.12 = 3.0256

Therefore, the difference is 3.0256 and rounding it appropriately will give a value of 3.

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when two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they can be joined through a

Answers

They can be joined through a Peptide bond

The amino acids serve as the foundation for proteins. Water is produced when the amino acids are linked to form a lengthy chain of acids via amino and carboxyl. The main protein is made up of these long chain amino acids.

When the carboxyl group of one molecule combines with the amino group of the other molecule, a molecule of water is released, and a peptide bond is created between the two molecules (H2O). This condensation event, sometimes referred to as a dehydration synthesis reaction, typically takes place between amino acids.

What is a Peptide bond ?

The carboxyl group of one amino acid is joined to the amino group of another to produce a peptide bond, also known as a eupeptide bond. In essence, a peptide link is an amide-type covalent chemical bond.

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what is the mean of 35, 2, 33,25 70,75 40,42,12,15,7,44,20,25,3,65,62,

Answers

31 answer

trust me

what is the mean of 35, 2, 33,25 70,75 40,42,12,15,7,44,20,25,3,65,62,

its 31

what is the difference between melting and fusion?​

Answers

Melting occurs when a solid changes state into a liquid.

Fusion occurs when a liquid changes state into a solid.

(So, basically, they are opposite of each other)

Hope this helps!

Have an awesome day!

The volume of a container is found to be 38. 5 in3. What is the volume in units of cm3?

Answers

The volume of a container is found to be 38. 5 in3. What is the volume in units of cm3?

Explanation:

631cm^3

How many bonds are broken in the balanced reaction of the combustion of nitric oxide.

Answers

Answer:3

Explanation:

In the balanced reaction of the combustion of nitric oxide (NO), two bonds are broken.

Nitric oxide (NO) is composed of a nitrogen atom bonded to an oxygen atom. During combustion, NO reacts with oxygen (O2) to form nitrogen dioxide (NO2). The balanced chemical equation for this reaction is:

2 NO + O₂ → 2 NO₂

In this reaction, there are two molecules of nitric oxide (NO) on the left-hand side of the equation. Each nitric oxide molecule has one nitrogen-oxygen bond, so there are a total of two bonds in the reactants.

On the right-hand side of the equation, there are two molecules of nitrogen dioxide (NO2). Each nitrogen dioxide molecule has two nitrogen-oxygen bonds, so there are a total of four bonds in the products.

To balance the equation, two nitric oxide molecules are needed to produce four nitrogen dioxide molecules. This means that during the reaction, two nitrogen-oxygen bonds are broken in the reactants, and four new nitrogen-oxygen bonds are formed in the products.

In summary, in the balanced reaction of the combustion of nitric oxide, two bonds are broken.

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the equation for reaction between calcium carbonate and hydrochloric acid is shown. CaCO3 + 2HCl —> CaCl2 + H2O + CO2 how many moles of calcium carbonate will give 24 cm3 of carbon dioxide when reacted excess of the acid?

Answers

Answer:

0.001 mole

Explanation:

I attached my answer

EXPLAIN ONE REASON WHY COPPER WIRE WAS USED TO MAKE THE COPPER FLOWERS

Answers

Copper metal is used for making electric wires because it is highly ductile in nature. It is a good conductor of electricity.

Complete the model of a sodium chloride crystal by dragging the chlorine and sodium atoms to their correct positions.

Answers

The model is completed by inserting the sodium and the chloride ions in alternate positions.

What is a model?

It is common to show the arrangement of atoms or ions in a substance by the use of models. In the realm of science, a model could be used for the purpose of explanation or for the purpose of prediction. It is also possible to use a model as the way that we can be able to underscore and understudy the properties of a molecule.

Now we know that sodium chloride is an ionic compound. The ionic compounds are crystalline. This implies that the ions are arranged in a regular and a repeating pattern which enables the substance to have a definite shape as well as a high melting and a high melting point.

It then follows from the image that the ions of sodium and chlorine do occupy alternate positions in the solid in order to maximize the interaction between the ions. It then follows that the model is completed by inserting the sodium and the chloride ions in alternate positions.

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you have 3.8 kg of water. one mole of water has a mass of 18 g/mole and each molecule of water contains 10 electrons since water is h2 o. what is the total electron charge contained in this volume of water? the elementary charge is 1.6 × 10−19 c . answer in units of c.

Answers

The total electron charge contained in this volume of water is 8.565 x 10⁷c.

Equation :

N total = N mole (10e⁻ / molecule) Nₐ

Nₐ = 6.022 x 10²³ molecules / mole

N mole = mass / molecular weight

= Vp / mol wt

= (1.6 × 10⁻¹⁹ c) (10³ kg /m³) / 18 g / mole (10⁻³ kg/g)

= 88.89 moles

N total = N mole (10e⁻ / molecule) Nₐ

N total = 88.89 moles (10e⁻ / molecule) (6.022 x 10²³ molecules / mole)

N total = 5.353 x 10²⁶e⁻

Q total = N Total (-e)

Q total = (5.353 x 10²⁶) (1.6 × 10−19 c )

Q total = 8.565 x 10⁷c

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a compound differs from a mixture in that a compound always has : a. a maximum of two components. c. a definite composition. b. a heterogeneous composition. d. at least three components

Answers

Compounds are formed by the combination of two or more molecules. A compound differs from a mixture as the former has a definite composition. Thus, option c is correct.

What are compounds, and mixtures?

Compounds are said to be substances that have been composed of various identical molecules bonded together by chemical bonds. They are homogenous substances that have fixed ratios ad proportions.

Mixtures are substances composed of various substances linked by the physical interactions that vary in composition and can be homogenous and heterogeneous.

Therefore, option c. the compounds have fixed composition, unlike the mixtures.

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Please help me with chemistry questions!

Answers

2 *10^3 = 2,000
5 *10^-6 = 0.00005
When the power is positive, you move the decimal to the right. When it is negative, you move the decimal left.

Is Fe+S classified as a mixture, an element, or a compound?

Answers

Is Fe+S classified as as compound

Iron and sulfur are both elements from the periodic table of elements each one has its own unique physical and chemical properties iron is a metal, and sulfur is a nonmetal. when these two are heated together, the iron atoms combine with the sulfur atoms to make a compound known as iron sulphide when iron and sulphur are mixed then the reaction is called as redox reaction or oxidation reduction reaction in that reaction Fe loses electron that is Fe is undergoing in oxidation and we know that the substance which itself undergo oxidation act as a reducing agent so in this case Fe is the reducing agent. Fe+S is a compound because compound means the substance made from two or more different element that have been chemically joined and mixture means made up of two or more chemical component that are not chemically joined called mixture so given iron sulphide is a compound.

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the symbol for xenon (xe) would be a part of the noble gas notation for the element antimony. cesium.

Answers

The symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

For writing the electronic configuration of any element by using the preceding noble gas configuration, we simply use the symbols of noble gas belongs to the previous period of that particular elements. We can't use the symbol of noble gas of same period from which the element belong.

A is the wrong option because the noble gas in the preceding period to the period from which antimony belongs is krypton.

The actual electronic configuration of antimony is as follow:

[Kr] 4d10 5s2 5p3

B is correct option because the noble gas in the preceding period to the period from which Cesium belongs is Xenon.

The actual electronic configuration of Cesium is as follow:

[Xe] 6s1

Thus, we concluded that the symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

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an aqueous solution containing 17.5 g of an unknown molecular solute (a nonelectrolyte) in 100.0 g of water has a freezing point of −1.80 °c. what is the molar mass of the unknown compound? kf(water)

Answers

The nonelectrolyte is a substance that has been known to not ionize in an aqueous solution. The molar mass of the unknown compound at the freezing point of −1.80 ° C is 180.833 g/mol.

What is the freezing point?

The freezing point has been the estimate of the temperature at which the substance is said to change its phase from the liquid to the solid state. It is just the opposite of the melting point.

Given,

ΔTc = -1.8 °C

Kc water = 1.86 °C.Kg/mol

Mass solvent =  100.0 g = 0.1 Kg

Mass solute = 17.5 g

Mass of solution = mass of solute + mass of solvent = 117.5 gm

Molality (m) is calculated as:

molality = solute (mol) ÷ solvent (Kg)

m = ( - 1.8 °C) ÷ ( - 1.86 °C.Kg/mol)

m = 0.9677 mol/Kg

Molar mass can be calculated from molality as:

moles of solute = molality × solvent

moles = 0.9677 mol/Kg × 0.100 Kg H2O

= 0.09677 mol

Now, moles and mass are used to calculate molar mass as:

Molar mass = mass ÷ moles

= 17.5 g  ÷ 0.09677 mol

= 180.833 g/mol

Therefore, the molar mass of the unknown substance is 180.833 g/mol.

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