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Which of the following is true of ligand gated sodium ion channels neurons?

AlladinOne [14]

The true statement about ligand gated sodium ion channels in neurons are open in response to chemical messenger and hyperpolarize the membrane.

<h3>What are ligand gated sodium ion channels?</h3>

Ligand gated sodium ion channels are the channels present in the neurons. Ion moves through this channel inside the cell or outside the cell.

Thus, the correct option is a) Open in response to chemical messenger and depolarize the membrane.

Learn more about ligands

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6 0

2 years ago

A 3.59 kg block is released from rest 53.0 m above the ground. When it has fallen 21.3 m, what is its kinetic energy

Juli2301 [7.4K]

<h3><u>Answer:-</u></h3>

$\implies$ 1115.2 Joules

<h3><u>Given :- </u></h3>

$\red{\leadsto}\:$ $\textsf{Height\: at \:rest\:}$ $\sf,h_2= 53.0m$

$\green{\leadsto}\:$ $\textsf{Height\: to\:which\;block\:}$ $\sf,h_1= 21.3$

<h3><u>Solution</u> :-</h3>

$\maltese$ As the block falls , the change in potential energy will be converted into kinetic energy

$\leadsto$ Potential Energy at rest at height, $h_2$ = $\sf mgh_2$

$\leadsto$ Potential Energy when fell at height, $h_1$ = $\sf mgh_1$

$\\$

$\leadsto$ Kinetic energy= Change in Potential energy = = $\sf mgh_2-mgh_1$

$\begin{gathered}\implies\quad \sf mg(h_2-h_1) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf mg(53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 \times 9.8\times (53.0-21.3) \\\end{gathered}$

$\begin{gathered}\implies\quad \sf 3.59 \times 9.8\times 31.7\\\end{gathered}$

$\begin{gathered}\implies\quad \boxed{\sf{1115.2\: Joules}}\\\end{gathered}$

7 0

3 years ago

What is the frequency of a clock waveform whose period is 750 microseconds?

Allushta [10]

Use this formula to find your answer...

Determine the frequency of a clock waveform whose period is 2us or (micro) and 0.75ms

frequency (f)=1/( Time period).

Frequency of 2 us clock =1/2*10^-6 =10^6/2 =500000Hz =500 kHz.

Frequency of 0..75ms clock =1/0.75*10^-3 =10^3/0.75 =1333.33Hz =1.33kHz.

6 0

3 years ago

The electricity went out at José's home, and he lit some candles until the lights came back on. The candle wax near the wick bec

Verdich [7]

It’s A. Amorphous solid

5 0

4 years ago

Read 2 more answers

Which is true of a step-down transformer but not a step-up transformer? The core is made of copper and the coils are made of iro

Agata [3.3K]

The primary winding has more coils than the secondary winding

Explanation:

A transformer is a device consisting of two coils (called primary and secondary coil) wrapped around a soft iron core. As the primary coil is connected to alternate voltage, a variable magnetic field inside the iron core is produced; the lines of this field cut also the secondary coil, and due to the phenomenon of electromagnetic induction, an e.m.f is produced in the secondary coil (so, an alternate voltage).

The voltages in the two coils are related by the transformer equation:

$\frac{V_1}{V_2}=\frac{N_1}{N_2}$ (1)

where

$V_1$ is the voltage in the primary coil

$V_2$ is the voltage in the secondary coil

$N_1$ is the number of turns in the primary coil

$N_2$ is the number of turns in the secondary coil

In a step-down transformer, the voltage in the secondary coil is lower than the voltage in the primary coil (they are used to decrease the voltage in input), therefore:

$\frac{V_1}{V_2}>1$