Answer:
Explanation:
Action potential
It is the potential or power or electrical energy required to generate impulses and provides communication between the neurons is called action potential. Normally cell membrane consists of potential is called resting membrane potential() -70mV. The action potential is due to exchange of different ions across the membrane.
Phases of the action potential in a neuron are
i. Depolarization- it is caused by the influx of sodium and calcium ions through the opening of voltage-gated sodium and calcium channels. sodium ion influx is rapid than the calcium ions membrane potential -70mV to +30mV.
ii. Repolarization - It causes the efflux of potassium ions into the cell through the opening of potassium channels. the membrane returning to resting membrane potential.
iii. After- Hyper polarization - in this stage the potassium channels remain open and causes re polarization and comes to normal membrane potential.
The generation of impulses(depolarization) in neuron mainly depends on influx sodium and calcium ions without these ions, no action potential developed and neuron firing does not occur.
If the drugs inhibit these channels, no depolarization, no action potential, no neuronal firing or communication.
The channels involved in an action potential are voltage-gated sodium channels, potassium channels, and calcium channels.
The action potential is required for transmission of information one are to another area in the body.
The responses to different stimuli is due to action potential.
Answer: The correct answer is : This fragment refers to verse 13 of chapter 6 of the book of John of the Holy Bible. Jesus works the miracle of feeding 5000 people, multiplying 5 loaves and 2 fish that was the only thing they had. People were hungry and in this way they were satiated and even left over to carry.
Answer:
The sentence that best conveys the author's message in the story is:
"As long as we get to spend time together, it doesn't matter what we're doing."
Explanation:
The story attached clearly revolves around the theme of friendship. Kim could have chosen to be upset because Lily wanted to cancel their plans to go to the movies. However, she chose to help her friend instead. Together, they spent hours doing Lily's project and, as it turns out, they had fun together. Kim was attentive to her friend's need and, because they like each other so much, even school work was a fun activity for them.
Full Question:
Which of the following scenarios would most likely result in an increase of a country’s literacy rate?
A. The French stock market crashes horribly.
B. Thailand builds more public and private schools.
C. The gap between the rich and the poor widens in China.
D. Peace negotiations between North Korea and South Korea break down.
Answer:
B. Thailand builds more public and private schools.
Explanation:
There are two main causes of illiteracy that many poor countries experience today :
- Lack of resources (this includes skill teachers, text books, school buildings)
- Even if the resource exist, many of them couldn't afford it.
This is why building more public and private schools could increase the country's literacy rate. The private schools was made to take students from family who can afford to pay for the cost of education. The money will be distributed to the public schools which were targeted toward students who came from poor economic background.
