Why can information only pass in one direction across synapse?? pls help !!

Answers

Answer 1
A Nerve electrical impulse only travels in one direction. There are several reasons nerve impulses only travel in one direction. The most important is synaptic transport.
In order for a "nerve impulse" to pass from cell to cell, it must cross synaptic junctions. The nerve cells are lined up head to tail all the way down a nerve track, and are not connected, but have tiny gaps between them and the next cell. These tiny gaps are called synapses.
When you get a nerve firing, you have probably heard that it is an electrical impulse that carries the signal. This is true, but it is not electrical in the same way your wall outlet works. This is electrochemical energy. Neurotransmitters are molecules that fit like a lock and key into a specific receptor. The receptor is located on the next cell in the line. When the neurotransmitter hits the receptor on the next cell in line, it signals that cell to begin a firing as well.
This will continue all the way down the length of the nerve track. In a nutshell, a nerve firing results in a chain reaction down the nerve cell's axon, or stemlike section. Sodium (Na+) ions flow in, potassium (K+) ions flow out, and we get an electrochemical gradient flowing down the length of the cell. You can think of it as a line of gunpowder that someone lit, with the flame traveling down the length of it. Common electrical power is more like a hose full of water, and when you put pressure on one end, the water shoots out the other.
Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors in one place.

Related Questions

In sports how do objects change direction .Name 7 ways

Answers

wind, deflection, depending on how hard you hit it, theres three

Which statement correctly compares electric charge with electric current?

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Answer:

voltage causes electric charges to move from higher to lower potential.

Explanation:

I need help
I would give brainliest ​

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Answer:

How we supposed to tell you where it go

Explanation:

related to HELP part c number 1

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Answer:

Due to suitable environment of the equator.

Explanation:

Latitude is abiotic factor that has a great impact on the occurrence of fish species as we can see in the graph, the fish species increases as we go towards equator whereas decreases when we go away from the equator. This is because the climatic condition and temperature of water at the equator is suitable and warm so this suitable environment attracts more species to lives there.

Multiple choice question, someone please answer

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I believe the answer is b

HELP ASAP!! I have no idea

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Answer:

Explanation:

what is the question?

A white flower is pp.What is its genotype?

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Answer:

Explanation:

The genotype is recessive time=1/4 of the offsprings have white flowers!

Explanation:

In a broad sense, the term "genotype" refers to the genetic makeup of an organism; in other words, it describes an organism's complete set of genes. ... Humans are diploid organisms, which means that they have two alleles at each genetic position, or locus, with one allele inherited from each parent.

hope it helps u

what provides new variation

Answers

Answer:

Mutation

Explanation:

The main cause of variation within a population is usually through genetic mutation.

Mutation is the alteration of the genetic sequence within an organism. It often lead to formation of new genetic patterns and codes.

Most times, environmental influences are paramount to causing genetic mutation within a population.

Other times, it might be due to competition and some other internal factors.

Mutation can be transferred from parents to offspring in most cases.

What was Ptolemy's objection?

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geocentic system ! hope this helps

PLEASE HELP!! I NEED THIS ASAP

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Answer:

Molecules Move up the concentration gradient- Passive

Requires no energy- Passive

Requires energy- Active

Molecules move with the flow- Passive

Explanation:

Passive needs no energy while Active does

Historic Westminster Abbey in London, England, has been damaged by the sulfur dioxide and nitrogen oxide in acid rain. This is an example of _____.

biological weathering
chemical weathering
physical weathering

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Answer:

i think its chemical weathering

Explanation:

hehe

Again PLEASE help I will give Brainliest!!!!!!!!!!!!!!!!

Answers

Its the one all the way at the bottom

The taxonomic classification that contains the most organisms and is the MOST inclusive is

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Answer:

Domain

Explanation:

A domain is the most inclusive of the levels

define natural greenhouse ​

Answers

Answer:

the natural process that warms the earth's surface is known as natural greenhouse.

Imagine you are a systematist who has discovered an unfamiliar
animal. Which of the following observations about the animal will best
help you find its taxonomic classification?
The animal has an unpleasant temperament.
The animal has sharp, pointed teeth.
The animal was found near a herd of deer.
The animal bit you.

Answers

Answer:

1) taxonomy

2) species

3) the animal has sharp, pointed teeth

4) the current taxonomic system is based on the Linnaean system

5) he only had two kingdoms, animals and plants

Explanation:

did the quick check

The observation about the animal that will be helpful in finding its taxonomic classification is B. The animal has sharp, pointed teeth.

Taxonomy refers to the science of the classification of organisms into groups. The classification is based on the characteristics that the organisms have.

Therefore, in a situation whereby the person is unfamiliar with an animal, the shape of the teeth of the animal can be used for its classification.

Read related link on:

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Pls help ASAP I really need help

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It's B

And WHY YOU GOT A SAMSUNG COMPUTER BOIII NEED THAT MAC

Give one substance that plants absorb by active transport

Answers

the uptake of glucose in the intestines in humans and the uptake of mineral ions into root hair cells of plants.

What are 2 examples Natural selection?

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Answer:

Here are some examples of natural selection: In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs.

Explanation:

A rash can indicate the type of disease present.

True
False

Answers

Answer:

true

Explanation:

Answer:False

Explanation:Skin rashes can have causes that aren't due to underlying disease. Examples include hot and humid weather, excess sun exposure, or scratchy clothes that don't fit.

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Darwin observed a variety of tortoises on the Galapagos Islands. These observations provided evidence for which of these statements?
A Species vary locally
B Species vary over time,
c Island species are identical to mainland species
DIsland species are unrelated to mainland species

Answers

Answer:

B) Species vary over time

Answer: Species vary over time!

Explanation:

I did it

Explain why DNA must be replicated.


I need this ASAP please, ty.

Answers

Answer:

DNA, found within the nucleus, must be replicated in order to ensure that each new cell receives the correct number of chromosomes.

Cathy placed a sample of yeast , a single celled eukaryotes, in a closed test tube containing a solution of glucose. How will the composition of the air in the test tube change as the yeast interacts with the glucose

Answers

Yeast is very similar to human cells in that we have the same cellular respiration process. The formula for cellular respiration is C6H12O6(Glucose) + O2(Oxygen) = CO2(Carbon dioxide) + H2O
Because of this we know that the yeast is going to take oxygen from the air and the glucose in the test tube and produce carbon dioxide with it, so the full answer would be “The composition of the air in the test tube would change so that there is a higher composition of CO2.” If you need to explain it more pull from my explanation :)

The diagram below represents a food web. Which organisms are correctly paired with their nutritional roles?
Snakes
Hawks
Mountain
lions
Insect
eating
birds
Rabbits
Seed-
eating
birds
Mice
Bark
beetles
Deer
Grasshoppers
Flower seeds
Vice
Grasses
Mushrooms
Bacteria
Trees
A. hawk-decomposer; insect-eating bird-parasite
B. mouse-autotroph; flower seed-heterotroph
C. mountain lion-consumer; bark beetle-herbivore
D. grasshopper-carnivore; grass-autotroph

Please helpppp meee!!!!its a final

Answers

Answer:

C. mountain lion-consumer; bark beetle-herbivore

Explanation:

Food webs contain a series of inter-connected food chains. In a food web, organisms in different trophic levels feed on one another to obtain energy. Based on the diagram attached to this question, the roles of different organism is as follows:

- MOUNTAIN LION: This is a consumer i.e organism that feeds on other animals. This is the case as seen in the diagram that mountain lions are feeding on rabbits and Hawks.

- BARK-BEETLE: This is an herbivore because it feeds directly on the plants as seen in the attached image.

Do both questions and both parts and I will brainlist

Answers

Answer:

Desertification cause: Overgrazing.

Desertification effect: No plants in the ecosystem.

Urbanization cause: Industrial growth.

Urbanization effect: More people move into the city/town and omit more Co2.

Hope this helped and have a wonderfully amazing day. :)))

Over grazing, no plants in the ecosystem, industrial growth, more people migrated for jobs.

Happy to help

Which gas is most effective in absorbing incoming harmful ultraviolet radiation in the earth's stratosphere before that radiation reaches earth's surface?

Answers

Answer:

Ozone (O₃) gas

Explanation:

In the Earth's stratosphere, oxygen gas (O₂) is combined with atomic oxygen (O) to form ozone gas (O₃). This is very important because ozone protects the life on Earth from ultraviolet (UV) radiation from the Sun. UV radiation is high-energy radiation, and it is very dangerous for living organisms. Ozone molecule (O₃) absorbs UV radiation and it breaks down by forming O₂ and atomic oxygen (O) again. In this way, it protects the Earth from nocive radiation.

A student proposes that the cell types shown here can be classified as to plant,animal,fungal,and bacterial. The student also proposes that an evolutionary relationship can be hypothesized based on the data. What evolutionary relationship and classification is best supported by the data

Answers

Answer:

Cell types I and III are animal and fungal cells, which are most closely related since they are eukaryotic cells that are heterotrophic.

Explanation: ¯\_(ツ)_/¯

The unit of electrical charge.
(1 Point)
Capacitor
Coulomb
Electric Dipole
Electromagnet
Ferromagnetic
Generator
Magnetic Force
North and South Poles
Ohms
Voltage

Answers

Answer:

coulomb

Explanation:

A coulomb is the SI unit of electric charge. It is equivalent to one ampere-second or the amount of charge transported in one second by a current of one ampere.

Hope that helps.

1. What do you predict Earth's interior is like? How do its rocks compare to rocks on the surface? Cite evidence that supports your prediction.

Answers

Answer:

Volcanoes, geysers, and hot springs all provide clues about Earth's interior. They also show one of the ways that Earth's layers interact with each other.  

Explanation:

Name the two main types of a cell​

Answers

2 main cell types: eukaryotic & prokaryotes
eukaryotic and prokaryotic

Differentiate between the three major climate zone

Answers

Answer:

tropical, temperate, and polar

The three major climate zones are tropical, polar, and temperate.

What are the climate zones?

A larger pattern, which helps one to understand weather is known as climate. The climate of the region is predicted by the average weather in the location over a long time duration. The three prime climate zones of the Earth are:

TropicalTemperatePolar

The climate region close to the equator with warm air masses is called tropical. In this climate zone, the average temperature in the coldest month is 18 degree C. This is warmer in comparison to the average temperature of the warmest month in the polar zone.

The polar climate zone is found in the North and South poles due to adjacent cold air masses. In this zone, the warmest months average is less than 10 degree C. This is lesser in comparison nto the average temperature of the coldest months in the tropical zones.

The climate zone situated between the North and South poles and the equator is the temperate zone. The average temperature of the coldest months in the temperate zone is lesser in comparison to the tropical zones, while the average temperature of the warmest months in the temperate zone is more than that of the polar zone.

Thus, the three major climate zones are tropical, polar, and temperate.

Find out more information about climate zones here:

https://brainly.com/question/1112371

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