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4 years ago

A nerve signal is also called a/n _______.

Biology

1 answer:

Zinaida [17]4 years ago

4 0

Answer:

pulse

axon

action potential

frontal lobe

hypothalamus

occipital

dopamine

Before receiving a nerve impulse, a neuron is at its resting potential, with more negative charges inside the cell than on the outside of the cell. When the neuron receives the nerve impulse, it is depolarized, allowing positive ions to flow across the cell membrane into the neuron. This is called an action potential, and the action potential travels the length of the neuron, taking advantage of the myelin sheath on many neurons. Once the signal has traveled through the neuron, the sodium-potassium pump repolarizes the cell, restoring the resting potential of the neuron.

Explanation:

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Emily is given an object by her grandmother. She is told it is worth a lot of money. Emily thinks it is quite ugly on the outsid

Darya [45]

Answer:

Rock

Explanation:

Minerals are inorganic substances that occur naturally in nature and have a

a definite chemical composition and a crystalline structure while rocks may consists of one or many minerals together along with some organic remains due to which it may not look shiny and crystalline from outside.

Here, the two characteristics that enable the reader to identify the object given by grandmother to Emily as rock are –

a) Looks ugly on the outside (shows the presence of organic matter)

b) solid purple color with pretty crystals (crystalline structure inside)

8 0

3 years ago

Compare a natural meadow with a cornfield in terms of biodiversity. in your answer, be sure to address the: • number of species

Mademuasel [1]

In a cornfield, only one plant species has dominated the area, that is the corn plant. While in a natural meadow, multiple species of plants occurs of different species. The presence of the different types of plants in the meadow will interact more number of insects in it as compared to the corn field. This will lead to more interactions among the different species in a natural meadow. The greater biodiversity of the natural meadow than the cornfield will support it better.

In case of any natural disaster, or a pest attack, all the plants will be killed in a corn field and so will the insects dependent on them, but in a natural meadow, if one plant species is killed by a natural disaster, other will still be alive. Hence, the ability to survive is greater in natural meadow.

5 0

4 years ago

How does photosynthesis help to maintain the percentage of oxygen and

MatroZZZ [7]

Answer:

Humans release carbon dioxide (CO2) into the atmosphere through cellular respiration. This CO2 is used by plants during photosynthesis. During photosynthesis, plants release oxygen (O2) into the atmosphere. The oxygen is used by animals in order to carry out cellular respiration.

Explanation:

I put all I know into that so it should be right but if it isn't then I'm sorry

8 0

3 years ago

Which one of these regulates biological safety in the workplace?

Lisa [10]

Answer:

The answer is:

NIH

3 0

3 years ago

The burning of which of the following energy sources is most linked to global warming.

Valentin [98]

Fossil fuels coal, petroleum, and natural gas are our main sources of energy
, these sources gives us energy and producing the vast majority of fuel,electricity, and heat used by people across the globe but cause the global warming and increase the temperature of the earth
hope it helps

4 0

4 years ago