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3 years ago

Explain how neurons convey information using both electrical and chemical signals.

Physics

1 answer:

8090 [49]3 years ago

6 0

Answer:

Explanation:

Neurons communicate via both electrical signals and chemical signals. The electrical signals are action potentials, which transmit the information from one of a neuron to the other; the chemical signals are neurotransmitters, which transmit the information from one neuron to the next.

The electrical signal travels down the axon to the axon terminals where it tells the vesicles to release the neurotransmitters into the synaptic cleft which travel to the receptors of the receiving cell which releases the second messengers

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According to car and driver, an alfa romeo going at 70 mph requires 177 feet to stop. assuming that the stopping distance is pro

tia_tia [17]

Let d represents the stopping distance required by an alfa romeo.

The stopping distance is proportional to the square of velocity is equivalent to the equation,

$d=kv^2$

Here, k is proportionality constant.

Given, d = 177 feet and v = 70 mph.

So, proportionality constant

$k=\frac{177\ feet }{(70\ mph)^2} \simeq 0.0361$ .

Thus, the stopping distances required by an alfa romeo going at 60 mph and at 140 mph,

$d_{60mph} =0.0361 \times (60\ mph)^2 =129.96\ feet$

and

$d_{140mph} =0.0361 \times (140\ mph)^2 =707.56\ feet$

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Your boss tells you that she needs a decision by the end of the day about the machine you want to purchase for your new operatio

Serga [27]

Option 3 is the answer

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4 years ago

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Calculate the amount, in grams, of an original 300 gram sample of potassium 40 remaining after 3.9 billion years.

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3 years ago

1. Which best describes why it is important for a scientist to use the metric system when recording data?

hoa [83]

<h3>1.<u> Answer;</u></h3>

A. so the data can be proven in the scientist’s next experiment

<h3><u>Explanation; </u></h3>

<em><u>Metric system is the standard or primary system that is accepted and used in science all over the world</u></em>.
<em><u>Metric system is utilized all over the word thus making it possible for scientists</u></em> to be in a position to share data verify and ascertain that the results presented by other scientists and the methods used.

<h3>2. <u>Answer;</u></h3>

A. resistance to change

<h3><u>Explanation;</u></h3>

<u><em>Pseudoscience involves a system of theories and assertions concerning the nature which appear to be scientific but in real sense they are not.</em></u> For example, astrology is viewed as pseudoscience.
Pseudoscience is characterized by; contradictory, exaggerated or unfalsifiable claims, lack of openness to evaluation by other experts, reliance on confirmation bias, etc.

<h3>3. <u>Answer;</u></h3>

A. Observable and objective

<h3><u>Explanation;</u></h3>

Scientific facts should be verifiable such that they should rest upon sense data, they should be based on evidence that is verifiable.

<em><u>Scientific facts should be open to further investigation, that is they should be falsifiable and repeatable. Also they should observable and objective</u></em>. They should open to further investigations and also flexible in case new facts emerge they can be changed.

<h3>4. <u>Answer;</u></h3>

D. Ethics

<h3><u>Explanation;</u></h3>

Since research involves humans participants and also human subjects, it involves complex and specific ethical, legal social and political notions.
<em><u>Ethics in research entails the evaluation of ethical issues that are raised when human beings as involved as participants or subjects in research</u></em>
<em><u>The major problem with the testing of the Ebola vaccines will be the recruitment of people who are going to volunteer to have the Ebola virus inserted into their system </u></em>so that the potency of the vaccines can be tested. A lot of ethical challenges surround this.

<h3>5. <u>Answer;</u></h3>

Pseudoscience is often based only on opinions.
Pseudoscience often involves explanations of beliefs.

Pseudoscience includes subjective ideas.

<h3><u>Explanation;</u></h3>

<u><em>Pseudoscience involves a system of theories and assertions concerning the nature which appear to be scientific but in real sense they are not.</em></u>

<em>Pseudoscience is </em>characterized by; contradictory, exaggerated or unfalsifiable claims, lack of openness to evaluation by other experts, reliance on confirmation bias, etc.

<h3>6.<u> Answer;</u></h3>

A objective

Science does not rely <em><u>objective </u></em>on ideas based on opinions instead of facts because science works to avoid the influence of opinions and beliefs.

<h3><u>Explanation;</u></h3>

<em><u>Science knowledge is objective which means the ability to observe and accept facts as they are, and not as individuals would want them to be. </u></em>
<u><em>Objectivity entails the ability to guard science knowledge against their own biases, wishes, values, beliefs and preferences. </em></u>

<h3>7. <u>Answer;</u></h3>

A. Process and facts, because they are using a systematic method to measure and then record data

<h3><u>Explanation;</u></h3>

<em><u>Scientists and researchers use scientific investigation to answer questions about the daily occurrence of certain events about the world. It also entails communicating the outcome or results to the individuals around the world.</u></em>
<em><u>Scientific investigation may be descriptive, comparative or experimental investigation.</u></em>

<h3>8. <u>Answer;</u></h3>

B. Scientific, because observations of brain growth and chemicals are made carefully and repeatedly

<h3><u>Explanation;</u></h3>

<em><u>A claim refers to a statement or a conclusion that intend to answer the original problem or question. </u></em>

The claims are scientific because they are falsifiable, repeatable and reproducible, which means just like scientific experiments they can be proved.

<h3>9. <u>Answer;</u></h3>

B. There are probably very few astronauts with twin siblings.

<h3><u>Explanation;</u></h3>

<em><u>All scientific experiments should follow certain principles of proper investigation in order for the results obtained at the end of the experiment to be considered credible.</u></em>

<em><u>A well designed scientific experiment should have features that allow scientists to eliminate extraneous variables as an explanation for the relationship observed between dependent variable and independent variables.</u></em>

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alex41 [277]

Using K.E=1/2MV^2
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