describe the events that lead to the generation of a nerve impulse and its conduction along a neuron
Answers
An action potential, another name for a nerve impulse, is produced and carried along a neuron through a number of intricate processes involving ion channels, pumps, and neurotransmitter molecules.
Stimulus: A stimulus, such as a shift in temperature or pressure or the presence of a chemical neurotransmitter, causes the development of a nerve impulse.
Depolarization: When an external stimulus enters a neuron's dendrites, it opens ion channels that let positively charged ions like sodium (Na+) into the cell. The membrane potential of the neuron changes abruptly to a more positive state, a process known as depolarization.
Threshold: When the membrane's depolarization reaches a specific point, or the threshold, additional ion channels begin to open and the membrane depolarizes quickly and completely. This is when the nerve impulse starts.
Depolarization of the membrane produces an electrical charge wave that propagates along the axon, the portion of the neuron that carries the nerve impulse. Action potential describes this depolarization wave. The next location along the axon is where the action potential causes the opening of ion channels, which causes depolarization to quickly spread along the axon.
Repolarization occurs when the ion channels close and the positively charged ions are expelled from the cell after the action potential has passed. Repolarization is the process by which the membrane potential shifts from positive to negative as a result. The cycle then resumes, enabling the nerve impulse to go further along the axon.
Neurotransmitter molecules are released into the synaptic cleft—the tiny area between one neuron's axon and another's dendrite—when a nerve impulse reaches the terminal ends of the axon. The following neuron sends off a new nerve impulse as a result of the neurotransmitter molecules attaching to receptors on the dendrite.
In conclusion, the creation and conduction of a nerve impulse is a complicated process that includes modifications to membrane potential, ion flow, and neurotransmitter release, enabling prompt and effective information transfer from one neuron to the next.
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Related Questions
Which is NOT involved at the beginning
of a nerve impulse?
A. reaching the threshold
B. strong stimulus
C. sodium leaving the cells
D. negative charge inside the cell
Answers
Answer: the answer would be C
Sodium ion do not leave at the beginning of the nerve impulse.
They leave after the gated channel opens up after receiving a stimulus.What is a nerve impulse? It is an electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit record of sensation from a receptor or an instruction to act to an effector.Nerve impulse begin at dendrite and then move toward the cell body of neuron.To know more about nerve impulse here
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dmitri ivanovski discovered microorganisms so small they could not be seen with a microscope. these organisms are called:
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Microorganisms so tiny they couldn't be seen under a microscope were found by Dmitri Ivanovski. These creatures are known as viruses.
A piece of nucleic acid that has been protein-coated is what makes a virus an infectious microbe. A virus cannot reproduce on its own; instead, it must infect cells in order to use the components of the host cell to create copies of itself.
A virus's main objective is to transfer its genome to the host cell so that it can be expressed by the host cell. A fully developed infectious virus is known as a virion.
However, viruses and cell-based life have several striking similarities. For instance, they have nucleic acid genomes and share your cells' genetic code. Like cell-based life, viruses can evolve and have a range of genetic variants. Viruses, therefore, seem to be in a "questionable" area even if they do not fit the criteria of life.
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Suppose you are studying engineering and you must determine the boiling point of jet fuel. Your experimental results indicate that the boiling point is 300 °C. Unfortunately, your manual lists the actual value as 325 °F. What is the percent error on your calculation? 07.69% 8.33% O 7.69 °C 8.33 °C
Answers
Answer: 7.69%
Explanation:
The percent error would be calculated as:
Estimated value - Actual value / Actual value × 100
300 - 325 / 325 × 100
= -25 / 325 × 100
= 25/325 × 100
= 7.69%
What is the science method used in mixing
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Mixing methods are thought to generate ternary, quaternary, and multi-element systems, resulting in the formation of nanocomposite hard coatings.
Compound targets are used in the deposition of hard coatings to accomplish this. A typical mixer concurrently produces two sorts of patterns: radial mixing and flow division.
Rotational circulations of a treated substance around its own create radial mixing in the first scenario. To diminish or eliminate radial gradients in temperature, velocity, and material composition, processed material is intermixed.
A processed material separates at the leading edge of each mixer element and follows the channels defined by the element shape in the case of flow division.
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what is the correct order of the bronchial tree tubes in the left lung from largest to smallest?
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The correct order of the bronchial tree tubes in the left lung from largest to smallest is: primary bronchi, secondary bronchi, tertiary bronchi, bronchioles, and alveoli.
The primary bronchi are the first branches off the trachea, one for each lung, and they then divide into the secondary bronchi, which further divide into the tertiary bronchi. The bronchioles are the smallest airways that branch off from the tertiary bronchi, and they lead to the alveoli, which are small sacs at the end of the bronchial tree where gas exchange occurs.
This order is important because each of these structures has a specific role in delivering air to the lungs and exchanging gases with the bloodstream. The larger bronchial tubes are responsible for directing air to the smaller airways, where gas exchange takes place. The alveoli are where oxygen and carbon dioxide are exchanged between the lungs and the bloodstream.
Understanding the correct order of the bronchial tree is important in diagnosing and treating respiratory illnesses and diseases.
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When a muscle receives an impulse from the nervous system, it reacts and becomes short and thick. This production of force is called _______.
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When a muscle receives an impulse from the nervous system, it reacts and becomes short and thick. This production of force is called muscle contraction.
What is nervous system?Nervous system is defined as the extremely sophisticated area of an animal that communicates messages to and from various regions of its body to coordinate its movements and sensory data. The nerves cylindrical bundles of fibers that emerge from the brain and spinal cord and repeatedly branch to innervate every part of the body are what give the nervous system its name.
Muscle contractions are brought on by an Action Potential that moves from the nerves to the muscles. The neurological system sends a signal, which triggers the onset of muscle contraction. A type of nerve cell called a motor neuron conducts the signal, an impulse known as an action potential.
Thus, when a muscle receives an impulse from the nervous system, it reacts and becomes short and thick. This production of force is called muscle contraction.
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Help i only got 5 minutes!!!!! 2 questions. 1.) how has our understanding of cells changed since the 1800s?___________________________________________________________________________________________________________________________________________________________________________________________________________.2.)Compare the functions of cells to the characteristics of life._______________________________________________________________________________________________________________________________________________________________________________________________________.
Answers
Answer: The answer is below:
Explanation:
QUESTION 1: The modern version of the cell theory includes several new ideas that reflect the knowledge that has been gained since the mid-1800s. These include the knowledge that energy flows within cells, hereditary information is passed from cell to cell, and cells are made of the same basic chemical components.
QUESTION 2: The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division.
I tried my best to hurry! :)
which of these is a feature of most shield volcanoes? broad base, steep sides, violent eruptions, or thick lava?
Answers
Answer: Broad Base
Explanation:
If isolated colonies do not grow on a plate, what may have happened ?
Answers
Answer:
If you cannot rescue the strain you will have to obtain a fresh culture. Problem: • The culture plate has colonies that do not look like most of the
in a few sentences tell me what you know about cells.
Answers
Answer:
Cells are the basic building blocks of living things. The human body is composed of trillions of cells, all with their own specialised function.
Explanation:
Cells are made up of energy, and are composed to the human body.
What are regions of the alveololigual sulcus?
Answers
Answer:
The alveololingual sulcus is the space between the residual ridge and the tongue extending posteriorly from the lingual frenum to the retromylohyoid curtain
The following table shows data about a population of red pandas.
Data Collected from a Red Panda
Population Over Time
If you wanted to present evidence that red panda populations were becoming less diverse over time,
which choice correctly identifies the independent and dependent variables you would choose to use in
your graph?
(1 point)
Answers
The generation should be the independent variable and the nucleotide diversity of the red panda population should be the dependent variable. Consequently, the appropriate option would be:
Generation is a independent variable.Population nucleotide diversity is the dependent variable.The variable that the researcher manipulates or modifies in order to see how it affects the dependent variable is known as the independent variable. On the other hand, the variable that is measured or observed to ascertain the impact of the independent variable is known as the dependent variable,
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Which of the following statements best describes cellular respiration? A. Cellular respiration occurs in animal cells, but not plant cells. B. Carbon dioxide is a reactant and oxygen is a product in the reaction. C. The process of cellular respiration stores chemical energy from food into ATP molecules. D. Cellular respiration produces glucose to maintain homeostasis in plants and animals
Answers
the answer that you are looking for is C.
Answer:
C. The process of cellular respiration stores chemical energy from food into ATP molecules.
Explanation:
What would happen if you discovered the cell wall of a plant was missing?
Answers
Answer:
The cell would leak into the surrounding area, like blood on a cut.
Explanation:
If you know the answer to this question please help! ASAP
7th grade
Answers
Answer: B
Explanation: biotic means living abiotic means non living.
Means none lining biotic
1)Glomerulus is a tuft of blood capillaries arising from;
A) Efferent arteriole B) Renal vein C) Dorsal aorta D) Afferent arteriole
2)Find out the wrong statement regarding secondary metabolites
A) the end products of primary metabolites.
B) do not directly involve in the normal growth
C) make a selective advantage for the organism by increasing its survivability.
D) excreted out by special mechanism
Answers
Answer: D) Afferent arteriole
Explanation:
The glomerulus is a tuft of capillaries located within Bowman's capsule within the kidney. Glomerular mesangial cells structurally support the tufts. Blood enters the capillaries of the glomerulus by a single arteriole called an afferent arteriole and leaves by an efferent arteriole.
HELP, can someone fact check this?!!
Answers
Answer:
looks right to me g
Explanation:
bru pls help me like i rlly dont understand bio at all
Answers
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A process is illustrated in the diagram below.
Which process is illustrated in the diagram?
1. Gamete Formation
2. Facilitied Diffustion
3 bacterial conjunction
4 Viral reproduction
Answers
what are 2 limiting factors for snails and how do they affect the carrying capacity?
Answers
Answer:
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Explanation:
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bc,
bc
bc jlgxyltc h h h h h j huh. bdhvdnrkbd. dj d d be dbd dbd dj den d n n b hdkdb dk
If the femoral nerve was severed would that person be able to stand? why or why not?.
Answers
Answer:
Yes, but it would be hard to do so.
Explanation:
I tried to put up some information, but it said it was inappropriate.
Anyways, hope this helps! :)
Which of these animals is not a reptile?
D
a legless animal with a flexible jaw
B
a cold blooded vertebrate with scales
с
a relative of the lizard that swallows food whole
D
an animal that breathes underwater and lives in the ocean
Answers
Answer: D: a keyless animal with a flexible jaw
Explanation:
Answer:
A. A legless animal with a flexible jaw
Explanation:
The first on isn't a reptile, the second is a reptile (almost are all reptiles like this). A relative of a lizard is a reptile while you swallow is a boa constrictor. D is a croc or a snake.
10 examples of monocot plant and 10 examples of dicot plants
Answers
Answer:
THIS ARE MONOCOT PLANTS EXAMPLES:
Legumes (pea, beans, lentils, peanuts) daisies, mint, lettuce, tomato and oak are examples of dicots. Grains, (wheat, corn, rice, millet) lilies, daffodils, sugarcane, banana, palm, ginger, onions, bamboo, sugar, cone, palm tree, banana tree, and grass are examples of plants that are monocots
THIS ARE DICOTS PLANTS EXAMPLES:
Common examples of dicots include fruits like grapes and apples, trees like chestnut and oak, vegetables like soybean and carrot, and flowers like rose and hollyhock. Dicots differ from monocots (having just one cotyledon) in the seed, vascular structure, flowering, and leaf arrangement.
Answer:
Monocot = Maize Wheat Rice Sugarcane Banana Corn Grass Bamboo Millet Daffodils
Dicot = Pea Beans Lentils Peanuts Daisies Mint Lettuce Tomato Oak Mustard
Which of the following is an example of active transport in a cell? a. Calcium passing through channel proteins, from high to low solute concentration. b. Sodium moving out of the cells against its concentration gradient. c. Oxygen entering the cell without the use of energy.
d. None of the above are correct.
Answers
Sodium moving out of the cells against its concentration gradient is an example of active transport in a cell.
Active transport is a process that enables cells to move molecules or ions from an area of lower concentration to an area of higher concentration. This process requires the utilization of energy in the form of ATP (adenosine triphosphate).Sodium is moving out of the cells against its concentration gradient. This means that the concentration of sodium is higher outside the cell than inside, and the cell actively pumps sodium out against this gradient. This process involves the use of carrier proteins embedded in the cell membrane, such as the sodium-potassium pump, which utilizes ATP to move sodium ions out of the cell and potassium ions into the cell.
Active transport plays a crucial role in maintaining the concentration gradients necessary for various cellular processes. By actively transporting ions or molecules, cells can accumulate substances that are essential for their functioning, regulate the internal environment, and carry out processes like nerve impulse transmission and muscle contraction.
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does each new cell formed by mitosis have the same or diffent chromosomal material as each ohter
Answers
Mitosis have the same chromosomal material as each other they will contain the same number of chromosomes as their parent nuclei.
Cell division is the driving process of the reproduction at the cellular level. Most of the eukaryotic cells will divide in a manner where the ploidy or the number of chromosomes will remains the same, except in the case of germ cells where the number of chromosomes will be halved.
Mitosis is the phase of the cell cycle where the nucleus of a cell will be divided into two nuclei with an equal amount of genetic material in both the daughter nuclei. It succeeds the G2 phase and is succeeded by the cytoplasmic division after the separation of the nucleus.
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"If a consumer doesn’t consume any snails but does consume Big Macs, then his marginal rate of substitution between snails and Big Macs when his snail consumption is zero must be equal to the ratio of the price of snails to the price of Big Macs." Is this claim true, false or ambiguous? Justify your answer.
Answers
The claim oversimplifies the concept of MRS and assumes that the MRS between snails and Big Macs is solely determined by the price ratio, neglecting the complexity of individual preferences and other factors that may influence consumer choices. Therefore, the claim is ambiguous and cannot be definitively labeled as true or false.
The claim is ambiguous, and I will explain why.
The statement is based on the concept of the marginal rate of substitution (MRS), which measures the willingness of a consumer to give up one good in exchange for another while maintaining the same level of satisfaction. In this case, the claim suggests that the MRS between snails and Big Macs, when the consumer's snail consumption is zero, is equal to the ratio of the price of snails to the price of Big Macs.
However, without further information, it is difficult to determine the validity of the claim. The MRS typically depends on an individual's preferences and utility function, which can vary among consumers. It is not solely determined by prices.
Additionally, the claim assumes that the consumer has no preference for snails when their consumption is zero. This assumption might not hold true in practice. Preferences and choices can be complex, and a consumer's willingness to substitute between goods may not be solely determined by the prices of those goods. Other factors such as taste, health considerations, or cultural preferences can also influence the decision.
To summarize, the claim oversimplifies the concept of MRS and assumes that the MRS between snails and Big Macs is solely determined by the price ratio, neglecting the complexity of individual preferences and other factors that may influence consumer choices. Therefore, the claim is ambiguous and cannot be definitively labeled as true or false.
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What type of graph is best to use for showing the relationship between multiple sets of data? Why?
Answers
A bar graph is best to use for showing the relationship between multiple sets of data because it convey relational information in a visual manner quickly.
Define bar graph.A bar graph or chart displays categorical data using rectangular bars with heights or lengths proportional to the values they represent. Both vertical and horizontal plots of the bars are possible. Column charts are another name for vertical bar charts.
Comparisons between distinct categories are shown in a bar graph. The chart's two axes, one for measured value and the other for the specified categories under comparison, are shown. In certain bar graphs, clusters of multiple bars that represent the values of multiple measured variables are clustered together.
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why do plants invest so much energy in reproduction?
Answers
Plants invest significant energy in reproduction to ensure the survival and propagation of their species.
Reproduction is a fundamental process for the continuation of plant species. Here are some key reasons:
1. Species Survival: Reproduction allows plants to produce offspring, ensuring the survival of their species over time. By producing seeds, spores, or other reproductive structures, plants increase the chances of their genetic information being passed on to future generations.
2. Genetic Variation: The genetic information created in the reproductive process a lot of energy us consumed. This genetic diversity is essential for adapting to changing environmental conditions, combating diseases, and increasing the overall resilience of plant populations.
3. Dispersal: Plants invest energy in producing structures, such as fruits, cones, or winged seeds, that aid in the dispersal of their offspring. By dispersing to new areas, plants can colonize different habitats, reduce competition with parent plants, and find optimal conditions for growth and survival.
4. Reproductive Success: Successful reproduction leads to the establishment of new individuals, ensuring the continuation of a plant lineage.
5. Ecological Interactions: Plant reproduction often involves interactions with pollinators, such as bees, butterflies, birds, or wind.
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There are two DNA strands in the picture of question 1. These strands run in opposite directions from 5' to 3' we call these....
Answers
Answer: Antiparallel
Explanation:
DNA is composed of two strands of nucleotides. The strands each run from 5' to 3' and run in antiparallel, or opposite, directions from one another.
marsupials, together with which one of the following groups, combine to make a monophyletic assemblage?
Answers
Combined with placental mammals, marsupials form a monophyletic group. The mammalian group known as Theria is made up of marsupials and placental mammals, both of which have mammary glands and live birth.
Placental mammals provide internal nourishment for their young through a placenta, in contrast to marsupials, which give birth to relatively undeveloped young and complete their development in an external pouch.
In spite of these regenerative contrasts, hereditary and physical examinations support the common family and close transformative connection among marsupials and placental warm blooded creatures. This blend frames a monophyletic bunch known as Mammalia, which incorporates different animals like kangaroos, koalas, and people.
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