Put the following events that occur at the neuromuscular junction in their correct order. A-Sodium enters the muscle fiber, creating an end-plate potential. B-Neurotransmitter is released into the synaptic cleft. C-An action potential reaches the presynaptic membrane. D-Neurotransmitter binds to a receptor on the postsynaptic membrane. E-Sodium channels on the motor end plate open.
Answers
Answer:
C-An action potential reaches the presynaptic membrane.
E-Sodium channels on the motor end plate open.
A-Sodium enters the muscle fiber, creating an end-plate potential.
B-Neurotransmitter is released into the synaptic cleft.
D-Neurotransmitter binds to a receptor on the postsynaptic membrane.
Explanation:
In the neuromuscular junction, there is a presynaptic membrane, a postsynaptic membrane, and between these two, there is a gap called the synaptic cleft.
First, an action potential reaches the presynaptic membrane, causing the opening of sodium channels and the entering of Sodium ions to the muscle fiber creating an endplate potential. As a consequence of this, the neurotransmitters contained in vesicles travel down up to the presynaptic membrane, where they release their content into the synaptic cleft. Then, the neurotransmitters bind to the receptors in the ion channels of the postsynaptic terminal. This causes the opening of the ion channels and a rush of ion Sodium to the inside of the postsynaptic membrane, creating an action potential that will travel from cell to cell.
Arranging the following events based on their mode of occurrence is at the neuromuscular junction ;
An action potential reaches the presynaptic membrane ( C )Sodium channels on the motor end plate open. ( E ) Sodium enters the muscle fiber, creating an end-plate potential.( A ) Neurotransmitter is released into the synaptic cleft ( B ) Neurotransmitter binds to a receptor on the postsynaptic membrane ( D )The neuromuscular junction is composed of presynaptic membrane, postsynaptic membrane and a synaptic cleft. The events that occurs at the neuromuscular joints starts with an action potential reaching the presynaptic membrane which leads to the entrance of sodium ion into muscle fibers due to the opening of the sodium channels. The neurotransmitter travels through the presynaptic membrane and empties its content into the synaptic cleft.
Hence we can conclude that Arranging the following events based on their mode of occurrence is at the neuromuscular junction is ; C , E , A , B and D
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Related Questions
Being nervous interferes with sexual arousal. Explain why, with reference to the sympathetic and parasympathetic nervous systems.
Answers
Answer:
When one is nervous activates the sympathetic system and the irrigation towards the cardiac and muscular zone is increased, increases the arterial tension and the respiratory rate.
That is why the blood or blood volume is dispersed in these organs to be able to render efficiently in a moment of stress or flight for the human.
When we have sexual intercourse and there is sexual excitement, a large part of the blood volume goes to the reproductive organs to be able to irrigate the area and produce said excitement, if we are stressed in an alert situation, it will be harmed by the priority body to irrigate the main areas like heart and muscle.
Explanation:
It is important to clarify that the physiological stress in humans is a normal situation, thanks to the presence of cortisol and it is what keeps us active, but if it increases due to anxiety or overwork, psychological problems, etc., it will no longer be physiological due to that is in excess.
Thus, sexual arousal will also be affected by the psychological impotence generated by excess mental stress outside the vascular pattern.
2. Research how antibiotics affect bacterial cells. Which cell structure(s) are typically targeted? Based on this information do you think human cells are affected by the antibiotics? Include references to information sources used.
Answers
Answer:antibiotics produce antigens that kills bacteria....our WBC's also protect our body by producing antigens
Explanation:
No its limited use for human is good bcz its their body need over use affect kidneys
Answer:
press dat crown for meh
Explanation:
What are ways that humans can lower bio diversity as they use the environment
Answers
Answer:
1. Reduce the misuse of land.
2. Reduce climate change.
3. Reduce invasive species.
How long does it take for bugs to die?
Answers
A population of fish exhibits multiple variations in color, size and mouth structure; however, there does not appear to be any selective advantage for these traits because all individuals are allowed to breed and survive! Which of the following is most likely occurring in this fish population?
Answers
Answer:
This population of fish is undergoing the process of Genetic diversity
Explanation:
The phenomenon known as Genetic diversity is described as variation that occurs within a species or community. Individual organisms are unique owing to their genetic makeup. Ample variation within a population, or genetically diverse population, allows it to better survive various sorts of stresses from the environment, ensuring better survival of the species.
Which describes the four cells that are produced at the end of meiosis? identical haploid cells genetically different diploid cells genetically different haploid cells identical diploid cells
Answers
Answer:In many ways, meiosis is a lot like mitosis. The cell goes through similar stages and uses similar strategies to organize and separate chromosomes. In meiosis, however, the cell has a more complex task. It still needs to separate sister chromatids (the two halves of a duplicated chromosome), as in mitosis. But it must also separate homologous chromosomes, the similar but nonidentical chromosome pairs an organism receives from its two parents.
Explanation:Mitosis(Opens in a new window)(Opens in a new window) is used for almost all of your body’s cell division needs. It adds new cells during development and replaces old and worn-out cells throughout your life. The goal of mitosis is to produce daughter cells that are genetically identical to their mothers, with not a single chromosome more or less.
Meiosis, on the other hand, is used for just one purpose in the human body: the production of gametes—sex cells, or sperm and eggs. Its goal is to make daughter cells with exactly half as many chromosomes as the starting cell.
To put that another way, meiosis in humans is a division process that takes us from a diploid cell—one with two sets of chromosomes—to haploid cells—ones with a single set of chromosomes. In humans, the haploid cells made in meiosis are sperm and eggs. When a sperm and an egg join in fertilization, the two haploid sets of chromosomes form a complete diploid set: a new genome.
Answer:
b
Explanation:
climbing organ of betel plant
Answers
Answer:
The climbing organ of a betel plant: Is a Root
The climbing organ of the betel plant is a root. The correct option is b).
What is the betel plant?
A betel plant is of the family Piperaceae. The plant is evergreen and has green, shiny heart-shaped leaves. It is used as a mouth freshener in India and is widely eaten.
The roots that help the plant climb up are called adventitious roots. so they are the plant's climbing organs.
Thus, the correct option is b) Root, regarding the climbing organ of the betel plant.
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The options are attached below:
a) Tendrils b) Root c) Stem d) Leaves.
You are observing a sample of cells in the lab to determine why they did not divide properly. You notice that the chromosomes are lined up in the middle of the cell, and the spindle fibers have extended towards them, but have not attached. What could be damaged?
Answers
Answer:
The kinetochore of the chromosomes
Explanation:
What could be damaged that is hindering the spindle fibers from attaching to the chromosomes are the kinetochores of the chromosomes.
At the metaphase stage of the cell division, the chromosomes align at the equator of the cell and the spindle fibers engage each chromosome at a region known as the kinetochore.
The kinetochore is made up of complex proteins and lies around the centromere region of the chromosome. The microtubules of the spindle fibers attach to this region during the metaphase stage.
If the kinetochore is damaged, it means the spindle fiber will not be able to attach to the chromosome.
Arrange the structures in the following list in the order that blood will encounter as it flows from the heart back to the heart in the cardiovascular circuit.
1. venules
2. arterioles
3. capillaries
4. elastic arteries
5. medium veins
6. large veins
7. muscular arteries
Answers
Answer:
The correct order is - 4.elastic arteries, 7.muscular arteries, 2. arterioles, 3. capillaries, 1. venules, 5. medium veins, 6.large veins
Explanation:
The cardiovascular circuit Or the pathway is the sequence of structures that takes oxygenated blood from the heart and deliver it to various parts of the body and than beings the deoxygenated blood back to the heart.
This cardiovascular circuits involves various types veins, Capillaries and arteries and heart. The correct order of the structures of order that blood will encounter as it flows from the heart back to the heart is -
4.elastic arteries, 7.muscular arteries, 2. arterioles, 3. capillaries, 1. venules, 5. medium veins, 6.large veins
Give 8 Differences each between immunization and immunity
Anyone that answers I will mark the person as brilliant
Answers
Answer:
1- The immune system develops antibodies to the disease so that it cannot make you sick again.
2- Immunization describes the actual changes your body goes through after receiving a vaccine.
3- Immunization is the process whereby a person is made immune or resistant to an infectious disease.
4- Vaccines stimulate the body’s own immune system to protect the person against subsequent disease.
5- Immunity is the capability of multicellular organisms to resist harmful microorganisms from entering their cells.
6- Immunity is the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.
7- Immunization is the action of making a person or animal immune to infection.
8- Vaccines strengthen the immune system.
PLEASE HELP!! Gas cloud 1 is likely to form a star. Gas cloud 2 is not. Based on this information, match the given conditions with each cloud. *options and pictures attached*
Answers
Answer:
Gas cloud 1: It spreads with a greater volume and less concentration of elements. Its temperature stays well below the 14 million Kelvin. It has hydrogen atoms that retain there electrons.
Gas cloud 2: Its volume shrinks and the density increase die to the gravity . Its temperature stays above the 14 million kelvin . Hydrogen atoms shed there electron.
Explanation:
As you already know, stars form within clouds of gas. These clouds have interstellar gases composed mainly of dust and hydrogen. When subjected to low temperatures, gases react and combine to form molecules that create clouds and continue to react until they form stars.
Cloud 1 has characteristics that show that it will form a star which are: It spreads with a greater volume and less concentration of elements, its temperature stays well below the 14 million Kelvin, it has hydrogen atoms that retain there electrons.
as we know that cloud 2 will not form stars we can say that its characteristics are: Its volume shrinks and the density increase die to the gravity , its temperature stays above the 14 million kelvin , hydrogen atoms shed there electron.
Answer: Gas cloud 1: Its volume shrinks and the density increase die to the gravity. Its temperature stays well below the 14 million Kelvin. It has hydrogen atoms that retain there electrons.
Gas cloud 2: It spreads with a greater volume and less concentration of elements. Its temperature stays above the 14 million kelvin . Hydrogen atoms shed there electron.
Explanation: I just took the test and these are the right answers
You are given two test tubes, A and B, each with 3 mL of starch solution. You add 1 mL of amylase to tube A, and 1 mL of water to tube B. After waiting for 30 minutes, what would you expect to see?
Answers
Answer:
CHOOSE
Explanation:
MATHEMATICSN HOLD ON
ASAP You are observing proteins in a lab for an experiment. During transport, they have started to unwind and lose their shape. You notice long strands wound into alpha helices. What level of structure are the proteins in? A. Quaternary B. Primary C. Secondary D. Tertiary
Answers
Answer:
C. Secondary
Explanation:
In proteins, the structure of local segments can be arranged into three different three-dimensional formations: alpha helices (α-helix), beta sheets (β-strand) and omega loops. An alpha helix is the most common secondary protein conformation because it has low-energy and a stable arrangement. The α-helix is formed by the interaction between amino acids of every backbone N−H hydrogen bonded with the backbone C=O group of the corresponding amino acid residue in the polypeptide chain. The α-helix motif is very common in transmembrane segments of proteins that cross the lipid bilayer.
"a man with genotype bb and a woman wth genotype BB have four children. how many of the children are likely to have blue eyes"
Answers
Answer:
No children will have blue eyes all of them carry brown eyes only.
Explanation:
The cross between a male with bb genotype and female with BB genotype will be as follows :
The gametes will be formed
male: b and b
female: B and B
By Punnett square:
B B
b Bb Bb
b Bb Bb
As all the offspring will have a heterozygous condition with dominant B (Brown) and recessive b( blue) so there are no offspring will be with the phenotype of the blue eyes.
Over one million total bases were inserted into M. capricolum. The final result was a bacterial cell that originated from M. capricolum, but behaved like and expressed the proteins of M. mycoides. This synthetic M. mycoides bacterium was also able to self-replicate, a fundamental quality of life. 71 The demonstration that completely synthetic genomes can be used to start synthetic life promises other exciting discoveries and technologies. For example, photosynthetic algae could be transplanted with genomes that would enable these organisms to produce biofuel. In fact, the ExxonMobil Research and Engineering Company has already worked out an agreement with Synthetic Genomics, the company that helped fund the JCVI research team, to start just such a project. Select one: a. True b. Not Given c. False
Answers
Answer:
True
Explanation:
The Craig Venter Institute developed the first self-replicating bacterium cell by inserting artificial genetic information (DNA) chemically synthesized in the laboratory. Interestingly, this bacterium contains a few 'watermarks' inserted in the DNA sequence as a signature of its synthetic origin derived from the laboratory data. In line with this, ExxonMobil and Synthetic Genomics Inc. are working together to develop a biotechnological technology based on the exploitation of algae biodiversity for producing biofuel at higher yields in the next years.
What are some questions that biologists might ask about the living things they study?
Answers
Molecular biology is asked about the living things they study
Question 3 (5 points)
Which macromolecule stores the most energy, and is needed by the cell in order to
produce ATP?
Nucleic acids
Carbohydrates
O Proteins
Lipids
Answers
Answer:
carbohydrates
Explanation:
Answer:
Carbohydrates
Explanation:
Carbohydrates are compounds made primarily of carbon, hydrogen, and oxygen that store the most energy. Generally, these are known as sugars. These molecules are required for cellular respiration and ATP production. Lipids and fats store energy, but are not used in ATP production. Proteins do not store energy and instead provide the raw materials for the body to build other molecules, called amino acids.
what is biodiversity Which of the following shows the correct chronological order (geologically oldest to most recent) of near or total extinctions for the organisms listed?
Answers
Answer:
Biodiversity is the diversity of living beings, be they animals or plants, which together make up the totality of life on planet Earth. In other words, the term biodiversity necessarily implies a large number of different species and genres of living beings, which interrelate with each other through food chains, sharing natural habitats or even establishing more complex links. In any case, it requires that heterogeneity that implies the existence of several different living beings from each other in a given space.
Question 17 of 25
A cactus can either have long needles (L) or short needles (1). A cactus
grower crosses two cacti. The cross is shown in the Punnett square below.
LL
LL LL
ULI
What is the phenotype ratio for this cross?
O A. One long, three short
B. Four long, zero short
O C. Two long, two short
O D. Three long, one short
PREVIOUS
Answers
Answer:
The punnet square in this question is unclear. The punnet square has been attached as an image.
Based on the punnet square, the answer is C. Two long, two short
Explanation:
This question involves a single gene coding for needle length in cactus plant. The allele for long needle (L) is dominant over the allele for short needle (l).
According to the question, two cacti were crossed with genotypes Ll and ll respectively. The following allelic combinations of gametes will be produced by each parent
Ll- L and l
ll- l and l
Using these gametes in a punnet square (as seen in the image below), four possible offsprings with genotypes: Ll and ll will be produced in a 1:1 proportion.
Ll offsprings will be phenotypically long-needled while ll offsprings will be phenotypically short-needled. Hence, two long needle offsprings and two short needle offsprings will be produced in this cross.
Which form of bacteria is matched correctly to its description? spirillum—has a rod shape and exists in chains or alone coccus—can cause MRSA and has a round shape coccus—can cause acne and has a spiral shape bacillus—has a spherical shape and can form clusters
Answers
Answer:
coccus—can cause MRSA and has a round shape
The form of bacteria is matched correctly to its description is coccus, which can cause MRSA and has a round shape.
What are the forms of bacteria?Bacteria is a microscopic living organism that can exist as free-living or in colonies.
Based on shape, bacteria can exist in the following forms:
spherical shaped (cocci)rod shaped (bacilli)spiral shaped (spirilla)comma shaped (vibrios) corkscrew (spirochaetes)Therefore, the form of bacteria is matched correctly to its description is coccus, which can cause MRSA and has a round shape.
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The temperature in a room is 56c. What would the velocity of a sound wave be at this temperature
Answers
Answer:
The temperature in a room is 56°C. The velocity of a sound wave be at this temperature would be 364.6 Hz.
Which of the following sentences correctly uses a pronoun to create emphasis?
O He, Jacob Smith, studied for 10 hours.
O He himself wrote the 20-page paper.
O He and they trained for the marathon.
O Himself worked for weeks on the project.
Answers
The correct answer is B. He himself wrote the 20-page paper.
Explanation:
Pronouns such as himself, yourself, themselves, or myself, which are known as intensive pronouns, are used to emphasize the subject of a sentence, usually by placing the pronoun right the subject or main pronoun. This can be seen in the sentence "He himself wrote the 20-page paper" because the pronoun "himself" emphasizes the action "wrote" performed by "he", which is the main subject of the sentence. According to this, it is in the second sentence a pronoun creates emphasis.
Which three organs are part of the digestive tract? salivary glands, gall bladder, appendix esophagus, stomach, small intestine teeth, tongue, mouth esophagus, liver, pancreas?
Answers
Answer:
The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system.
Writers note:
Who ever gave you that question is a horrible being. The digestive tract is quite complex. I hope I helped in some way; sorry if I confused you.
How could you use different research methods to complement each other when studying a particular process in the brain?
Answers
Answer is given below
Explanation:
The brain is a complex structure and requires different methods to be declared in order to obtain a clear illustrator. Cavalder study is a method of comparing the brain of a dead person. For example, Einstein compared the brain to the brain of ordinary people. It has been hypothesized that the proportion of glia cells in the neuron is higher in a person with a higher IQ, such as Einstein. However, it cannot be confirmed that only a specific brain is available. The study of the session helps us to identify the problem associated with defects in a particular area and eliminates the function of a specific area of the brain. For example, clots form in the frontal lobe during a stroke, which can sometimes lead to epilepsy. The disadvantage of these methods is that the brain is not active. A new method of EEG electroencephalogram that measures electrical signals if each neuron is present. It measures brain activity when the brain is active. The EEG can provide information about the normal patterns of electrical activity in the brain, and although the EEG allows the researcher to quickly observe when these changes occur in real time, the electrode measures the surface of the skull and each electrode measures brain waves from large areas to be placed on the brain. EEGs do not provide a very clear picture of brain structure. The image of the brain cannot be obtained by changing the electrode to measure the electrical signal. but there are MRI techniques to provide more specific brain images. Functional magnetic resonance imaging uses the scan method using magnetic fields to create an image of the brain in each activity field. Therefore all mixed methods can help to study the brain and related activities more deeply and effectively.Answer:
Brain is a complex structure and needs analgamation of various methods to get a clearer picture.
One method is cavalder studies where brains of dead person is compared. For instance , Einstien brain was compared with ordinary people brain. The ratio of glia cells to neuron was hypothesised to be higher in high IQ person such as Einstien. However , this cannot be ascertained as only one special brain was available.
Lession studies help us identify the problem associated with a lession in a particular area and conclude the function of specific region of brain.for example , during stroke the is clot in frontal lobe that leads to epileptic ceasure sometimes.
Drawback of these method is that brain is not active. So new method of EEG electro encephelogram which measure electrical signals if each neuron. It measures brain activity when brain is active.
the EEG can provide information about the general patterns of electrical activity within the brain, and although the EEG allows the researcher to see these changes quickly as they occur in real time, the electrodes must be placed on the surface of the skull and each electrode measures brain waves from large areas of the brain. As a result, EEGs do not provide a very clear picture of the structure of the brain. A still images of brain cannot be obtained by placing electrodes to measure electrical signal.
But MRI techniques exist to provide more specific brain images. Functional magnetic resonance imaging uses a scan method utilising magnetic field to create an image of brain in each activity area.
Thus all methods combined can help in study of brain and associated activities more profoundly and effectively.
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Why are scientists studying the effects of warming on boreal forests? How far might this forest biome move if climate projections are correct?
Answers
Answer:
Scientists studying the effects of warming on boreal forests which change the biome.
Explanation:
The main effect of warming on boreal forests is to change the biome because the plants and animals will not tolerate the increased temperature which occcurs due to climate change so the plants and animals disappeared from the boreal forests and change its biome. The animals migrated to other suitable environment where they continue its growth and increase their population. If climate projections are correct, the biome of this forest go to those places where the environment is suitable.
what might be reasons why galileo galilei failed to discorve a cell yet wsd the one who invented a microscope
Answers
Answer:
Galileo galilei was an astronomer not a biologist.
Explanation:
Galileo galilei failed to discover a cell yet the one who invented a microscope because the Galileo galilei was an Italian scientist who contributes in the field astronomy and mathematics. He was not interested in biology so he was not able to discover the cell in the presence of microscope. Galileo galilei made many theories about the universe and make improvements in the structure of telescope which enables him to study the universe.
A tumor cell with a mutation in Rb can divide in the absence of extracellular signals. A. If the Rb mutation is responsible for the increased cell division, is it likely that Rb is always active or always inactive
Answers
Answer:
The Rb will always stay active
Explanation:
The Rb, undergoing a mutation that promotes cell proliferation, the cells will proliferate excessively, either benignly or malignant, forming a tumor structure.
The Rb mutation is considered an irreversible process, which will generate an unlimited and excessive growth that is abnormal when compared to the other non-mutated cells.
The diagram shows the position of earth during solstice. select the area that would be getting around 24 hours of daylight each day.
Answers
The answer is Artic Circle Zone (red square at the top)
Explanation:
A solstice occurs two times in a year when the Sun reaches farther either the south or the north of Earth. In the image presented, there is a solstice because the sunlight reachers farther in the North. Additionally, this phenomenon occurs due to the tilt (inclination) of Earth, and it increases the number of daylight/night hours in different zones.
In the case of the Arctic Circle Zone (north pole) it is likely during the solstice, this zone has around 24 of daylight each day because almost all this zone is directly exposed to the sunlight, and therefore this will always be reached by sunrays despite the rotation of Earth (rotation of Earth in its axis). On the other hand, other zones will not be exposed to sunlight all the time because the location and rotation will cause these areas are in the dark zone of Earth during specific hours every day.
Answer: The top red square near the axis.
Explanation:
Ok, the Earth's axis is the "line" around which the Earth rotates.
This means that after a rotation, the 3 bottom red boxes will be in the dark side of the diagram ( for example, if you have a ball and you grab it with the logo facing you, when you rotate the ball, the logo will be in the other side, and you will not be able to see the logo).
Now, as the area near the axis actually does not move that much, the red square near the axis (the top red square) will be most likely getting 24 hours of light each day.
A part of an mRNA has the sequence GGA. Which change to the sequence would indicate a missense mutation
Answers
Answer:
A replacement of a letter with different letter would indicate a missense mutation. (eg. GGA would become something like GCA and it would make something completely different).
Explanation:
A missense mutation is when the RNA replicates the instructions wrong from the DNA. When RNA is transcribed to make amino acids, it will make a completely different amino acid rather than the one that is needed/blueprinted. For example, if the sequence was AAG in the RNA (Derived from TTC DNA), it would create Lys amino acid. However, if the RNA sequence was AGG (Derived from abnormal TCC DNA), it would make Arg amino acid, which is different.
Answer:
GCA
Explanation:
just took it, ap ex
The enzymes cannot metabolize the fat and the fat soluble vitamins are not absorbed to any great degree. You are now waiting on the taste test results. You are, however, a little fearful that this "fat" will not become the diet option you are hoping for because:___________
Answers
Answer:
fat is not being obsorved in body on any great degree
because the inability to metabolize fats and the poor absorption of fat-soluble vitamins indicate potential issues with the digestion and absorption of dietary fats. If the taste test results reveal that the "fat" in question is not palatable or does not meet the desired flavor profile, it could be a significant obstacle in promoting it as a favorable diet option.
This indicates that the body is encountering challenges in breaking down and utilizing dietary fats. Fat metabolism is a complex process involving enzymes that break down fats into smaller components, such as fatty acids and glycerol, which can be utilized for energy production or stored in adipose tissue. If the enzymes responsible for fat metabolism are not functioning properly, it can lead to difficulties in properly utilizing fats from the diet.
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