what is the neuromuscular junction? multiple choice question. it is where the synaptic bulb attached to the t-tubule. it is the site in the spinal cord where nerve impulses from the somatic receptors are received. it is the passageway into the muscle group for arteries and veins. it is the site where the nerve fiber innervates the muscle fiber.
Answers
The neuromuscular junction is the site where the nerve fiber innervates the muscle fiber (option 4). It is a specialized synapse between a motor neuron and a skeletal muscle fiber.
When an action potential reaches the end of the motor neuron, it triggers the release of a neurotransmitter called acetylcholine, which diffuses across the synaptic cleft and binds to receptors on the muscle fiber membrane. This initiates a series of events that ultimately lead to muscle contraction. The neuromuscular junction is the specialized synapse between a motor neuron and a skeletal muscle fiber. It is the site where the nerve fiber innervates the muscle fiber, and the site where nerve impulses are transmitted to the muscle fiber, leading to muscle contraction. When an action potential reaches the end of a motor neuron, it triggers the release of a neurotransmitter called acetylcholine into the neuromuscular junction. Acetylcholine binds to receptors on the muscle fiber, causing depolarization of the muscle membrane, which triggers the release of calcium ions and ultimately leads to muscle contraction. The neuromuscular junction is a crucial component of the motor system, as it allows for precise control of muscle movement.
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Related Questions
why cell is called the basic unit of life
Answers
The cell is the smallest unit of life.
a mechanism for evolution in nature
Answers
Answer:
Natural selection
Explanation:
Have a great day!
Answer:
natural selection
Explanation:
natural selection is one of many mechanisms for evolution in nature. it's one of the most viewed mechanisms for evolution. Natural selection occurs when one allele makes an organism that is more or less fit, that has the ability to survive and reproduce.
hope this helps :)
what are some strengths and weaknesses for cell model?
Answers
Answer:
cells have limitations, when a cell is stronger it could target other cells. When your cell is weak it can often mean a disease has occurred.
Explanation:
Oceans currents are in constant motion. What are some of the effects of these currents?
Answers
Answer:
The ocean currents carry cold water from the polar regions to equatorial regions
The wind blowing over warm currents are moisture laden and thus cause rainfall in the coastal areas.
I hope this helps
What determines the sequence of amino acids in a protein?
Answers
The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene that codes for that protein. Genes are segments of DNA (deoxyribonucleic acid) that contain the instructions for building proteins.
The process begins with transcription, where DNA is transcribed into a complementary messenger RNA (mRNA) molecule. The mRNA then moves to the ribosomes, where translation takes place.
During translation, the mRNA sequence is read in sets of three nucleotides called codons. Each codon corresponds to a specific amino acid.
The sequence of codons in the mRNA determines the sequence of amino acids that will be assembled to form the protein. The genetic code, a universal code shared by all living organisms, specifies which codons code for which amino acids.
Therefore, the DNA sequence in the gene ultimately determines the sequence of amino acids in a protein, influencing its structure, function, and overall biological activity.
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b. Write down the major functions of blood circulatory system.
Answers
Answer:
The circulatory system is responsible for many functions that we perform.
it transports oxygen and nutrient throughout the human body.
The blood carries useful substances to the cells and takes away the waste products of the cells, which include urea, carbon dioxide and other metabolic wastes.
blood carries white blood cells and platelets, which help protect the body by clotting wounds and fighting off pathogens.
Hope this helps (●'◡'●)
Define plumule, radicle, coleoptile, coleorhiza, hypocotyl, after-ripening, stratification, and vivipary.
Answers
Plumule: Embryonic shoot; Radicle: Embryonic root; Coleoptile: Sheath covering shoot; Coleorhiza: Sheath covering root; Hypocotyl: Connection between root and shoot. After-ripening: Maturation of dormant seeds. Stratification: Controlled seed exposure to break dormancy. Vivipary: Seeds germinate while attached.
1. Plumule: The embryonic shoot of a plant found within a seed, which eventually develops into the stem and leaves.
2. Radicle: The embryonic root of a plant found within a seed, which grows downward to anchor the plant and absorb water and nutrients from the soil.
3. Coleoptile: A protective sheath that covers the emerging shoot (plumule) in certain monocot plants, aiding in the penetration of the soil during germination.
4. Coleorhiza: A protective sheath that surrounds the radicle in certain monocot plants, facilitating the penetration of the soil during germination.
5. Hypocotyl: The region of a plant embryo situated between the radicle and the cotyledons, which serves as the connection between the root and the shoot.
6. After-ripening: The process in which dormant seeds undergo a period of maturation or aging, leading to changes in their physiological state that promote successful germination and growth.
7. Stratification: The controlled exposure of seeds to specific environmental conditions, such as cold and moist conditions, to simulate natural winter conditions and break seed dormancy, enhancing germination.
8. Vivipary: A reproductive adaptation in certain plants where seeds germinate while still attached to the parent plant, allowing them to establish themselves before being dispersed.
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Which of the following functions in the human body are done by proteins?
A. Giving your hair its shape
B. Transporting oxygen around the body
C. Moving materials into and out of your cells
D.All of the above
Answers
Answer:
It's C
Explanation:
The shape of your hair is caused by diffrent shapes of the hair follicle and specific structure of cells.
Oxygen is transported by red blood cells.
C is caused by proteins through the membrane (ie: aquaporins, a protein which is a pathway for water in/out the cell)
Maria pushes a ball, and the ball rolls across the table. She wants to make the ball roll faster.
Maria needs to push the ball
A.
with more strength.
B.
on a different table.
C.
on the other side of the table.
D.
with less strength.
Answers
Answer: A. with more strength
Explanation:
Literally get a pencil or something and push it once normally than another time harder.
(Hopefully you'll see that it rolls faster.)
How is molecular nitrogen (N2) utilized by plants and animals?
Before it can be utilized by plants and animals, molecular nitrogen (N2) must be converted by microbes that use N2 as a replacement for
Answers
Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. ... The nitrogen is passed through the food chain by animals that consume the plants, and then released into the soil by decomposer bacteria when they die.
Answer:
Oxygen ✓
Explanation:
That's it and it's actually simple and correct
Someone plz help with all the questions
Answers
Answer:
The surface of the pond froze overnight.boughSherry needs a new break on her motorcycle before she'll be able to race.Their dog got mud in its fur from rolling in a mud puddle.factWhat is the name for the process where plants use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches?
Answers
The process by which plants use light energy to transform water, carbon dioxide, and high-energy carbohydrates like sugars and starches into oxygen is Photosynthesis.
Photosynthesis is the process by which phototrophs transform light energy into chemical energy that is later utilized to power cellular processes. Sugars, made from carbon dioxide and water, are used to store chemical energy.
According to the definition of photosynthesis, photosynthetic pigments like chlorophyll a, chlorophyll b, carotene, and xanthophyll are used exclusively in the chloroplasts. Photosynthesis is a method that all green plants and some other autotrophic organisms use to make nutrients out of carbon dioxide, water, and sunlight. Oxygen is produced as a byproduct of photosynthesis.
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Identify and describe the three ways the mutations affect organisms
Answers
Answer:
they may cause the development of a disease-causing allele
they may cause the development of a more beneficial allele
they, in some cases, may have no noticeable affect.
Explanation:
Answer:
Mutations may be beneficial, harmful, or neutral to organisms. If the change caused by a mutation is useful to the organism, then it is beneficial. If the change is damaging to an organism, then it is harmful. If the change is neither useful nor damaging, then the mutation is neutral.
Explanation:
the human fetal skeleton contains approximately ________ more bones than the adult skeleton.
Answers
The human fetal skeleton contains approximately 94 more bones than the adult skeleton.
This is because some bones in the fetal skeleton, such as those in the skull and spine, are not yet fused together and will eventually merge into larger bones as the fetus grows and develops. The fetal skeleton has around 300 bones, while the adult skeleton has about 206 bones. Some bones fuse together as the individual grows and develops, resulting in fewer bones in adulthood.
At birth, the human body has around 270 bones. However, as the individual grows and develops, some bones fuse together. By adulthood, the average human skeleton consists of 206 bones. The fusion of bones during development is a natural process known as ossification.
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Is the Once-ler greedy? Why do you think so?
Answers
The Lorax and its 2012 film version both have The Once-ler as their narrator. He is a rapacious industrialist who destroyed the entire Truffula Tree in order to produce a strange garment called a Thneed, or "a Fine Thing That All People Need."
The Once-ler one day finds a valley full of stunning Truffula trees that are home to Bar-ba-Loots, Swommee Swans, and Humming Fish. To make room for his creation, the Thneed, he chooses to chop down one of the trees. He discovers The Lorax in the tree trunk after felling a Truffula Tree. He is warned not to clear the forest for his selfish purposes. The Once-ler refuses to take advice and keeps felling trees to make things to sell.
He was unable to accept what he had done:
It's simple for us to see the Once-ler as a ruthless antagonist. He wrecked a once-beautiful and prosperous region because he was only thinking about himself. Even money didn't appear to be driving the Once-ler. He never lived in a luxurious environment and instead only consumed for the sake of unrestrained growth.
Danny DeVito Advocates for Trees and Discusses "Dr. Seuss" The Lorax:
He wasn't able to see the effects of his acts until it was too late. Once-ler was broken by the truth. He wreaked so much damage that his identity eventually crumbled. He withdrew to his house and disappeared from public view.
It's a tale of wasted talent:
The Once-ler was a true genius, despite the fact that he sometimes utilized his talents for bad. His curiosity and creativity were beyond bounds. There was no issue that he couldn't come up with a solution for. His inventions had a profound impact on society. He made significant innovations. The Lorax is a tale about lost talent as well as one that serves as a warning against greed. By the story's conclusion, nobody has any recollection of the Once-accomplishments ler's or even his identity. All of his genius was gone due to his horrible legacy. Ultimately, his extraordinary mind is simply one of the many resources that his avarice wasted.
He Was Abandoned and Used:
The Once-ler gave in to the pressures his avaricious relatives imposed on him. They lost all sense of perspective when they realized the money that could be made from the needs. His domineering mother was maybe the greediest of them all. Profits dried up as the planet became ever more poisonous and truffula fluffs decreased. When your source material has been harvested dry, it is difficult to keep up with the surge in demand. The money also ran out when the fluffs did. When the money stopped coming in, the Once-ler was left alone. also his mother. Nobody deserves to be abandoned, especially not because of money.
He is engulfed with shame:
The Once-ler is almost pathologically brash for the most of the narrative. He intends to seize anything he can, even if it means destroying it. He appears to be binge-consuming. He seems to just mindlessly eat everything in his path without even making any plans for his requirements in the future. before it is too late. The shame of his actions won't completely hit home for him until the forest is devastated and the final truffula tree falls. The Once-ler begins to live alone. He covers his face from everyone because he is ashamed of what he has done to the once-beautiful forest.
He Is Conscientious:
The Once-ler makes a surprise decision towards the end of the narrative. He then hands the final truffula tree seed to his small audience as he finishes the story. For the majority of the novel, we don't really get to know him, but now we do. He feels bad since he is aware of how awful what he did is. After causing the forest such severe harm, he wants to see it recover. Throughout the entire narrative, he is portrayed as the antagonist, a callous and self-centered individual. With this one kind deed, can he really atone for himself?
He’s Terrified Of Failure:
The final truffula seed, the secret weapon the Once-ler has been holding all along, is revealed as the story draws to a close. The story's most perplexing section is this. He has been hiding from the outside world by sitting in his home. He had yearned to see woods and animals once more for years, consumed with anguish and shame. He had the solution to his own problem in his hands the entire time. Why didn't he just put the seed in the ground himself? Considering his fear that everything he touches would result in death and ruin. He simply doesn't have faith in himself to accomplish it correctly.
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What are some of our body responses to being alone?
Answers
Answer:
Isolation has an immediate effect on the body by increasing the levels of the stress hormone, cortisol which regulates fundamental metabolic pathways in the body, from sugar levels, blood pressure to memory formation.
Advances in the study of led to a classification system based on evolutionary relationships. this new system is based on the concept of a , which contains a single common ancestor that all species within that clade descended from.
Answers
Answer:
(1) phylogeny (2) clade
Explanation: i got the quz right
Rivers pick up Fill in the blank text field 4 from the land as they flow
Answers
Answer:
I think it's sand.
Explanation:
Not so sure
The leaf shown has a color pattern of green and white.
Green
Which part of the leaf most likely produces the most
glucose?
Answers
Answer:
The green part because the chloroplast is there and chlorophyll is in the chloroplast that makes the leaf green, since it contains a green pigment. The chlorophyll takes in energy and then uses it to make glucose in the chlorophyll.
Explanation:
before a girl is born, most of the primordial oocytes in her ovaries will undergo which process?
Answers
Before a girl is born, most of the primordial oocytes in her ovaries will undergo a process called atresia. This process involves the degeneration and elimination of the majority of these oocytes.
During fetal development, the ovaries of a female fetus contain a large number of primordial oocytes, which are the earliest form of immature eggs. These oocytes are contained within structures called ovarian follicles. However, the majority of these primordial oocytes do not reach maturity and are instead eliminated through a process called atresia.
Atresia involves the degeneration and resorption of the primordial oocytes, leading to their elimination from the ovaries. This process occurs continuously throughout the life of a female, starting before birth and continuing during childhood and adulthood. By the time a girl reaches reproductive age, only a small fraction of the original primordial oocytes will remain, which will undergo further maturation and ovulation during each menstrual cycle.
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Which phrase describes a protobiont?
brown goo
primordial soup
warm little pond
early life form
Answers
Answer:
Its early life form. I got it right
Explanation:
Image listed below!————-
Answers
Answer:
if i'm not mistaken it would be 4/4 because Hmzygous dominant with hmzygous dominant will only produce Hmzygous dominant offspring
Investigators have engineered a gene that encodes a protein bearing an ER signal sequence followed by a nuclear localization signal. What would be the likely fate of that protein? The protein will be recognized by an SRP and enter the ER. Correct!
Answers
The likely fate of the protein bearing an ER signal sequence followed by a nuclear localization signal is that it will be recognized by an SRP (signal recognition particle) and enter the ER (endoplasmic reticulum). This occurs because the ER signal sequence directs the protein to the ER, and the SRP binds to the sequence to facilitate its entry into the ER.
An ER signal, also known as an endoplasmic reticulum signal, is a polypeptide sequence present at the N-terminal of a protein that directs its transport to the endoplasmic reticulum (ER). A nuclear localization signal (NLS) is a short amino acid sequence that serves as a signal for the transport of molecules from the cytoplasm to the nucleus through the nuclear pore complex (NPC).
A protein bearing an ER signal sequence followed by a nuclear localization signal is expected to be targeted to the ER by the ER signal sequence and transported through the membrane by the SRP (Signal recognition particle) pathway. The protein would then be transported to the nuclear envelope through the NPC, where it would be transported into the nucleus.
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which question can be answered using the scientific process?
A.) is it right to make people stop using plastic bags?
B.) should people be made to reuse all bags?
c.) what is the effect of plastic bags on birds
d.) is the government doing enough to fight?
Answers
The question that can be answered using the scientific processes is: (c) what is the effect of plastic bags on birds.
Scientific process is a method or procedure where any hypothesis is established and a series of steps are followed to prove it right or wrong by conducting several experiments. There are six steps in scientific processes, these are: Observation, Research, Hypothesis, Experiments, Analysis of data, and finally the conclusion.
Plastic bags are a type of containers made of polymers consisting of chemicals. These are highly hazardous to the environment as they takes hundreds of years to degrade. If ingested, the bags can cause choking and death of animals and birds.
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How is information transmitted through the nervous system? (choose every correct answer.)
Answers
Information is transmitted through the nervous system through electrical impulses.
The correct answer choice is option a
This goes to say that information in nervous system are transmitted through the electrical impulses of neurons.
The neurons are the basic and functional unit of the nervous system.
What is nervous system?The nervous system simply refers to the system of the body which helps in the coordination of all the activities which takes place in the body for proper functioning of the body system.
However, the functional unit of the nervous system is the neurons. These neurons help to relay messages or information from one part of the body to another and also to the external environment.
So therefore, information is transmitted through the nervous system through electrical impulses.
Complete question:
How is information transmitted through the nervous system? (choose every correct answer.)
a. Electrical impulses
b. Chemical messengers.
c. None of the above
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Shark Dichotomous Key
19 Prepare your own key for the five fish in Figure 3. Use the same format as the Shark
Dichotomous Key
The family names to be used are the numbers I, II, III, IV, and V. Your key should
correctly use traits that will lead to cach fish family. To help you get started the
first statements are given Statement 1 divides the five fish into two main groups
besed on body shape. Next, choose another characteristic that will divide the fish not
having a tubelike body into two groups. Continue to choose characteristics that will
separate a group into smaller groups. Write your key in the space below.
Figure 3
1. A. Fish with long tubelike body.
B. Fish with body shape not tubelike.
2. A
Family I
Go to 2
B
3. A
CO
B
4. A
B.
5. A
B
B.
6. Exchange keys with a classmate. Work through it to identify the fish. Is the key
correct? Have your classmate sign your answer sheet if your key is correct.
Answers
In biology, a dichotomous key helps to identify and classify organisms based on similar features and structures
What is a dichotomous key?A dichotomous key is a tool used in biology to identify organisms based on similarities in their structure and function.
Organisms with similarities in their structure and function will be placed under the same category and any difference will be used to separate them.
For example in the dichotomous key for Shark, the features:
Fish with long tubelike body will identify sharksFish with body shape not tubelike will be used to separate fishes that are not shark.Therefore, a dichotomous key helps to classify organisms based on similar features and structures.
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what are body building food
Answers
Answer:
Proteins
Explanation:
Red meat, peanut butter, protein shakes etc
Answer:
just go on a dirty or clean bluk
Explanation:
what is earth
please help me
Answers
Earth is a beautiful planet that revolves around a star called Sun, which is located in one of the arms of our Milky Way Galaxy. It is the only planet known to support life in the Solar System. Humans are the most intelligent civilization on this planet. It's blue when seen from space. Recently, Earth 29 spacecraft was able to land on this planet, after 28 unsuccessful landings of Earth series of spacecrafts. We were able to learn many things about humans, most important of these was the most spoken language of them, which they call English. According to experts, humans are not yet ready to know about our existence. It can take about 1 or 2 more centuries, until they are ready to know about us.
How can loss of biodiversity affect human health?
A. New sources of medicines can be gained.
B. Replacement species can be created.
C. Crucial natural food sources can be lost.
D. Resilience to change can increase.
Answers
Answer:
C. Crucial natural food sources can be lost.
Explanation:
internet
“Some viruses are programmed to reproduce by identifying bacteria, killing them, and assembling new viruses.viruses do not eat the bacteria and do not grow after they are made. Viruses are not alive. Explain two reasons why.”
Answers
1. Viruses cannot reproduce on their own: Unlike living organisms, viruses cannot reproduce on their own. They need to infect a host cell and hijack the host cell's machinery in order to replicate themselves. Once they have infected a host cell, they use the cell's energy and resources to create new copies of themselves. However, they do not have the ability to reproduce outside of a host cell.
2. Viruses do not have the ability to carry out metabolic processes: Living organisms carry out metabolic processes, such as respiration and digestion, in order to obtain energy and nutrients. Viruses do not have the ability to carry out these processes on their own. They rely entirely on the host cell to provide them with energy and nutrients. In fact, viruses do not even have the necessary machinery to carry out these processes. They lack the organelles, such as mitochondria, that are responsible for energy production in living cells.