________ is the electrical signal that typically moves from the cell body down the axon to the axon terminals. Group of answer choices threshold of excitation hyperpolarization depolarization action potential
Answers
Answer:
A nerve impulse
Explanation:
It's important to note that these signals not only connect the brain and spinal cord, but they also send signals to muscles and glands. People talk about nerve impulses when they talk about the electrical signal that goes down an axon.
Related Questions
the tree-building method must be chosen. one could use a based (phenetic) approach or a based (cladistic approach). the cladistic approach generates trees.
Answers
In phylogenetic tree construction, two primary methods are used: the phenetic and cladistic methods. Both approaches have their advantages and disadvantages, and the chosen approach is determined by the aim of the analysis.
The phenetic approach is a method of constructing a phylogenetic tree using quantitative data. It emphasizes measuring and comparing morphological and physiological characteristics. Phenetic approach assumes that the degree of similarity between organisms reflects the degree of their evolutionary relationships.
Cladistic approach is an approach to constructing phylogenetic trees that emphasizes the evolutionary relationships among organisms based on their shared derived characters, or synapomorphies. This approach emphasizes the branching order of lineages rather than the degree of similarity between them.In conclusion, it is possible to generate trees using the cladistic approach.
To know more about Phylogenetic Tree visit:
https://brainly.com/question/31027260
#SPJ11
Describe what happens to carbohydrates in the human body between ingestion and assimilation in the liver.
Answers
Carbohydrates are broken down into glucose, absorbed by the small intestine, transported to the liver, and used for energy or stored as glycogen or fat depending on the body's needs.
Insulin is a hormone produced by the pancreas that regulates the amount of glucose in the bloodstream. If there is a high amount of glucose in the bloodstream, insulin will signal to the liver and muscle cells to absorb and store the excess glucose. If there is a low amount of glucose in the bloodstream, glucagon will signal the liver to break down the stored glycogen into glucose and release it into the bloodstream to be used for energy.
When carbohydrates are ingested, they are digested in the mouth and stomach. The carbohydrates are broken down into glucose. The glucose is absorbed by the small intestine. The glucose is then transported to the liver.
The glucose is used for energy and stored as glycogen in the liver and muscles for later use. If there is an excess of glucose, it will be stored as fat in the adipose tissue.
For more such answers on Carbohydrates
https://brainly.com/question/336775
#SPJ8
For this assignment, you will investigate a timeline of warnings and decisions made during the Hurricane Katrina disaster. Then you will research hurricane forecasting and advanced warning systems and write a brief essay to report your findings
Answers
The timeline of warnings and decisions made during the Hurricane Katrina disaster begins on August 24, 2005 when the National Hurricane Center issued the first advisory on Hurricane Katrina. This advisory marked the beginning of the warning system and the start of the decision-making process. As the storm moved closer to the Gulf Coast, the warnings increased in intensity and the mandatory evacuation orders were issued. On August 29, 2005, the hurricane made landfall, causing widespread destruction and loss of life.
Essay Hurricane Forecasting and Advanced Warning Systems and write a short essay to report your findings.In the aftermath of the disaster, it became clear that the advanced warning systems and decision-making processes used by government officials were inadequate. The National Hurricane Center had issued warnings and advisories weeks in advance, but these warnings were not heeded or acted upon. As a result, the impact of the storm was much more severe than it could have been.
To prevent similar disasters in the future, advanced warning systems and decision-making processes must be improved. One of the most important advances in hurricane forecasting is the use of satellite data to track storms and predict their paths. This data can be used to issue more accurate warnings and advisories so that the public can be better prepared for a hurricane’s arrival.
In conclusion, the timeline of warnings and decisions made during the Hurricane Katrina disaster reveals the inadequacies of the advanced warning systems and decision-making processes used by government officials. To prevent similar disasters in the future, improvements must be made to both the warning systems and the decision-making processes used by government officials.
Learn more about Hurricane Katrina:
https://brainly.com/question/11343331
#SPJ4
True or false, the more lean muscle mass, the more responsive your body will be to insulin.
Answers
Answer:
True
Explanation:
A general misconception is that insulin is only involved in energy and fat metabolism. When energy needs are high, insulin transports sugar from the blood into the muscle where it can be converted into energy. When energy needs are low, insulin facilitates the conversion of excess sugar into fat where it can be stored for future use.
What is often overlooked is the powerful effect of insulin on stimulating muscle protein growth and repair. An essential action of insulin is to increase the transport into muscle of amino acids, the building blocks of protein, where they can be used for rebuilding and repair. Insulin’s anabolic effects do not end there. Insulin also plays an important role in turning on one of the metabolic switches that control protein synthesis.
This action explains why combinations of carbohydrate and protein are far more effective in stimulating protein synthesis than protein alone. Two switches are responsible for turning on protein synthesis. One is activated by protein, specifically amino acid levels in the blood, and the second by insulin. Consuming carbohydrate (which raises insulin levels) and protein in your recovery drink gives you a dual benefit. In fact, research has shown that a carbohydrate protein drink is 38% more effective than a protein drink in stimulating muscle protein synthesis post exercise.
Another important effect of insulin is inhibition of protein breakdown. At any given time, muscle protein is in a state of flux – it is being synthesized and broken down. When more protein is synthesized than broken down, you have a net gain in lean body mass. After exercise, protein degradation is higher, primarily because during extended endurance activity up to 20% of the working muscle’s energy is derived from protein. That’s why consuming protein in your sports drink offers significant advantages. It reduces the amount of muscle protein used for energy. Higher breakdown rates of protein after exercise increases muscle soreness and slows the overall recovery process. By inhibiting protein breakdown, insulin mediates a faster recovery.
The bottom line – by taking advantage of how and when insulin works and how nutrition can affect insulin activity, endurance athletes can optimize muscle recovery and achieve significant improvements in endurance performance.
nicotine from cigarette smoke causes the buildup of mucus and paralyzes the cilia that line the respiratory tract. how might these conditions affect pulmonary function tests? if smoking has led to emphysema, how would the pulmonary function tests change? g
Answers
Smoking causes a fast reduction in lung function tests (PFTs), particularly those that measure the airways' width, including forced expiratory flow for one second (FEFS) (FEV1).
The respiratory system reaches the alveolar membrane of a lungs, where gas is exchanged from of the nose with upper airway. Tobacco smoke that is inhaled travels from the mouth via the upper airway and eventually reaches the alveoli. More soluble gasses are absorbed as the smoke enters the respiratory system farther, and particles are left behind in the alveoli and airways. Smokers are at an increased risk of developing malignant and nonmalignant illnesses affecting all parts of the respiratory system, due to the high dosages of toxins given to these areas. The repair and rebuild process that restores the injured lung tissue occurs at same time the lung's defenses are coping with this constant airways.
Learn more about lung
https://brainly.com/question/13210870
#SPJ4
A flora found in the same location as the resident flora, but which remains only for a given amount of time, is called a(n) __________ flora.
Answers
The answer to the given question is the transient flora. Transitory flora refers to the bacteria which is found on the skin surface and in the mucous membranes, which is in the process of acquiring new sources of nutrients. Transitory flora are also referred to as 'passengers'.
They are able to survive on the skin surface only for a short period of time. They can be removed by a simple hand-washing operation with soap. In general, microorganisms that live on or within a host are referred to as flora. The body is home to two distinct groups of microorganisms: the transient flora and the resident flora.The transient flora consists of microorganisms that do not normally live in or on the body, but that can be acquired by contact with the environment. They are called “transient” because they do not establish themselves on the body; they are merely passing through.
Transitory flora refers to the bacteria which is found on the skin surface and in the mucous membranes, which is in the process of acquiring new sources of nutrients. Transitory flora are also referred to as 'passengers'. They are able to survive on the skin surface only for a short period of time. They can be removed by a simple hand-washing operation with soap. In general, microorganisms that live on or within a host are referred to as flora. The body is home to two distinct groups of microorganisms: the transient flora and the resident flora.The transient flora consists of microorganisms that do not normally live in or on the body, but that can be acquired by contact with the environment. They are called “transient” because they do not establish themselves on the body; they are merely passing through. The transient flora is often a source of disease-causing organisms.
To know more about flora visit:
https://brainly.com/question/30770197
#SPJ11
Answer:
A flora found in the same location as the resident flora but which remains only for a given amount of time is called a transient flora.
Explanation:
Transient flora refers to microorganisms that temporarily colonize the skin or mucous membranes but do not establish a permanent presence. These organisms are typically acquired through contact with the environment, objects, or other individuals. They include various bacteria, fungi, and viruses that are introduced to the body but are not part of the regular, established microbial community. They can be easily removed through handwashing or other hygiene practices.
Understanding the concept of transient flora is important for maintaining good hygiene and preventing the spread of pathogens. Proper hand hygiene and sanitation practices play a significant role in reducing the risk of infection by transient flora and maintaining overall health and well-being.
To know more about resident flora, click here,
https://brainly.com/question/33825589
#SPJ11
What is the period of time that elapses between the generation.
Answers
Answer: should be:
The latent period.
Explanation:
:)
what are the forces present on a lantern that is being hang on a tree?
Answers
Answer: Normal force and tension force.
which of the following statements is not true? a.a genotype is always expressed in the phenotype. b.environmental factors can alter the effects of genes. c.traits that are determined by the effect of more than one gene are known as polygenic. d.most traits are under the control of more than one gene.
Answers
Answer: A. a genotype is always expressed in the phenotype.
Explanation:
A genotype is not always expressed in the phenotype.
The genotype is an organism's genetic information, whereas a phenotype is the set of observable physical traits.
One example of this is a purple flower.
Suppose that the genotype of a flower is Bb (heterozygous). The phenotype would be the trait observed, in this case, it's the color. The phenotype would be "purple".
If I just gave you the phenotype "purple", you wouldn't be able to know the genotype because there are two possible answers; BB and Bbm which would both lead to a purple-colored flower.
Therefore, the correct answer is A.
Hope this helped!
what are the major types of nutrients you can get from food
Answers
Answer: lipids, proteins, carbohydrates, and water
Explanation:
These are the four major nutrients that you can get from food. Hope this helps!
One reason that longevity may have evolved slightly differently in humans than in other species is that:'
Answers
The social complexity, cultural practices, and advanced medical technologies have contributed to the unique evolution of longevity in humans.
How do environmental factors interact human lifespan?evolution of longevity in Humans are a highly social species that rely heavily on cooperation and communication to survive and thrive. This social complexity has likely played a role in the evolution of longevity in humans, as it may have conferred certain advantages to individuals who lived longer and were able to build strong social networks and contribute to their communities.
Additionally, humans have developed complex cultural practices that have allowed them to transmit knowledge and skills across generations, which may have contributed to their ability to adapt to changing environmental conditions and survive over the long term.
The development of advanced medical technologies and healthcare systems in modern times has also had a significant impact on human longevity, allowing people to live longer and healthier lives than ever before. This is a unique feature of human evolution, as no other species has been able to develop such sophisticated systems for managing and treating diseases and injuries.
Learn more about evolution of longevity
brainly.com/question/28215535
#SPJ11
what are milk dairy products meat and beans high in?
Answers
Explanation:
Not only are dairy foods like milk, cheese, and yogurt excellent sources of protein, but they also contain valuable calcium, and many are fortified with vitamin D.Answer:
proteins mostly , calcium and also vitamin D
You find a way to attach either a red or green fluorescent dye to nucleotides. Double-stranded dna molecules with both strands labeled red fluoresce red, those with both strands labeled green fluoresce green, and those with one strand labeled red and the other green fluoresce yellow. You grow human cells in the presence of "red" nucleotides until both dna strands of all chromosomes fluoresce red. You then allow one round of dna replication in the presence of "green" nucleotides. What pattern of fluorescence do you expect to see in the sister chromatids of each chromosome?.
Answers
The pattern of fluorescence do we expect to see in the sister chromatids of each chromosome is chromatids yellow.
Define chromosomes.The DNA molecule is bundled into chromosomes, which are thread-like objects found in the nucleus of every cell. The proteins known as histones that support the shape of each chromosome are formed of DNA that is tightly wound numerous times.
Even under a microscope, when a cell is not dividing, chromosomes cannot be seen in the nucleus of the cell. But during cell division, the DNA that constitutes chromosomes is packed more densely and becomes visible under a microscope. By monitoring chromosomes during cell division, scientists have learned most of what they know about chromosomes.
The centromere, which divides each chromosome into two "arms," is a point of constriction on each chromosome.
to know more about chromosomes check the link given below:
brainly.com/question/8240726
#SPJ4
Which of the following statements is true?
Organisms in the Plantae kingdom do not have membrane-bound organelles.
True bacteria belong in the Protista kingdom.
Organisms in the Archae kingdom or multicellular eukaryotes.
Organisms in the Animalia kingdom do not have cell walls or chloroplasts.
Answers
Answer:
Organisms in the Animalia kingdom do not have cell walls or chloroplasts.
Explanation:
This is correct because only Plantae have cell walls and chloroplasts. There are some exceptions in Protists and Bacteria with Cell Walls and Chloroplasts, but no species in Animalia has either.
Summarize the meteorite hypothesis?
Answers
The meteorite hypothesis suggests that the extinction of the dinosaurs was caused by a massive asteroid or comet impact on Earth approximately 65 million years ago.
According to this hypothesis, the impact caused widespread destruction and triggered a series of events such as tsunamis, wildfires, and a global climate change that ultimately led to the extinction of not only dinosaurs but also many other species. Evidence supporting this theory includes the discovery of a massive impact crater in Chicxulub, Mexico, as well as high levels of iridium (a rare element found in meteorites) in rock layers from the time of the extinction. However, some scientists still debate the extent of the impact and its role in the extinction event.
learn more about meteorite hypothesis
https://brainly.com/question/30426750
#SPJ11
redict what would happen if griffith had mixed some heat-killed type iiis bacteria and some heat-killed type iir bacteria and injected these into a mouse. would the mouse have contracted pneumonia and died? explain why or why not
Answers
Given that Griffith had mixed some heat-killed type III S bacteria and some heat-killed type II R bacteria and injected these into a mouse, the mouse would have contracted pneumonia and died.
This is because the experiment led to the transfer of genetic information from the dead type III S bacteria to the living type II R bacteria, resulting in a transformation of the type II R bacteria into virulent type III S bacteria.As a result, the mouse's immune system was not able to detect and fight the bacteria, and the bacteria were allowed to multiply rapidly, causing the mouse to die.
This is an important experiment that led to the discovery of bacterial transformation and the identification of DNA as the genetic material responsible for this transformation. Griffith's findings helped pave the way for the development of the field of molecular biology. Therefore, it can be concluded that Griffith's experiment had a significant impact on the scientific community.
To learn more about Griffith, click here:
https://brainly.com/question/16164303
#SPJ11
What do the arrows represent?
the magnetic field
thermal energy
light energy
the electric field
Answers
Answer:
the answer is A
Explanation:
Answer:
A. the magnetic field
Explanation:
Have a nice day/night :D
Define Metabolism.. !
Answers
Answer:
Metabolisms are the chemical processes that occur within a living organism in order to maintain life
Explanation:
Anthropologists occasionally apply their work to real-world problems but most of the time they conduct academic research directed at their academic peers. True or false?.
Answers
The correct answer for this question is True.
The term "anthropology" literally means "the science of humanity." Many disciplines, from anatomists to historians to psychologists, could claim the same lofty title. However, there is something about the anthropological study of "everything human" that distinguishes anthropologists and, in my opinion, gives us the primary right to the phrase "we study people."
Applied anthropology is the application of the discipline to address academic research and facilitate change. This is also known as anthropological practice. Academic peers, on the other hand, is primarily concerned with teaching the subject of anthropology and contributing to the field's overall knowledge base.
To know more about Anthropology, click here:
https://brainly.com/question/14736658
#SPJ4
Which of the following represents metaphase in Figure 4?
Answers
Answer:A
Explanation: because the genes are in the middle of the cell
some conditions only manifest if a person has a certain percentage of mutant mitochondria. how can people end up with different percentages of mutant mitochondria
Answers
Different percentages of mutant mitochondria in individuals can arise from various factors, including inherited mutations, somatic mutations, cell division patterns, environmental influences, age-related accumulation of mutations, and genetic predispositions.
The presence of different percentages of mutant mitochondria in individuals can occur due to various factors. One primary mechanism is mitochondrial DNA (mtDNA) mutations that can arise sporadically or be inherited maternally.
During cell division, the distribution of mutant and wild-type mitochondria can vary, leading to a varying percentage of mutant mitochondria in different tissues.
the occurrence of somatic mtDNA mutations can result in a mosaic pattern, where different cells within the same individual have varying percentages of mutant mitochondria.
Other factors like environmental influences, age-related accumulation of mutations, and genetic predispositions can also contribute to the differences in mutant mitochondrial percentages among individuals.
To know more about mutant mitochondri refer here
brainly.com/question/32883631#
#SPJ11
People can end up with different percentages of mutant mitochondria due to various factors, including the inheritance pattern of mitochondrial DNA (mtDNA) mutations, random segregation during cell division, and the presence of heteroplasmic mutations.
Mitochondrial DNA mutations can occur spontaneously or be inherited from the mother. Since mitochondria have their own DNA separate from the nuclear DNA, mutations in mitochondrial DNA can give rise to mutant mitochondria. Here's a step-by-step explanation of how people can end up with different percentages of mutant mitochondria:
1. Inheritance Pattern: If a person inherits a mitochondrial DNA mutation from their mother, all mitochondria in their body will carry the mutation. This results in a high percentage of mutant mitochondria.
2. Random Segregation: During cell division, mitochondria segregate randomly into daughter cells. This process can lead to variations in the distribution of mutant mitochondria. For example, if a cell has a mixture of mutant and normal mitochondria, the daughter cells may inherit different proportions of these mitochondria, resulting in different percentages of mutant mitochondria.
3. Heteroplasmy: Heteroplasmy refers to the presence of both normal and mutant mitochondrial DNA within an individual. It can arise from spontaneous mutations or inherited mutations with varying degrees of severity. The percentage of mutant mitochondria in different tissues or individuals can vary depending on the level of heteroplasmy. Over time, the proportion of mutant mitochondria can change due to the replication and segregation of mtDNA during cell division.
These factors contribute to the variability in the percentages of mutant mitochondria among individuals. The specific percentage of mutant mitochondria can have implications for the manifestation of certain mitochondrial diseases, as some conditions require a certain threshold of mutant mitochondria to cause symptoms.
To know more about mutant mitochondria refer here:
https://brainly.com/question/32883631#
#SPJ11
Over the years, there has been an overuse of antibiotics. This overuse has resulted in more less resistant and weaker bacteria to die off, while the more resistant bacteria are surviving. These survivors are sometimes called superbugs. What type of selection would this represent?
A.stabilizing selection
B.directional selection
C.disruptive selection
D.normal distribution
Answers
Answer:
The correct answer is - B.directional selection.
Explanation:
When a bacterial colony is exposed to an antibiotic the maximum number of the bacteria dies due to noo resistane and some of survive even with no or very less resistance to the antibiotic and reproduce.
Over many generations the survived and continuosuly divivng resitant bacteria become more and more with higher frequency and ultimately evolved to a resistance strain of the bacteria for the antibiotic. Such mutation is directional selection as the frequency of the resistance bacteria going from no resistance to a high amount of resistance is unidirectional and progresive.
Please help!!!!!!!!!!!!!!
Answers
Answer:
15
Explanation:
the atomic number is the number above the symbol. the number below is the atomic mass.
if 120 seeds are produced how many of them should grow into white flowering plants?
Answers
Select the correct answer from each drop-down menu.
Green lizards were observed in the region in the image. Changes in the geography of the region caused the formation of a stream, which divided the region into two halves. The left half developed a dark green environment, and the right half a comparatively lighter green environment. As a result, two geographically isolated populations, dark and light green lizards inhabited either side of the stream.
a stream running between two grassy regions
The region on the right has more light green lizards as a result of
. The new species will develop by way of
.
Answers
The region on the right has more light green lizards as a result of A. Natural Selection . The new species will develop by way of B. Allopatric Speciation
What is natural selection?At its core natural selection is all about how advantageous features within living organisms play out over time - think Darwins "survival of the fittest" mantra.
Our observations point towards this mechanism being at play within our study group as well; where lighter green lizards seem better adapted than darker counterparts due to superior camouflage when faced with predators or when scoping out prey sources around them.
This puts them at an advantage when it comes to survival and subsequently passing down these favorable traits onto future offspring - leading us towards an eventual increase in light green lizard numbers within that ecosystem.
Learn about Natural Selection here https://brainly.com/question/23929271
#SPJ1
Complete question:
Green lizards were observed in the region in the image. Changes in the geography of the region caused the formation of a stream, which divided the region into two halves. The left half developed a dark green environment, and the right half a comparatively lighter green environment. As a result, two geographically isolated populations, dark and light green lizards inhabited either side of the stream.
The region on the right has more light green lizards as a result of _______ . The new species will develop by way of __________ .
1.
A. Natural Selection
B. Postzygotic isolation
C. Harmful Mutation
2.
A. Sympatric Speciation
B. Allopatric Speciation
C. Convergent Evolution
Answer: A. Natural Selection. B. Allopatric Speciation
Explanation: I did test.
Imagine that a company is planning to build a new factory in your region that will provide hundreds of well-paid jobs, but will cause minor amounts of air pollution within a two-mile radius. Answer the following questions: How would you rate your support for the factory if you lived 50 miles away from its planned location? How would you rate your support for the factory if you only lived one mile away from its planned location? Explain any differences between your answers.
Answers
I'm aware that well-paying jobs would be beneficial to a large number of people, and a tiny bit of air pollution in a restricted region seems like a modest price to pay for employment opportunities. Therefore, if I lived 50 miles away from the proposed industrial location, I would be in favor of the project. However, if I merely lived a mile from the proposed facility, I could be concerned due to potential negative health consequences, offensive odors, and a likely drop in property values. If I merely lived a mile from the factory's proposed location, I would oppose it in light of these worries.
Which type of selection is illustrated by these two graphs?
A.) directional
B.) stabilizing
C.) disruptive
D.) natural
Answers
Answer:
B
Explanation:
Embryonic stem cells are undifferentiated cells. They can grow and divide giving rise to any type of tissue in a developing embryo. What must be true of the DNA in an organism's stem cells?
Answers
Answer:
Stem cells cut and repair their own DNA to promote formation of new tissues.
Explanation:
Stem cells cut itself and then repair their own DNA as a mechanism of activating genes that promote the development of new tissues. Stem cells are special type of cells that the ability to develop into many different types of cell such as muscle cells, brain cells etc. These cells are also capable to repair damaged tissues in the body.
in a typical day, what amount of water is taken by mouth?
Answers
On average, an adult should consume approximately 2.7 to 3.7 liters (about 9 to 13 cups) of water daily.
In a typical day, the amount of water taken by mouth varies depending on several factors such as age, sex, weight, activity level, and climate. Generally, health experts recommend drinking at least 8-10 glasses (64-80 ounces) of water per day. However, this is just a general guideline, and individual needs may vary. For instance, an athlete or someone living in a hot and humid climate may need to consume more water to replace lost fluids through sweat.
Apart from water, other beverages such as coffee, tea, soda, and fruit juices also contribute to the daily intake of fluids. However, it is essential to note that not all fluids are created equal, and some may contain added sugars and calories that can be harmful to health. Therefore, water remains the best option for staying hydrated throughout the day.
In addition to drinking water, many people also consume foods that contain high water content such as fruits and vegetables. These foods not only help meet daily hydration needs but also provide essential nutrients and fiber that promote overall health.
In conclusion, the amount of water taken by mouth in a typical day varies depending on several factors. However, drinking at least 8-10 glasses of water per day, consuming other hydrating fluids in moderation, and incorporating water-rich foods in the diet can help maintain optimal hydration levels and promote overall health.
Know more about Benefits of drinking water here,
https://brainly.com/question/2503615
#SPJ11
Fats and steroids are examples of which macromolecule?
Carbohydrates
Lipids
Proteins
Nucleic acids
Answers
Answer:
Lipids
Explanation:
Lipids include fats, waxes, oils, steroids, and more.
Lipids included fats, oils, steroids etc..