Why does a nerve action potential increase slightly when you add 1. 0 v to the threshold voltage and stimulate the nerve?
Answers
When you add 1.0 V to the threshold voltage and stimulate a nerve, the nerve action potential increases slightly. This is because the threshold voltage is the minimum voltage required to trigger an action potential in the nerve. By adding 1.0 V to this threshold, you are providing an additional stimulus that exceeds the minimum requirement.
When a nerve is stimulated, a series of events occur that result in an action potential. First, a depolarizing stimulus, such as a voltage change, reaches the nerve cell membrane. This causes ion channels to open, allowing positively charged ions to enter the cell, which results in depolarization. If the depolarization reaches the threshold voltage, an action potential is initiated.
By adding 1.0 V to the threshold voltage, you are effectively increasing the depolarizing stimulus. This means that the chances of reaching the threshold voltage are greater, leading to a higher likelihood of initiating an action potential.
It is important to note that while adding 1.0 V may increase the chances of an action potential, the increase is slight. The threshold voltage is a critical value that must be reached to trigger an action potential, and going significantly above this value may not result in a significant increase in the nerve action potential.
In summary, adding 1.0 V to the threshold voltage when stimulating a nerve increases the chances of initiating an action potential. However, the increase is typically slight and may not result in a significant change in the nerve action potential.
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Related Questions
which hip bone forms the superioir part of the pelvic girlde that extends upward from the acetabulum
Answers
The ischium bone forms the superior part of the pelvic girdle.
What is the structure of the pelvic girdle?
In the bottom region of the trunk, there is a bony structure known as the pelvic girdle that resembles a ring. It joins the lower limbs to the axial skeleton. There are two types of pelvises: the bigger pelvic and the lesser pelvis.
The pelvis is made up of two paired hipbones that are joined at the pubic symphysis in front and by the sacrum in back. Each hipbone is composed of three bones: the blade-shaped ilium above and to either side, which determines the hips' width; the ischium below, on which the weight is placed when sitting; and the pubis in front. Early in maturity, all three come together at a triangle suture in the acetabulum, the cup-shaped socket that connects to the head of the femur to create the hip joint.
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Anna runs 5 km in 20 minutes. What is her speed in kilometers per hour?
Answers
Answer:
15 km/h
Explanation:
5 km in 20 min
5km is 5000m and 20 min is 20×60 =1200s
5000÷1200= 25÷6 m/s
To convert m/s to km/h we multiple by 18/5
25÷6×18÷5
15 km/h.
Please give me brainliest. :-)
Why was Mendel's work not accepted at the time?
Answers
when he presented his work to other scientists he did not communicate it well so they did not really understand it
it was published in a scientific journal that was not well known so not many people read it
he could not explain the science behind why characteristics were inherited
Which organelle is paired properly with its function?
Answers
Answer:
Chloroplasts
Explanation:
__________ occurs when a particular characteristic allows an organism to be more reproductively successful, causing that characteristic to become more prevalent in that species
Answers
Natural selection occurs when a particular characteristic allows an organism to be more reproductively successful, causing that characteristic to become more prevalent in that species.
Natural selection is the process by which certain traits become more common in a population over time. It occurs when an organism has a particular characteristic that allows them to be more reproductively successful, causing that characteristic to become more prevalent within the species. This process can be observed by looking at the traits that a species develops over time in response to a changing environment.
For an entire species, it could mean the spread of a certain color trait, type of diet, or cooperative hunting behavior. As these traits become more common in a population, they may give a species a leg up when competing for resources in its environment. This can, over time, lead to an entire group of organisms that look and/or behave differently than their predecessor.
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What type of lens correct near-sightedness? (Myopia)
A. Converging (convex)
B. Converging (concave)
Answers
Answer:
B
Explanation:
for crossing over to occur, homologous chromosomes must align precisely early in prophase i so that nonsister chromatids can exchange corresponding segments of dna. blank target 1 of 4 as a result of crossing over, sister chromatids are no longer identical to each other. blank target 2 of 4 crossing over occurs at the ends of chromosomes, rather than near the centromeres. blank target 3 of 4 crossing over prevents homologous chromosomes from separating during meiosis i. blank
Answers
The correct statements about crossing over are
1. For crossing over to occur, homologous chromosomes must align precisely early in prophase I so that non-sister chromatids can exchange corresponding segments of DNA.
2. Crossing over occurs at the ends of chromosomes, rather than near the centromeres because segments of DNA near the centromeres cannot break and rejoin easily.
Thus, the correct statements are numbers 1 and 2.
What is crossing over?Crossing over is unique to meiosis. Its occurrence depends on specific events early in prophase I and it has important consequences for the rest of meiosis and beyond.
Crossing over occurs during prophase I when homologous chromosomes loosely pair up along their lengths. Crossing over occurs only between non-sister chromatids within a homologous pair of chromosomes, not between the sister chromatids of a replicated chromosome. Only segments near the ends of the chromatids, not segments nearest the centromeres, can exchange DNA.
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Read the scenario below and answer the question that follows. a vervent monkey is in a tree eating bugs that are crawling along the branches. the vervent monkey sees a hawk circling overhead. the hawk is a predator of the monkeys. the vervent monkey cries out, warning the other monkeys to descend to the ground below the trees. in this scenario, what is the unconditioned stimulus for the vervent monkey’s behavior? a. the vervent monkey eating bugs b. the vervent monkey crying out c. the group of monkeys descending d. the sight of the hawk circling please select the best answer from the choices provided a b c d
Answers
The unconditioned stimulus for the vervent monkey's behavior in this scenario is d. the sight of the hawk circling.
The unconditioned stimulus for the vervent monkey's behavior in this scenario is the sight of the hawk circling.
In classical conditioning, an unconditioned stimulus (US) is a stimulus that naturally elicits a response without any prior conditioning.
In this scenario, the sight of the hawk circling is the unconditioned stimulus because it naturally triggers a response from the vervent monkey.
The presence of the hawk is a potential threat to the monkey's safety, so it instinctively reacts by crying out to warn the other monkeys and prompting them to descend to the ground. The monkey's response is an unconditioned response (UR) because it occurs naturally in the presence of the hawk without any prior learning or conditioning.
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You would like to determine whether the lac repressor binds to the operator site. Which of the following experimental techniques will allow you to do so?
Western blot
Northern blot
Southern blot
DNA footprinting
RT-PCR
Fluorescence microscopy of cells expressing GFP tagged repressor protein.
Fluorescence hybridization
PCRM ultiple choices are possible
Answers
To determine whether the lac repressor binds to the operator site, the experimental techniques of DNA footprinting and fluorescence microscopy of cells expressing GFP tagged repressor protein can be used.
DNA footprinting is a technique used to identify protein-DNA interactions. It involves labeling the DNA region of interest and incubating it with the lac repressor protein. The repressor will bind to the operator site, protecting it from enzymatic digestion. After digestion, the DNA fragments are separated by gel electrophoresis, and the presence of protected regions (footprints) indicates binding of the repressor to the operator site.
Fluorescence microscopy of cells expressing GFP tagged repressor protein can also be used to visualize the binding of the lac repressor to the operator site. In this technique, the lac repressor protein is genetically fused with green fluorescent protein (GFP). The cells expressing the GFP-tagged repressor are observed under a fluorescence microscope, and if the repressor binds to the operator site, fluorescence will be observed at the specific location of the operator site.
Other techniques listed, such as Western blot, Northern blot, Southern blot, RT-PCR, fluorescence hybridization, do not directly assess the binding of the lac repressor to the operator site and are therefore not suitable for this specific purpose.
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Chain Pickerel is a freshwater fish that is a member of the pike family. Chain Pickerels are found along the Eastern coast of answers - The dissolved oxygen of the water decreases
The salinity of the water decreases
The amount of light penetrating the water increases
The temperature of the water increases in the summer
question - Florida all the way around to Texas. Sometimes called a "jack fish" or a "southern pike," pickerel feed mainly on smaller fish, ambushing them with sharp teeth. These fish are often found throughout the state of Florida in rivers, lakes and creeks. Spawning occurs in late winter to spring among heavy aquatic weed growth or flooded grasses, in water from a few inches deep to several feet deep. Large number of adhesive eggs are scattered over vegetation. Based on this information, which of the following scenarios would impact the population of Chain Pickerel and cause a decrease in the population size?
Answers
Answer:
the dissolved oxygen of the water decreases.
the fish need the oxygen for respiration, breathing through their gills.
Explanation:
The salinity decreasing doesn't affect the pickerel, because it's a freshwater fish. no salt needed.
more light penetrating the water just means that more aquatic weed or grasses would grow, giving the pickerel more area to spawn their eggs.
temperature increase in the summer has no affect on the fish, since the spawning happens in late winter.
n
How does water heat Earth?
Water traps heat and holds it deep inside the ocean.
Water transports nutrients and waste.
Water carries heat from the equator toward the poles.
Water from rainfall on land starts in the ocean.
Answers
Answer:
Water transport nutrients and waste
Answer:
water transport nutrients and waste i think
Explanation:
i think its right
how will you describe the pattern as electrons are distribute?
plss answer my question I need it now...... I will mark you brainliest (just answer it correctly)
Answers
Answer:
2n∧2 is the formula to find the number of electrons in each shell.
Explanation:
The Four Electronic Quantum Numbers
Quantum numbers designate specific shells, subshells, orbitals, and spins of electrons. This means that they describe completely the characteristics of an electron in an atom, i.e., they describe each unique solution to the Schrödinger equation, or the wave function, of electrons in an atom. There are a total of four quantum numbers: the principal quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number (ms). The principal quantum number,
n
n
, describes the energy of an electron and the most probable distance of the electron from the nucleus. In other words, it refers to the size of the orbital and the energy level an electron is placed in. The number of subshells, or
l
l
, describes the shape of the orbital. It can also be used to determine the number of angular nodes. The magnetic quantum number, ml, describes the energy levels in a subshell, and ms refers to the spin on the electron, which can either be up or down.
Cross between to plants (P1): one tall (TT) and one short (tt).
A. cannot predict genotype
B. could produce short plants in second generation (F2)
C. could produce short plants in first generation (F1)
D. would never produce short plants
Answers
When you cross the genotypes TT and tt for the two plants, it is only possible to get the genotype Tt.
No matter what, the answer is NOT A OR D!
If the short genotype is dominant, the answer is C.
If the tall genotype is dominant, the answer is B (Tt crossed with Tt in a punnet square produces one tt)
I hoped this helped you! Without the dominant trait being listed it was harder to answer but I did my best :)
The
describes how cells are related to living things,
cell theory
cell history
cell poem
Answers
Answer:
The answer is option A : cell theory
why is there an increase in heart rate and breathing during exercise
Answers
Answer:
the heart must pump more blood to other places of the body
Explanation:
Explanation:
As you exercise energy and oxygen are needed by the muscles to work, therefore the faster you move the quicker your heart beats inorder to supply the muscles you are using with energy and oxygen.
At three minutes of all-out high-intensity exercise, ________ of the ATP is derived from aerobic sources.
Answers
Answer:
it is d
Explanation:
D) 60%
hope this helps..
If additional DNA sequence evidence shows that yeast genes for synthesizing proteins are more similar to protein-synthesizing genes in bacteria than those in archaea, a modern systematist would_______ (A) redraw the phylogeny to show eukaryotes sharing a more recent common ancestor with bacteria than archaea (B) redraw the phylogeny to show more recent common ancestry between archaea and yeast than between eukaryotes and archaea (C) retain the phylogeny that shows a more recent common ancestor between eukaryotes and archaea (D) retain the phylogeny that shows a more recent common ancestor between bacteria and archaea
Answers
If additional DNA sequence evidence shows that yeast genes for synthesizing proteins are more similar to protein-synthesizing genes in bacteria than those in archaea, a modern systematist would redraw the phylogeny to show eukaryotes sharing a more recent common ancestor with bacteria than archaea . Option A is correct.
What is DNA sequencing?The term "DNA sequencing" refers to a common laboratory procedure for figuring out the precise order of bases, or nucleotides, in a DNA molecule. The biological information that cells require to develop and function is encoded in the sequence of the bases, which are frequently referred to by the initial letters of their chemical names: A, T, C, and G.
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Vitamin E is implicated in the prevention of chronic diseases, such as cancer, cataracts, and cardiovascular disease, because Multiple choice question. protects nerve tissue. it can prevent oxidative damage. blocks the absorption of vitamin A. it regulates gene expression.
Answers
Vitamin E is implicated in the prevention of chronic diseases due to its ability to prevent oxidative damage.
Vitamin E, a fat-soluble antioxidant, is known for its role in protecting cells from oxidative stress caused by free radicals. Oxidative damage is a major contributing factor in the development of chronic diseases such as cancer, cataracts, and cardiovascular disease.
By neutralizing free radicals, vitamin E helps prevent the oxidation of lipids and other molecules, thus reducing the risk of cellular damage. This protective effect extends to nerve tissue as well, making vitamin E important for maintaining the health of the nervous system.
Additionally, vitamin E's antioxidant properties play a crucial role in preventing chronic diseases. Oxidative stress can lead to DNA damage and mutations, which can promote the development of cancer. By reducing oxidative damage, vitamin E may help inhibit the growth of cancer cells and prevent tumor formation.
Moreover, the antioxidant effects of vitamin E contribute to maintaining the integrity of blood vessels, reducing inflammation, and preventing the oxidation of LDL cholesterol, which is a key factor in the development of cardiovascular diseases.
In conclusion, vitamin E's ability to prevent oxidative damage is a significant factor in its implication in the prevention of chronic diseases like cancer, cataracts, and cardiovascular disease. By neutralizing free radicals and protecting cells from oxidative stress, vitamin E helps maintain the overall health and well-being of various tissues and organs in the body, including nerve tissue.
However, it is important to note that while vitamin E supplementation can be beneficial, it should be used appropriately and in consultation with healthcare professionals, as excessive intake can have adverse effects.
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which area of the hypothalamus is a neural arc with a center that secretes appetite-stimulating hormones and another center that secretes appetite-suppressing hormones?
Answers
c. Arcuate nucleus is the area of the hypothalamus that is a neural arc with a center that secretes appetite-stimulating hormones and another center that secretes appetite-suppressing hormones.
In the field of biology, the arcuate nucleus can be described as an area of the hypothalamus part of the brain that contains an aggregation of neurons.
As there are different neurons present in this region of the hypothalamus, this region of the brain is characterized for controlling various neuroendocrine and physiological functions.
The arcuate nucleus has two centers. One of these centers is responsible for secreting hormones that make you hungry. This part of the arcuate nucleus increases your appetite. The other center contains hormones that suppress your appetite.
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(Enzymes) Which of the following may cause an enzyme to unfold or denature?
the enzyme's optimal pH environment
the enzyme's optimal temperature
really cold temperatures
really high temperatures
Answers
experiments by avery-mccarty-macleod were consistent with the hypothesis that dna is the genetic material. however, at the time many scientists still didn't believe that dna was the genetic material for a variety of logical reasons. which one of the following was not cited as a reason to doubt that dna was the genetic material? question 7 options: the experiments were done with bacteria, and bacteria may be too simple to have genes. avery-macleod-mccarty couldn't conclusively prove that their dna was not contaminated with a tiny amount of protein. dna is made up of only 4 nucleotides and is too simple to encode complex traits. proteins are more complex and variable in size and structure than dna. thus, it seems more likely that proteins are the genetic material. frederick griffith had earlier shown conclusively that the genetic material in streptococcus pneumoniae was a complex carbohydrate capsule.
Answers
Among the given options, the reason not cited to doubt that DNA was the genetic material is the one stating that Frederick Griffith had earlier shown conclusively that the genetic material in Streptococcus pneumoniae was a complex carbohydrate capsule.
The experiments conducted by Avery, McCarty, and MacLeod provided strong evidence supporting the hypothesis that DNA is the genetic material. However, during that time, many scientists still held doubts about DNA being the genetic material due to various logical reasons.
One reason cited to doubt DNA as the genetic material was that the experiments were done with bacteria, and some scientists believed that bacteria may be too simple to have genes. This perspective suggested that more complex organisms might possess different genetic materials.
Another reason mentioned was the inability of Avery, MacLeod, and McCarty to conclusively prove that their DNA samples were not contaminated with a tiny amount of protein. Contamination could have potentially influenced the outcomes of the experiments and skewed the results.
Furthermore, the option stating that proteins are more complex and variable in size and structure than DNA was also presented as a reason to doubt DNA as the genetic material. Some scientists believed that the complexity and variability of proteins made them more likely candidates for genetic material.
However, the option regarding Frederick Griffith's discovery of the complex carbohydrate capsule as the genetic material in Streptococcus pneumoniae was not cited as a reason to doubt DNA. This finding by Griffith was unrelated to the experiments by Avery, MacLeod, and McCarty and pertained to a different organism.
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Which substance needed for photosynthesis is absorbed from the sou?
A. Oxygen
B.water
C. carbon dioxide
D. Sunlight
Answers
Answer:
B. water
D. Sunlight
Explanation:
Im pretty sure the last word was supposed to be soil so it would be water.
If it was sun then the answer would be sunlight.
cell division gizmo answer key
Answers
look it up I might have what your looking for
Consider the statement, “If plants disappeared from Earth, all other forms of life would continue to thrive.” Is this statement correct? Why or why not? Write your response below in complete sentences. 3)
Answers
Answer:
No it is not correct.
Explanation:
It is not correct because there are certain animals that only feed on plants or only eat plants (herbivories) and if their source of food is gone, the herbivories will starve and die. So in conclusion, other forms of life will not thrive.
The diagram shows the movement of water through a
plant.
Whích two terms or phrases describe the process shown?
A. Limp guard cells
B. Open stomata
O C. Transpiration
O D. Low turgor pressure
Answers
"If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, what product will be collected?"A. Transgenic bacterial plasmidsB. Hepatitus B frusesC. Hepatitus B vaccineD. Hepatitus resistant bacteria
Answers
If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, the product collected will be transgenic bacterial plasmids, inside the bacteria, in order to proove if the transgenic plasmid actually gives the bacteria resistance to the virus, it has to be grown in an infected medium.
The correct answer is option A.
Which answer choice could best serve as a
summary to the section "time might be ripe for
toilet to tap"?
a
the plan to reuse water now seems a possible
solution as the california governor orders a 25-
percent cut in water use in some areas.
b
the plan to reuse water makes sense in cities
such as los angeles that flush gallons of
treated wastewater into the pacific ocean each
year.
c
the plan to reuse water that has been
opposed till now seems the only solution,
especially in coastal cities like los angeles
after a 25-percent water cut by the california
governor.
d
the plan to reuse water that has been heavily
opposed is now a partial solution to the water
shortage problem especially when california's
governor has ordered a 25-percent cut.
back
next
Answers
The choice that could best serve as a summary to the section "time might be ripe for toilet to tap" is option C: "The plan to reuse water that has been opposed till now seems the only solution.
Especially in coastal cities like Los Angeles after a 25-percent water cut by the California governor." This answer choice captures the main idea that the plan to reuse water.The choice that could best serve as a summary to the section "time might be ripe for toilet to tap" is option C: "The plan to reuse water that has been opposed till now seems the only solution.
Which has been previously opposed, is now seen as the only solution, particularly in coastal cities like Los Angeles, in light of the 25-percent water cut mandated by the California governor.
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A firefighter wakes in the middle of the night to the sound of an alarm. It is likely that her _____ glands have released epinephrine and norepinephrine.
Answers
The adrenal gland releases a torrent of hormones, such as epinephrine and norepinephrine as the fight or flight response when a person is stressed or scared.
What are adrenal glands?The adrenal glands are two small organs responsible for secreting hormones such as cortisol, adrenaline or noradrenaline into the bloodstream.
Characteristics of adrenal glandsThey are responsible for producing hormones that help regulate metabolism, the immune system, blood pressure, the response to stress and other essential functions.The main hormones secreted by the adrenal medulla include epinephrine (adrenaline) and norepinephrine (noradrenaline), which initiate the fight or flight response.Therefore, we can conclude that the adrenal glands release certain hormones in response to stress, some of which are vital for survival.
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Which event causes the daily pattern of shadow length and direction?
A the Suns revolution around the earth
B the Earth's rotation on its axis
C the phases of the moon
D the Earth's revolution around the sun
Answers
Describe what happens to a chemical reaction with or without an enzyme.
Answers
Answer:
Without enzymes, many chemical reactions would occur at a much slower rate because the amount of activation energy required would be far greater. When molecules are involved in a chemical reaction, enzymes act as a catalyst for either breaking them down or building them up into more complex molecules.
Explanation:
Firstly, an enzyme is a chemical substance that speeds up a chemical reaction. This means that a chemical reaction with an enzyme present would be quick or happen at a faster rate.
Enzymes also help the substance undergoing the reaction to not get used up during the process.
However, if the enzyme is absent, the chemical reaction happens very slowly and also the substance undergoing the reaction gets used up during the process.