Once the threshold voltage triggers an action potential, what causes action potentials to be generated?
a. Lons channels are opened and positive ions diffuse into the cell.
b. Lons channels are opened and negative ions diffuse into the cell.
c. Lons channels are opened and positive ions diffuse out of the cell.
d. Lons channels are opened and negative ions diffuse out of the cell.
Answers
Option A . Lons channels are opened and positive ions diffuse into the cell is the correct answer because:
When the threshold voltage is reached, ion channels in the cell membrane open, allowing positive ions to flow into the cell, leading to depolarization and the generation of an action potential. This process is known as sodium influx.
Once the threshold voltage triggers an action potential, what causes action potentials to be generated is option (a): Ion channels are opened and positive ions diffuse into the cell. This influx of positive ions leads to a change in membrane potential, propagating the action potential along the neuron.
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Related Questions
Is the situation for snakes more similar to the black “insects”, the white “insects”, or the newspaper “insects”?
Answers
Answer:
The situation for snakes is more similar to the black "insects," as both snakes and black insects are usually seen as predators and can be feared by humans.
make list of the types of calls or tissues you would expect to find in a vascular bundle
Answers
Answer:
Hello that's the answer and thank you
Explanation:
make me brainliest pls
Xylem and phloem are the types of tissues found in the vascular bundle of plants.
What is the vascular bundle of plants?
In animals, the bloodstream is used to transport nutrients throughout the body. This function is carried delivered via the vascular system, a network of tissues and fibers in plants.
The xylem and the phloem are the two primary tissue types that make up the vascular system. Water and dissolved minerals are distributed upward through the plant through the xylem, first from roots to the leaves. Food is transported from the leaves to the roots through the phloem.
A mature woody stem or root's principal component is made up of xylem cells. They are arranged vertically in the heart of the plant, creating a column that transports water and minerals taken up by the roots up the stem and onto the leaves.
Transporting the food that the leaves have produced downward via the stem is a similar network of phloem cells that line the outside of the xylem.
Therefore, the xylem and phloem are present in the vascular system of plants.
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Which set of values tells us if the reaction is at equilibrium?
A
(Ca2+] = 5.8x10-SM
(CO 321 = 5.8x10-5M
B
k= 47M/s
Ksp = 3.34x107
с
Rate of precipitation = 2.1x108 M/
Rate of dissolution = 2.1x108 M/s
Answers
Answer:
C
Explanation:
A system is at equilibrium when the rates of opposing reactions are equal.
Answer A does not show the rate of reactions, it only shows concentrations of reactants.
Answer B only shows constants, it does not show rates of reactions.
The set of values that tells us if a chemical reaction is at equilibrium is: C.
Rate of precipitation = 2.1 x 10⁸ M/s.
Rate of dissolution = 2.1 x 10⁸ M/s.
What is a chemical reaction?A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, so as to produce a new chemical compound while new bonds are formed.
In Chemistry, a chemical reaction is considered to be at equilibrium when the rates of the forward and backward reactions are equal. Thus, the set of values that tells us if a chemical reaction is at equilibrium is:
Rate of precipitation = 2.1 x 10⁸ M/s.Rate of dissolution = 2.1 x 10⁸ M/s.Read more on chemical reaction here: brainly.com/question/13750908
Urgenttttttt
The graph shows projected changes in the populations of the world
Based on the information in the graph, which region's population is projected
to decline from 2010 to 2050?
A. North America
B. Africa
C. Asia
D. Europe
Answers
It needs to be 20 characters so you see how the line starts going down that’s indicating a decline
a student finds radish seeds stored in a drawer. the student decides to experiment with the seeds. the student places 25 seeds into the three following treatments:treatment 1- 25 seeds on a moist paper towel in a ziplock bag.treatment 2- 25 seeds on a dry paper towel in a ziplock bagtreatment 3- 25 seeds in moist potting soil in a plantertreatment 4- 25 seeds in dry potting soil in a planterwhich observations would help the student make an inference that water is required for the germination of seeds?
Answers
In order for the student to make an inference that water is required for the germination of seeds, they should observe the rate and success of germination in each of the four treatments.
If the seeds in treatment 1, which are on a moist paper towel, germinate and grow successfully, while the seeds in treatment 2, which are on a dry paper towel, do not, this indicates that water is necessary for germination. Similarly, if the seeds in treatment 3, which are in moist potting soil, germinate and grow successfully, while the seeds in treatment 4, which are in dry potting soil, do not, this further confirms the importance of water for seed germination.
The student should also observe any changes in the appearance of the seeds over time. If the seeds in treatments 1 and 3 show signs of swelling and splitting, while the seeds in treatments 2 and 4 remain unchanged, this is another indication that water is necessary for the germination process to occur. Overall, the success and growth of the seeds in the moist treatments compared to the dry treatments would provide strong evidence to support the inference that water is required for seed germination.
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A bright orange color begins to appear in a population of butterflies. How could evolutionary fitness help explain this change?
Answers
Answer: Orange flowers in the environment, camouflage.
Explanation:
If the butterflies were brown before they were easily spotted when sitting upon orange petalled flowers. The orange butterflies in the population survive because they blend in with the flowers they eat from their environment.
Define probability. Apply the term to a coin toss.
Answers
When flipping a coin, the likelihood of getting a tail is equal to the likelihood of getting a head, or 50%, hence the probability of receiving a tail is P(Tail) = P(T) = 1/2.
What is the probability to toss a coin?The likelihood of getting a head on a coin toss is P(Head) = P(H) = 1/2. There are just two outcomes that can occur when you toss a coin: a head (H) or a tail (T) (L). There is always a 50% chance of getting either head or tail when we flip a coin.
The probability to toss two coins having heads on both coins is 1/4 and there will be 16 outcomes if tossing 4 coins.
Therefore, if a coin is tossed, the probability might be either "head" (H) or "tail" (T). It is impossible to anticipate whether a coin toss will result in a "head" or "tail."
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Rain falls when the suspended water droplets become too. heavy, dense, hot, cold
Answers
Answer:
heavy
Explanation:
tiustltstsrllsuustrsylrsyrylylsslslylttllysslyslylysr
Answer:
precipitation
Explanation:
Wind is the horizontal movement of air, transporting energy transferred from the earth's surface as sensible and latent heat. Sensible heat is transferred by the processes of conduction and convection. Conduction transfers energy within a substance, and convection transfers energy through the vertical movement of the heated substance. Latent heat is the transfer of energy by transforming the substance itself. As you recall, water has the ability to exist as liquid, gas or solid. The transformation from liquid to gas is called evaporation; the reverse process, from gas to liquid, is called condensation; from liquid to solid is known as solidification (freezing); and from solid to liquid, fusion (melting). Water can also be transformed directly from solid to gas (sublimation), or the reverse, through a process called deposition. We will see these various processes in the formation of clouds.
Clouds are formed when air contains as much water vapor (gas) as it can hold. This is called the saturation point, and it can be reached in two ways. First, moisture accumulates until it reaches the maximum amount the volume of air can hold. The other method reduces the temperature of the moisture filled air, which in turn lowers the amount of moisture it can contain. Saturation, therefore, is reached through evaporation and condensation, respectively. When saturation occurs, moisture becomes visible water droplets in the form of fog and clouds.
largest single organ; cleans out poisons in blood and takes vitamins out of the blood
Answers
Answer:
The heart
Explanation:
I belive the heart is the largest organ. dunnk about the poison and vitamin part
Answer:
liver is the largest single organ; cleans out poisons in blood and takes vitamins out of the blood
a woman has a family history of breast cancer. she has her brca1 and brca2 genes tested, and no detrimental mutations are found. she is so relieved to know that she will not develop breast cancer. is she correct that she will not develop breast cancer?
Answers
No, she is not correct that she will not develop breast cancer.
She is inaccurate in announcing that she can be able to now no longer get breast most cancers with 100% certainty. Although, on the grounds that her BRCA1 and BRCA2 alleles have been located to haven't any mutations signalling breast cancers, which means that there is probably a totally small risk that she ought to nevertheless broaden breast most cancers.
Even though it's far relatively not going that she can be able to broaden breast cancers, there may be nevertheless a totally small risk that it is able to occur.
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What does heat capacity mean in your own words ?? Please helpppo!
Answers
Answer:
heat capacity is how much heat can be taken
Please help is it A B C or D
Answers
Answer: The answer is C
NEED HELP ASAP
Select ALL the correct answers. Which statements about tsunamis are true? Group of answer choices:
Coastal areas are safe from them.
Underwater landslides can cause them.
Earthquakes can stop them from causing flooding.
They are less destructive than typical wind-caused waves.
They are powerful ocean waves.
Answers
Answer: The Answer's are A( They are powerful ocean waves) B(Underwater landslides can cause them)
Explanation: I Got it correct on my test!
(A) They are powerful ocean waves.
(B) Underwater landslides can cause them.
Plato :)
Which two processes increase GENETIC
VARIATION?
Answers
Answer:
Meiosis is important for creating genomic diversity in a species. It accomplishes this primarily through 2 processes: independent assortment and crossing over (recombination)
Explanation:
Crossing over takes place during prophase I of meiosis I between non identical sister chromatids where they exchange their genetic materials to form new combination of genes. Hence, increases genetic variation.
Independent assortment is where homologous chromosome are arranged randomly at the equatorial plane during metaphase I of meiosis I to produce gametes with different genetic contents. This increases the genetic diversity.
During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned
Answers
Answer:
No
Explanation:
Trofim Lysenko was a Biologist in the then Soviet Union, who did not believe in the fundamental laws of science. Selective breeding is the method developed by humans to change certain characteristics of species to desired outcomes. This is based on the fact that living things have inheritable traits encoded in genes that can be passed from one generation to another.
Lysenko did not believe in this fact. He rather believed that when exposed to the right environment, plants and animals soon become adjusted to the exposure and can then develop traits that would be passed on to their offsprings. He applied this theory of his when he exposed wheat plants to cold believing that they would develop tolerance to cold. This failed woefully and resulted in severe starvation that caused the death of millions of people in the Soviet Union.
Develop a project plan, clearly indicating the project scope, deliverables, flow of deliverables, project. activities, Work Break Structure (WBS), the schedule, quality criteria, and expected risks. (50Marks) Project: Conference - You are required to organize and run a conference for 100 delegates. - The date and subject matter are set. - The focus of the conference is to bring members of Project Management profession up to date on recent procedures and standards and to developments in professional allow for networking between fellow members. Task 2 A farmer has been allocated 100 hectares of an arable land in Otavi. The farmer is not sure whether to grow vegetables or to produce livestock feed on the plot. He then approaches you for advice as to which option will maximize his benefits from an efficiency point of view. Prepare a detailed Project plan for each of the two options. (50Marks) 2. Use the Cost-Benefit Analysis Method to compare which option will bring more economic benefits. 3. What other factors would you consider in making final recommendations? 4. Use Chapters in the prescribed textbook and any other resources to guide you in the assignment. NB: Students are expected to have read Chapters in the prescribed textbook and apply the Cost-Benefit analysis method to the given project.
Answers
1. Organize and run a conference for 100 delegates in order to update project management professionals on recent procedures and standards and facilitate networking opportunities. 2. Successful execution of the conference, updated procedures and standards material, networking opportunities. 3. Pre-conference planning, venue setup, registration, keynote speeches, breakout sessions, networking activities, post-conference evaluation. 4. Project Activities: Venue selection, budgeting, speaker invitations, program development, marketing and promotion, logistics management, registration process, on-site coordination.
Task 1: Organizing a Conference
1. Project Scope:
Organize and run a conference for 100 delegates.Date and subject matter are already set.Focus on updating project management professionals on recent procedures, standards, and developments in the profession.Provide networking opportunities for conference attendees.2. Deliverables:
Successfully organized conference event.Well-informed and engaged conference attendees.Networking opportunities for project management professionals.3. Flow of Deliverables:
Pre-conference planning and preparationConference event executionPost-conference follow-up and evaluation4. Project Activities:
Venue selection and bookingDeveloping a conference program/agendaIdentifying and inviting relevant speakers/presentersManaging registrations and attendee communicationsOrganizing logistics (catering, audiovisual equipment, signage, etc.)Coordinating networking activitiesConducting post-conference evaluation and feedback collection5. Work Breakdown Structure (WBS):
Each project activity should be broken down into smaller, manageable tasks to create a comprehensive WBS.6. Schedule:
Create a timeline outlining the start and end dates of each project activity, including dependencies and milestones.7. Quality Criteria:
Define specific quality standards for each deliverable, such as the professionalism of speakers, attendee satisfaction, smooth event logistics, and effective networking opportunities.8. Expected Risks:
Identify potential risks and develop a risk management plan, including strategies to mitigate, transfer, or accept risks associated with the conference. Risks could include budget overruns, speaker cancellations, technical failures, or low attendance.Task 2: Farmer's Land Allocation
1. Project Options:
Option 1: Growing vegetables on the plot.Option 2: Producing livestock feed on the plot.2. Cost-Benefit Analysis:
Conduct a cost-benefit analysis for each option to compare the economic benefits.Identify and quantify costs associated with each option (e.g., land preparation, seeds, equipment, labor, maintenance).Identify and quantify benefits (e.g., crop yield, market prices, potential profits, savings on feed costs).3. Other Factors for Consideration:
Environmental factors (water availability, soil suitability)Market demand for vegetables and livestock feedFarmer's expertise and resourcesPotential risks and challenges specific to each option (e.g., pests, diseases, market fluctuations)To learn more about project plan, here
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This community is protecting it’s watershed by protecting natural vegetation along the river, limiting pesticides and fertilizer, and banning dumping in the river. What catastrophic event would have the biggest impact on it’s watershed?.
Answers
Flood is the catastrophic event would have the biggest impact on its watershed.
What is flood?
Flood is the overflow of water from the water resources such as rivers, lakes, and oceans.
It is one of the natural disasters that happen due to access of rain or breaking of dams etc.
Flood can affect the quality of water, there become scarcity of clean water.
People lost their home due to entry of water in the homes.
Thus, the catastrophic event is flood.
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Burn patients often develop a nosocomial infection caused by
one of the following:
a. Pseudomonas aeruginosa
b. Corynebacterium spp
c. Candida albicans
d. Staphylococcus aureus
e. Staphylococcus epide
Answers
Burn patients often develop nosocomial infections, and one of the common causative agents is Pseudomonas aeruginosa.
The correct option is a. Pseudomonas aeruginosa
Burn patients are highly susceptible to nosocomial (hospital-acquired) infections due to compromised skin barriers and weakened immune systems. These infections can arise from various bacteria and fungi commonly found in healthcare settings.
Among the options provided, Pseudomonas aeruginosa is a well-known opportunistic pathogen frequently associated with burn infections. This bacterium thrives in moist environments and is resistant to many antibiotics, making it difficult to treat. It can colonize burn wounds, leading to localized infections and potentially spreading systemically.
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How have arctic tundra herbivores adapted to their ecosystem? (Select all that apply. ) MULTIPLE CHOICE QUESTION
They can change their internal temperatures when needed.
They can survive on short plants, mosses, and lichens.
They have extra fur to protect against the cold.
They migrate to the south during the cold months
Answers
Arctic tundra herbivores are adapted to their ecosystem because c. They have extra fur to protect against the cold and b. They can survive on short plants, mosses, and lichens.
What are the adaptations in Arctic tundra herbivores?Adaptations in tundra herbivores include thick fur coats to protect them from the cold temperatures, large hooves to provide traction on the icy ground, and a diet that consists of low-energy food such as grasses, mosses, and lichens or the ability to store fat.
Therefore, with this data, we can see that adaptations in Arctic tundra herbivores are based on fur.
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Which is not a method of fossilization?
being frozen
being encased in amber
being encased in soft sand
permineralization
Answers
Answer:
soft sand is not.
Explanation:
What ocean did the Roman Empire border at its height
Answers
It stretched over 5,000 km from the Atlantic coast of northern Britain, through Europe to the Black Sea, and from there to the Red Sea and across North Africa to the Atlantic coast. The remains of the Limes today consist of vestiges of built walls, ditches, forts, fortresses, watchtowers and civilian settlements.
100 POINTS! CORRECT ANSWER GETS BRAINLIEST! Study the image of chromosomes in a human cell. Do the chromosomes in this image belong to a female or a male? Autosomes and Sex Chromosomes You may have noticed in the image of chromosomes in a human cell that all of the chromosome sets are labeled with a number except one set, which is labeled with X and Y. Together, chromosome pairs 1 through 22 makes up your autosomes, which are chromosomes that contain genes for characteristics not directly related to the sex of an organism. Most sexually reproducing species also have sex chromosomes that directly control the development of sexual characteristics. Humans have two very different sex chromosomes: X and Y. In all mammals, including humans, an organism's sex is primarily determined by the XY system. An organism with two X chromosomes is female. An organism with one X and one Y chromosome is male.
Answers
Answer:
Male
Explanation:
What is the term for the site where the muscle attaches that does not move when the muscle contracts?.
Answers
Origin is the term where the muscle attaches and does not move when the muscle contracts.
Where does a muscle connect at its real place of attachment?The process(n) of the bone is the precise location where a muscle attaches to a bone. A muscle can join to this bone protrusion to provide movement.
What ties a bone and a muscle together?Bone to the muscle is joined by a tendon, and bone to bone is joined by a ligament. The process(n) of the bone is the precise location where a muscle attaches to a bone. A muscle can join to this bone protrusion to provide movement.
What are the location of a muscle's origin and insertion?The point of attachment known as the insertion moves when the muscle contracts, whereas the point of attachment known as the origin, does not. Prime movers, also known as agonists, are muscles and muscle groups that actively carry out particular movements.
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please!!!!! urgent!!!!
Answers
Answer:
An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom), or bound to the nucleus of an atom. Electrons in atoms exist in spherical shells of various radii, representing energy levels. ... The charge on a single electron is considered as the unit electrical charge
There are y students trying out for a soccer team. only 11 will be chosen. how many will not be chosen
Answers
If there are "y" students trying out for a soccer team and only 11 will be chosen, then the number of students who will not be chosen is y - 11.
In this case, "y" represents the total number of students trying out for the soccer team. Subtracting 11 from "y" gives us the number of students who will not be chosen. This calculation assumes that all students who try out are eligible and that the selection process is based solely on choosing 11 students from the entire pool of candidates. The number of students not chosen can vary depending on the total number of students participating in the tryouts.
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can somebody help me please rn for question one.
Answers
An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a/an
Answers
Answer:
Heterotroph
Explanation:
A heterotroph is an organism that ingests or absorbs organic carbon in order to be able to produce energy and synthesize compounds to maintain its life.
I think this is the answer. It may be autotroph if im wrong.
1. List the major contributors to modern biology concepts and in your own words, briefly describe their work. 2. Explain and briefly describe the geological time scale. How does it relate to the science of biology? 3. List and briefly describe in your own words the four main points of Darwin's theory? 4. Does the theory of natural selection conflict with environmental issues? Why or why not? Explain. 5. What is the importance of the use of Latin in science? How else do we use Latin today?
Answers
Answer:
Explanation:2. the geological time scale, the ridiculously complex scale we use to describe and divide the history of the Earth into different sections.
3. The four key points of Darwin's Theory of Evolution are: individuals of a species are not identical; traits are passed from generation to generation; more offspring are born than can survive; and only the survivors of the competition for resources will reproduce.
4. The concept of fitness as a measure for a species’ success in natural selection is central to the theory of evolution. We here investigate how reproduction rates which are not constant but vary in response to environmental fluctuations, influence a species’ prosperity and thereby its fitness. Interestingly, we find that not only larger growth rates but also reduced sensitivities to environmental changes substantially increase the fitness. Thereby, depending on the noise level of the environment, it might be an evolutionary successful strategy to minimize this sensitivity rather than to optimize the reproduction speed. Also for neutral evolution, where species with exactly the same properties compete, variability in the growth rates plays a crucial role. The time for one species to fixate is strongly reduced in the presence of environmental noise. Hence, environmental fluctuations constitute a possible explanation for effective population sizes inferred from genetic data that often are much smaller than the census population size.
Why is earth interior layered??
Answers
Answer:
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Explanation:
MACROMOLECULES & BIOCHEMICAL REACTIO
atoms.
All organisms are composed of ORGANIC MOLECULES which contain.
is stored in the bonds that link these units together.
1. PROTEINS - molecules composed of chains of