This statement is true. An action potential in a particular cell has the same amplitude, same duration, and same shape every time.
When the membrane potential of a particular cell site rapidly increases and decreases, an action potential happens. Following this depolarization, nearby areas also experience depolarization.Nerve signals known as action potentials. In order to deliver these signals to the target tissues, neurons produce and carry them along their processes. They will either be activated, inhibited, or regulated in some way upon stimulus.A sufficient electrochemical value must be present in the appropriate stimulus for the nerve cell's negativity to be reduced to the action potential threshold. There are subthreshold, threshold, and suprathreshold stimuli in this way.An action potential cannot be induced by subthreshold stimuli. The energy or potential of threshold stimuli is sufficient to cause an action potential. Action potentials are also produced by suprathreshold stimuli.Therefore, the statement is true.
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Why do st. george, ut and salt lake city, ut have different climates?
Salt Lake City seems to be in a distinct state than southern Utah and the majority of the area east of the Wasatch.
In the vicinity of Salt Lake, several quite different geological regions are combined, so if you drive a few hours in any direction, you'll be in a very different region. For instance, if you travel east to Vernal, you'll think you're in a St. George suburb in the far southwest of the state. Even though St. George is over two hours away from Las Vegas, it is essentially a satellite of that city. It is located in a stunning red rock region with fields of black lava stone surrounding dormant volcanoes, canyons, arches, and palm trees. Geologically speaking, rather than merely politically, it seems like another planet. Culturally, anyone from Utah will feel at home in St. George, if they can endure the heat. It is still a very LDS town, but it is still managed by a small group of old-guard families who came here at Brigham Young's request nearly fifty years ago. Growing numbers of people have relocated from Northern Utah to this area, and an increasing number of people who grew up here and are happy to return are doing so now that the local economy is robust enough for them to do so.Learn more about the salt lake city with the help of the given link:
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Lysosomes function in the destruction and recycling of old organelles. group startstrue or false
Lysosomes function in the destruction and recycling of old organelles. This statement is TRUE.
What are Lysosomes?
Animal cells have membrane-bound organelles called lysosomes. Though there is considerable disagreement on the subject, it is believed that some plant cells include lysosomes. They have a single phospholipid bilayer–containing outer membrane. The hydrophilic half of the phospholipid bilayer adores water, whereas the hydrophobic half avoids it. The membrane is made up of acids and enzymes that can break down and digest macromolecules. Nucleic acids, artificial polymers, and proteins are examples of macromolecules, which are molecules containing a huge number of atoms.
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Lipids are a large group of substances that are in water. Many types of lipids with different structures and properties exist both in the body and in food. True or false?.
Answer: That is true.
Explanation: It is true because they are needed as an important part in life.
In 2008, british retailer marks & spencer introduced a slogan "plan a. Because there is no plan b. ", which included a five year 100 point ecological plan to tackle some of the biggest challenges facing its business. The plan included working with customers and suppliers to combat climate change, reduce waste, safeguard natural resources and trade ethically. Their plan seems to correspond most with the concept of.
The inclusion of customers and suppliers to reduce waste, protect natural
resources and do ethical business are parts of sustainable development.
Sustainable development is the usage of natural resources for the human needs in a way that will preserve the environment that produces the resources so they can be used in the future. Scientists argue that sustainable development has many more benefits and that it also maintains biodiversity, ensures future resources for economic stability, encourages greater efficiency and often reduces the impact of natural disasters.
The main features of sustainable development are follows:
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The domestication of plants and animals in areas near the indus, huang he, nile, and tigris-euphrates rivers resulted in the development of villages and cities. The growth of early settled communities contributed to —.
The development of political and religious institutions is what the growth of early settled communities were contributed to.
The process of domesticating wild animals and plants into cultivated and domestic forms in accordance with human objectives is known as domestication. It refers, in the purest sense, to the beginning of human control over wild animals and flora.
According to some evidence, the first attempts at domesticating plants and animals were conducted in the Old World during the Mesolithic Period. Dogs were initially tamed by hunters and gatherers of wild food plants in Central Asia at least 15,000 years ago.
Early established communities expanded as a consequence of the rise of political and religious institutions, which assisted in the domestication of plants and animals in places near rivers, leading to the creation of villages and cities.
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Membrane proteins are among the most important proteins biologically because they allow the cells to communicate with their environments. These membrane proteins are responsible for all but which process?.
The correct option is (C) regulating intake of oxygen
Membrane proteins are among the most crucial in biology because they enable communication between cells and their surroundings. Other than controlling oxygen intake, these membrane proteins are in charge of.
What roles do membrane proteins play?The proteins that interact with the cellular membrane are known as membrane proteins. It is connected to opening ion channels, detecting foreign cells, and starting growth hormone responses.
Membrane proteins serve a variety of purposes, such as the following:
Cellular communication is facilitated by it.
Keep the cell form constant.
Work in accordance with the modifications that chemical messengers make.
Through the cell membrane, distribute the information.
Start a number of reactions.
It does not control how much oxygen is taken in.
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I understand that the question you are looking for is "Membrane proteins are among the most important proteins biologically because they allow the cells to communicate with their environments. These membrane proteins are responsible for all but which process?
A) triggering ion channels
B) identifying foreign cells
C) regulating intake of oxygen
D) activating growth hormone reactions"
Group of cells that are similar in structure and work together to perform a common function are referred to as a(n):_________
In cladistics, biologists attempt to place species into groups that each include an ancestral species and all of its descendants. A group that is paraphyletic fails to accomplish this goal in what way?.
This purpose is not achieved by a paraphyletic group. It includes of an ancestral species and a few of its descendants, but not all of them.
Describe paraphyletic:In evolutionary biology, the term "paraphyletic" is used to define a group of animals that shares a common ancestor and some of the descendants, but not all of them. A group of creatures is said to be paraphyletic if any of its members have been classified as members of another group for unknown reasons.
Example of Paraphyletic:The reptilian group, which includes birds as well as turtles, tuataras, lizards, snakes, crocodiles, and other dinosaur-like reptiles, is possibly the most convincing example of a paraphyletic group. construction of a separate avian community (Aves).
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Population growth and change is most immediately experienced as changes in the ratio of:________
If the connection between the hypothalamus and pituitary were severed, damaging the neurons, the secretion of which type of chemical messenger (signal) would most directly be affected?
If the connection between the hypothalamus and pituitary gland were severed, the releasing hormone would directly be affected.
Releasing hormones are the peptide hormones secreted by the hypothalamus gland to stimulate the pituitary gland. In response to releasing hormones, the pituitary gland releases other hormones like gonadotropin, ACTH, and TSH.
The four types of releasing hormones released by the hypothalamus include:
1. Gonadotropin-releasing hormone (GnRH)
It stimulates the release of follicle-stimulating hormone (FSH) and Luteinizing hormone (LH).
2. Thyrotropin-releasing hormone (TRH)
It stimulates the release of thyroid-stimulating hormone (TSH) and prolactin from the anterior pituitary gland.
3. Growth hormone-releasing hormone (GHRH)
It stimulates the release of growth hormone from the anterior pituitary gland.
4. Corticotropin-releasing hormone (CRH)
It stimulates the release of adrenocorticotropic hormone from the anterior pituitary.
If the neurons connecting the hypothalamus and pituitary gland are damaged, the releasing hormones would be affected. Consequently, the secretion of all of the above hormones would be affected.
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G
Which statement about malaria is true?
a. Malaria is transmitted to humans through infection by the sporozoan "Plasmodium".
b. Malaria is carried by the female Anopheles mosquito.
C.
Malaria is caused by an animal-like protist.
d.
All are true.
All of the above statement provided are facts and characteristics about malaria, So The correct option is D.
Through the bites of female Anopheles mosquitoes that carries the parasites that cause malaria, people can experience this potentially fatal illness. It can be avoided and treated. The two most dangerous parasite species, Plasmodium falciparum and Plasmodium vivax, are among the five that cause malaria in humans.
Nearly half of the world's population is at the danger from malaria in 2020. Sub-Saharan Africa tops the list of the greatest number of cases and fatalities. However, there are also considerable numbers of illnesses and fatalities reported in the WHO regions of South-East Asia, Eastern Mediterranean, Western Pacific, and the Americas.
Thus, it is now concluded that Option D is the correct answer
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Is the seedling population at day 21 in hardy-weinberg equilibrium, or is evolution occurring?
(1) The population is evolving, and there appears to be selection against genotype CYCY based on the genotype frequencies at day 21 to the expected frequencies and the observed frequencies at day 7.
According to the Hardy-Weinberg equilibrium, if no unfavorable influences exist, genetic variation in a population will remain stable from one generation to the next.
The information indicates that at Day 21, the seedling population is changing. From Day 7 to Day 21, the allele frequencies have evolved. The CGCY genotype is being selected for, whereas the CYCY genotype is being rejected.
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Question correction:
Compare the genotype frequencies at day 21 to the expected frequencies and the observed frequencies at day 7. Is the seedling population at day 21 in Hardy-Weinberg equilibrium, or is evolution occurring?
The population is evolving, and there appears to be selection against genotype CYCY.The population is evolving, and there appears to be selection against genotype CGCG.The population is evolving, and there appears to be selection against genotype CGCY.The population is in Hardy-Weinberg equilibrium.why does copper carbonate change it's colour from grreen to black on heating
Copper carbonate change its color from green to black on heating due to the decomposition reaction which takes place during the process.
What is Decomposition reaction?This type of reaction requires the input of energy and is characterized by the reactant being broken down into two or more simpler products such as in the case of the compound known as copper carbonate.
The decomposition reaction of copper carbonate into Copper oxide and Carbon dioxide which can be seen in the formula given below:
CuCO₃ ⇒ CuO + CO₂
Copper oxide is black which explains the color change from green to black in the reaction.
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Some inborn determinants of health include? both genetic make-up and age social status genetic make-up age
Some inborn determinants of health include both genetic make-up and age
What are the five factors that affect health?Numerous elements may be grouped into five major categories known as the "determinants of health" to better understand how they affect health: heredity, behaviour, environmental and physical impacts, medical treatment, and social factors. These five groups are linked to one another.
Health outcomes are significantly influenced by social variables, particularly for the most disadvantaged groups. When giving therapy and care, it is important to take the patient's surroundings, education, and financial situation into account.
the variety of circumstances that affect a person's health state. the variety of individual, social, economic, and environmental elements that affect an individual's or a population's health.
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how ocean temperature affects the climate of an area
Answer:
Water's High Specific Heat Capacity
Explanation:
Water is able to absorb large amounts of heat with little to no change in temperature for itself. Therefore, when warm air flows over the ocean, the water absorbs the heat from the air and releases cool air instead. This allows coastal environments to be cooler than other areas.
Describe a chemical indicator. What is it? What is it used for? How does it work?
Please be really descriptive in your answer.
Answer:
A chemical indicator is a substance that changes color in the presence of a chemical reaction. Indicators are used in titrations to determine the point at which the reactants have been used up and the products have been formed. In acid-base titrations, indicators are used to determine the point at which the solution changes from acidic to basic. In redox titrations, indicators are used to determine the point at which the solution changes from reductive to oxidative.
Explanation:
Give me brainliest if that helped :)
I have three electron shells ,and one valence electron , who am I .
Answer:
lithium atom have three electron shells
You have a cup of warmed milk and a cup of vinegar you have a other cup but it’s empty . You pour the warmed milk and the cup of vinegar into the empty cup . (You stir for 1min and 30 sec) place a paper towel over a plastic bowl Pour the mixture into the paper towel to drain the water and filter the new substance. Is this a chemical or physical change?
In which stage of the cell cycle where the majority of the cells present?
The stage of the cell cycle where most cells are present is the interphase.
What is the cell cycle?
The cell cycle is a cycle of the different stages cells passes through in their lifetime.
There are two main stages of the cell cycle:
The interphaseThe M or mitotic phaseDifferent sub-stages characterize both the interphase and M phase.
The interphase has G1, S, G2, and G0 substages while the M phase has prophase, metaphase, anaphase, and telophase substages.
Actively dividing cells move from the M phase to the G1, S, and G2 stages. Cells that are not actively dividing move from the M phase to the G0 phase.
In other words, the G0 phase is essentially a resting phase. Most cells are in this phase, except for cells that need to keep dividing.
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Some neurons release neurotransmitter which affects neighboring cells, as well as themselves. this is an example of what type of signaling? choose any that apply.
A chemical secreted by one cell interacts with target cells nearby in paracrine signalling. The way neurotransmitters move signals between nerve cells at a synapse serves as an illustration.
After being produced, where are neurotransmitters kept?The terminal produces and stores small molecule neurotransmitters for quick release. Because they must be carried from the cell body to the terminal after being generated there, neuropeptides may release more slowly.
Small "packages" called vesicles are used to hold neurotransmitter molecules (see the picture on the right). When the vesicles containing neurotransmitters "fuse" with the membrane of the axon terminal, the neurotransmitter is released from the axon terminal and spills into the synaptic cleft
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What is photosynthesis?
The most important trigger for aldosterone release is the renin-angiotensin mechanism, mediated by the renal tubules True or false
The answer is true. The renin-angiotensin mechanism, which is carried out by the renal tubules, is the most significant catalyst for aldosterone release. Extracellular fluid is the term used to describe the fluid that cells store (ECF). Filtrate shouldn't contain blood proteins or blood cells since they are too big to fit through the filtering barrier.
What causes the renin-angiotensin system to become active?A dip in blood pressure (lower blood volume) often causes the RAAS to be activated in order to promote water and electrolyte reabsorption in the kidney, which makes up
In order to control blood pressure, the renin-angiotensin-aldosterone system also affects blood volume, salt absorption, potassium secretion, water absorption, and vascular tone. Inflammation, apoptosis, and fibrosis are a few more RAAS-related activities that have been mentioned.
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What creates a sense not only of enclosure and connection, but also movement and direction?.
Implied line conveys a sense of direction and mobility in addition to enclosure and connection.
An inferred line is what?
An inferred line often depicts a little change in plane.
They are all implied by variations in color, tone, and texture as well as by the edges of objects.
A viewer's path to follow a figure's sight is illustrated here. It directs the viewer's gaze without actually displaying a line.
For instance, in portrait drawing, an inferred line is sometimes utilized across the nose's bridge or along the jaw to make it look more like the edge of a box.
thus, this creates a sensation of movement and direction as well as confinement and connection.
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Use lesson concepts to complete the diagram to show the outcome of communication among scientists.
Space 1:
Space 2:
Space 3:
Space 4:
Answer:
where are thenquewtions
Explanation:
I don't understand if you tell me straight I'll tell you that right annswer
what types of cells are used when a bird reproduces with a caterpillar?
Phasianus colchicus is the cells used when a bird reproduces with a caterpillar. Birds reproduce by internal fertilization, during which the egg is fertilized inside the female. Like reptiles, birds have a cloaca, or a single exit and entrance for sperm, eggs, and waste. The male brings his sperm to the female cloaca. The sperm fertilizes the egg
The common pheasant is a bird in the pheasant family. The genus name comes from Latin Phasianus, the pheasant. The species name colchicus is Latin for Colchis, a country on the Black Sea where pheasants became known to Europeans
Caterpillars are basically the babies of moths and butterflies, so they don't reproduce. However, after they mature into their winged adult forms, they're free to mate and lay eggs that hatch into more caterpillars.
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Phasianus colchicus is the cells used when a bird reproduces with a caterpillar. Birds reproduce by internal fertilization, during which the egg is fertilized inside the female. Like reptiles, birds have a cloaca, or a single exit and entrance for sperm, eggs, and waste. The male brings his sperm to the female cloaca. The sperm fertilizes the egg.
Similar to mammals, birds begin reproducing when an egg, or ovum, in the oviduct comes into touch with a sperm cell. The fertilised ovum serves as the egg's nucleus and before it is laid, it is given a food supply (the yolk) and a protective shell.
Birds are vertebrate creatures that are members of the Class Aves and distinguished by having feathers, toothless beaks, and hard-shelled eggs. They are four-chambered, warm-blooded creatures with a fast metabolic rate. Each bird has wings and a flexible, light backbone.
Both birds and reptiles have internal fertilisation during sexual reproduction. They are both oviparous creatures. Oviparous animals lay their eggs outside of the female bodies, and the eggs are expelled, allowing the eggs to hatch. There is very little to no growth of the embryo inside the mother's body. In oviparous species, fertilisation can occur both inside and externally, but the young animal's growth is always external.
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What are plastids? Where are they found? Name their types.
Answer:
Plastids are present only in plant cells there are two type of plastids chromoplast and leucoplast chromoplast containing the green pigment are known as chloroplast chloroplastor important for photosynthesis chloroplast also contain various Yellow or Orange pigments in addition to chlorophyll lucoplast are the primary organel is in which the material such as starch oil and protein granules are stored the internal organisation of chloroplast consists of numerous membrane layers embedded in material called stroma these are similar to mitochondria in external structure plastic also have their own DNA and ribosomes.
5. An adaptation is an inherited characteristic that helps an organism
survive and reproduce in its environment. Over time, adaptations
become more and more common in the population. For example,
suppose that the water in a pond gets darker over a period of fou
years. The diagrams and table below show what might happen to a
frog population living in the pond.
Answer:
year light-colored frog dark-colored frog
1 6 2
2 4 4
3 2 6
6 0 8
question 1 - year 1
question 2 - dark-colored frogs increased while light-colored frogs decreased.
question 3 - dark-coloring is better suited for survival at year 3.
question 4 - dark color arose from mutation.
question 5 - yes, mutations arise randomly.
Edward jenner’s smallpox inoculation experiment was based on his observation that dairymaids who had had cowpox did not contract smallpox. How did jenner form his hypothesis from this observation?
Edward Jenner formed a hypothesis from his observation by formulating a tentative statement and checking for the hypothesis through experiments.
In the field of science, we can describe hypothesis as a tentative statement that is either true or false. To confirm a hypothesis, experiments are done and a result is deduced.
Edward Jenner used the same methodology. From his observation, Jenner was able to form a hypothesis that if a person is infected with cowpox, then he will not catch smallpox.
To test his hypothesis, he performed experiments that confirmed his results. Jenner formed his hypothesis by observing the cowpox and smallpox relation first and then making a tentative statement.
For the conduction of scientific experiments, the formation of a hypothesis is important.
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Answer:
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
Explanation:
Which choice is not an example of a molecule?
O Mn
O H₂S
О КОН
O 03
Accurate recording of observations should be based on:
O impressions
O honesty
O ideas
Ofeelings
Answer:
Honesty
Explanation:
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