i) Is True that all the cells in any given colony on your plate are genetically
ii) It is False that The cells in one colony are genetically identical to the cells in each of the other colonies
i) All the cells in any given colony on your plate are genetically identical. This is because each colony originates from a single cell that has undergone replication and division. As the cells divide, they pass on the same genetic information to their progeny, resulting in a clonal population of genetically identical cells.
ii) The cells in one colony are not necessarily genetically identical to the cells in each of the other colonies. This is because the mutagenesis process has likely resulted in genetic variations among the original yeast cells. When these cells undergo replication and division, the genetic variations are passed on to the progeny, leading to the formation of genetically distinct colonies. Therefore, it is possible for different colonies to have different genetic profiles, even though they are all derived from the same original culture of yeast cells.
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Do you believe that Watson and creek went about their research in an ethical way? Why or why not?
Yes, I believe that Watson and creek went about their research in an ethical way because they used X-ray crystallography to identify DNA properties and there was no risk of death or disabling injury occurring.
What is DNA?This is known as deoxyribonucleic acid and it is the genetic material of almost all living organisms.
Watson and Crick are scientists who worked on different findings by others and were able to obtain a X-ray crystallography which showed DNA is made up of two strands wrapped around each other to produce a double-helical structure thereby making it ethical as there was no risk of death or disabling injury occurring.
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The image below shows a common blood pressure gauge.
A doctor examines a person's blood pressure by holding the stethoscope chest piece on his arm and reads the sphygmomanometer.
What does this device do?
A.
measures the electrical activity of the heart
B.
measures the pressure of blood when the lungs expand and compress
C.
measures the pressure of blood when the heart contracts and relaxes
D.
measures the level of oxygen present in the blood
Answer:
measures the pressure of blood when the heart contracts and relaxes
Biological diversity on Earth today is directly related to
A.
steady climate over millions of years
B.
extinction
C.
speciation that occurs when empty niches are filled
D.
Both A and B
The height of spike weed is a result of polygenic inheritance involving three genes, for which "dominant" alleles can each contribute an additional 5cm to the base height (10cm) of the plant. The tallest plant (AABBCC) can reach a height of 40cm. If a tall plant (AABBCC) is crossed with a base-height plant (aabbcc), what is the expected height of the F1 plants?(A) 5cm(B) 15cm(C) 25cm(D) 30cm
If a tall plant (AABBCC) is crossed with a base-height plant (aabbcc), the expected height of the F1 plants is 25 cm.
Thus, the correct option is C.
Polygenic inheritаnce is where one trаit (for exаmple, eye color) is determined by multiple genes (two or more). This typicаlly hаppens when there is а wide vаriety of this trаit (e.g. height, eye color, hаir color, skin color, etc.).
From the information above, we know:
dominant alleles can each contribute an additional 5cm to the base height (10cm) of the plantParental cross → AABBCC x aabbcc
AA x aa BB x bb CC x cc
A A B B C C
a Aa Aa b Bb Bb c Cc Cc
a Aa Aa b Bb Bb c Cc Cc
F1 → AaBbCC
= 5 + 5 + 5 + 10
= 25 cm
Thus, the expected height of the F1 plants if a tall plant (AABBCC) is crossed with a base-height plant (aabbcc) is 25 cm.
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The image below illustrates a specific organ in a plant found below ground:
This organ provides more than one function to the plant. Which of the following is a function of this organ illustrated in the picture?
Question options:
O Releases water into the soil
O Transports carbon dioxide to the soil
O Anchors the plant in the soil
O Absorbs oxygen from the soil
Answer:
Anchors the plant to the soil
Which statement is true about a population of bats that experience stabilizing selection in terms of the wing length.
Question 9 options:
two different wing lengths are increasing, while the most common length is decreasing.
the frequency of the most common wing length is increasing over all other lengths
the population of bats is shifting to only have the longest of wing lengths
the frequency of the shortest wing length is increasing over all other lengths
Stabilizing selection occurs when the population stabilizes on a particular trait value and genetic diversity decreases.
What genetics means?Genetics is the scientific study of genes and heredity—of how certain qualities or traits are passed from parents to offspring as a result of changes in DNA sequence. A gene is a segment of DNA that contains instructions for building one or more molecules that help the body work.
Why genetic is important?Understanding genetic factors and genetic disorders is important in learning more about promoting health and preventing disease. Some genetic changes have been associated with an increased risk of having a child with a birth defect or developmental disability or developing diseases such as cancer or heart disease.
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Scientific research titled "Complementary System"
Answer:The term complement was coined by Paul Ehrlich in 1899
Explanation:
The risk for which of the following is NOT reduced with an increased intake of insoluble fiber?type 2 diabetes heart disease constipation diverticular disease
The risk of the following is NOT reduced with an increased intake of insoluble fiber is B. heart disease
Insoluble fiber is a type of fiber that cannot dissolve in water, for example plant cellulose and hemicellulose. Examples of water-insoluble fiber are found in wheat, corn, whole grains, avocados, carrots and cauliflower. Consumption of insoluble fiber can reduce the risk of blood sugar, diverticular disease, healthy digestion, weight control and the risk of diabetes.
Heart disease can be caused by cholesterol that accumulates in the walls of blood vessels and causes blood vessels. This can be a cause of coronary heart disease. Consumption of soluble fiber can reduce the risk of heart disease. This fiber can attach to cholesterol particles in digestion and remove them from the body. So that cholesterol in the blood can be reduced and avoided one of the causes of heart disease.
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In the following example, what is the DEPENDENT variable?
Hypothesis: Mice on a restricted low-caloric diet will live longer than mice that can eat as much as they want.
Experiment: A large population of genetically identical mice is divided into two groups. Half receive as much food as they care to eat each day. The other half receive 20% less food than a typical mouse eats each day. The lifespan is recorded for all mice. All mice live in the same room, in the same type of cage, with access to water.
Question 1 options:
genetic background of the mice
volume of water available
amount of food available
lifespan of each mouse
Answer:
low caloric diet
Explanation:
because I learned this
Compared to fish found in lower temperature habitats, fish that inhabit higher temperatures tend to have more ____
Compared to fish found in lower-temperature habitats, fish that inhabit higher temperatures tend to have more saturated fatty acids (phospholipids) to maintain synaptic membrane fluidity.
Their metabolic rate, and consequently their energy balance and activity, such as their locomotor and eating habits, are impacted by the temperature.
The ability and desire of fish to obtain food, as well as the manner in which they digest food, absorb nutrients through their gastrointestinal system, and store surplus energy, are all affected by temperature. Temperature also plays a role in how to fish process food through digestion.
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Which of the multi-subunit protein structures described below consists of individual protein subunits that are fibrous rather than globular in structure?
a. actin filaments
b. microtubules
c. collagen
d. collagen and actin filaments
e. actin filaments and microtubules
Among the multi-subunit protein structures described below consist of individual protein subunits that are fibrous rather than globular in the structure are (d) collagen and actin filaments
Proteins that are globular are typically round or oval in form, and they are very soluble. Albumin, globulin, protamines, g actin, and other similar proteins are all examples of this type. Proteins that are classified as fibrous tend to have an elongated or needlelike structure.
Collagen, elastin, and keratin are some examples of these types of proteins. Tubulin, which is globular in shape, is the building block of microtubules, while actin is made up of globular and fibrous actin (mostly).
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What are the symptoms of this disorder?
If each person inherits two copies of any given gene from their parents, those who inherit two copies of the same gene variants are known as homozygous individuals. Those who inherit two different variants of the gene are known as heterozygous individuals. Determine the zygosity of samples 1, 2, and 3. DNA sample 1 DNA sample 2 DNA sample 3 Zygosity (homo/hetero) Allele contained (TNF1 and TNF 2)
Zygosity refers to the genetic composition of an individual with regards to a specific gene, indicating whether the individual is homozygous (inherits two identical copies of a gene) or heterozygous (inherits two different copies of a gene).
For the samples 1, 2, and 3, the zygosity can be determined based on the alleles contained in each sample. The alleles are variations of a gene and are indicated as TNF1 and TNF2.
If sample 1 contains two copies of TNF1, the individual is homozygous for TNF1. If sample 2 contains one copy each of TNF1 and TNF2, the individual is heterozygous for TNF. If sample 3 contains two copies of TNF2, the individual is homozygous for TNF2.
In summary, the zygosity of a sample is determined by the presence of different or identical copies of a gene. Homozygous individuals have two copies of the same gene variant, while heterozygous individuals have two different gene variants.
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FILL IN THE BLANK. Two strands of DNA are bound together by ____ bonds and then wrapped around a common axis to form a double helix.
A double helix is created when two strands of DNA are joined by hydrogen bonds and coiled around a central axis.
The double helix is what?In the field of genomics, the structure of DNA is referred to as a "double helix." A DNA molecule is made up of two interconnected strands that spiral around one another to produce a twisted ladder-like structure called a DNA helix. Each strand's backbone is made up of alternating deoxyribose and phosphate groups.
Each sugar is linked to one of the four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). Adenine and thymine establish chemical bonds with one another, and cytosine and guanine form chemical bonds with one another, joining the two strands of DNA.
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In humans, both cystic fibrosis and the inability to taste phenylthiourea are inherited as autosomal recessive traits. Two parents without cystic fibrosis and without the ability to taste phenylthiourea have a daughter who can taste phenylthiourea and has the cystic fibrosis condition. What is the probability that their next two children will both be born without cystic fibrosis and both have the ability to taste phenylthiourea?
The likelihood of producing two kids that can taste phenylthiourea and don't have cystic fibrosis is (1/16) * (1/16) = 1/256.
What is cystic fibrosis?The lungs, digestive system, and other body organs are severely harmed by cystic fibrosis (CF), a genetic condition.
The cells that make mucus, perspiration, and digestive fluids are impacted by cystic fibrosis. Normally, these produced fluids are slick and thin.
We need to take into account the likelihood of getting the AA combination in both genes in order to determine the likelihood of having a child without cystic fibrosis and with the capacity to taste phenylthiourea.
For each gene, the likelihood of this occuring is (1/2) * (1/2), which results in a probability for both genes of (1/4) * (1/4) = 1/16.
Therefore, the likelihood of producing two kids that can taste phenylthiourea and don't have cystic fibrosis is (1/16) * (1/16) = 1/256.
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the expected number of each phenotype out of the 900 total offspring, and enter the values in the data table.
Assuming that the offspring are produced through Mendelian genetics, the expected number of each phenotype can be determined using the Punnett Square.
What is genetics?Genetics is the scientific study of heredity and variation. It involves the study of genes, and how they are passed from parents to their offspring. Through genetic analysis, scientists can identify and study specific traits and understand how they are expressed in organisms.
For the dominant phenotype (Purple Flowers), the expected number of offspring would be 900 x (3/4) = 675.
For the recessive phenotype (White Flowers), the expected number of offspring would be 900 x (1/4) = 225.
Therefore, the expected number of Purple Flowers would be 675 and the expected number of White Flowers would be 225.
Data Table
Phenotype | Expected Number
Purple Flowers | 675
White Flowers | 225
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Paleontologists have discovered mammal fossil specimens in both
Australia and India. They hypothesize that the animal lived during a time
when the two continents were connected by land. What aspect of
evolution are they studying?
Answer:
Paleontologists who study mammal fossils from Australia and India and hypothesize about their existence during a time when the two continents were connected are studying biogeography, which is the study of the geographic distribution of species and their evolutionary history. This field focuses on understanding the patterns of species' origins, dispersal, migration, and extinction through time and space, and how these patterns have influenced the current distribution of life on Earth. By studying the fossil records from these two continents, they are trying to understand the evolutionary history and the past distribution of these species, which can help shed light on the historical connections between the continents and the processes that have shaped the current distribution of species on Earth.
Example:
An example of a study in biogeography could be examining the fossil records of dinosaurs found in North America and Asia to determine if the two landmasses were once connected. By analyzing the similarities and differences in dinosaur species found in each location, scientists could deduce the patterns of migration, dispersal, and evolutionary history of these animals. This could help to shed light on the past connections between North America and Asia, and how these connections may have influenced the evolution of life on these landmasses. The study of biogeography is interdisciplinary and draws on fields such as geology, ecology, and evolution to provide a comprehensive understanding of the distribution of species and their evolutionary history.
Which of the following statements about pattern formation are true? Select the four statements that are true.1) Homeotic genes code for transcription factors that control the development of segment-specific body parts.2) Homeotic genes establish major body axes.3) Cells receive molecular signals that communicate their position in relation to other cells.4)Differential gene expression affects the developmental process in animals.5)Pattern formation begins in adult animals.6)The process of pattern formation involves segmentation of the body but does not involve the development of segment-specific body parts.7)Positional information controls pattern formation.
Positional knowledge influences pattern creation, homeotic genes encode transcription factors that control the development of segment-specific body parts, and cells receive molecular signals that transmit their position in reference to other cells.
What exactly is pattern formation?Pattern formation science is concerned with the observable, (statistically) orderly outputs of self-organization as well as the shared principles behind similar patterns in nature. Pattern formation in developmental biology refers to the formation of complex organizations of cell fates in space and time.
The involvement of genes in pattern formation is a component of morphogenesis, the generation of various anatomies from similar genes, which is now being investigated in the field of evolutionary developmental biology, or evo-devo.
The mechanisms involved are clearly visible in the anterior-posterior patterning of embryos from the model organism Drosophila melanogaster (a fruit fly), which was one of the first organisms whose morphogenesis was studied, as well as in the eyespots of butterflies, which develop in a variant of the standard mechanism.
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How does natural selection impact genetic variation?
Natural selection is the process by which species change over time as individuals with advantageous features survive and reproduce. Genetic differences frequently produce these advantageous characteristics
As some mutations grow more common, this might result in a decrease in genetic variation within a population. On the other hand, populations that are subjected to various selective pressures will evolve in diverse ways and can create distinctive genetic variants that are particular to that population. Natural selection can affect genetic variation in this way by influencing the frequency of various variations within populations.
. An individual will be more likely to pass on a genetic variant to their kids if it gives a survival or reproductive advantage. That variant will become more prevalent in the population over time.
What is genetic variation?
The difference in DNA between individuals or communities is known as genetic variation. Mutation and genetic recombination are two of the many processes that cause genetic variation. Genetic variety is primarily caused by mutations, although it is also influenced by other processes including genetic drift.
Genetic variation is the existence of distinct gene sequences among various members of a species.
Genetic diversity describes variations in an individual's genetic makeup, or DNA, within a species. Different gene combinations, mutations, or alterations to the structure or functionality of DNA can all contribute to this variety. The diversity of traits, behaviors, and physical qualities that make up a species is influenced by genetic variation, which also serves as the basis for evolution and adaptation.
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identify and describe similarities and differences between this group of medium ground finches on the following groups: the sample of 200 medium ground finches measured in 1976
The range of beak sizes increased between the 1976 population and the 1978 offspring of the 1977 survivors. The most common beak depth decreased between the 1976 population and the 1978 offspring of the 1977 survivors. The population size of the 1978 offspring is much lower than the original 1976 population. Here option A, C, and G are the correct answer.
These statements suggest that there have been some changes in the medium ground finch population between 1976 and 1978. The increased range of beak sizes suggests that there may have been greater variability in beak size in the 1978 offspring compared to the 1976 population.
The decreased most common beak depth may indicate that the 1978 offspring had a different average beak size than the 1976 population. The decrease in population size may be due to environmental changes or a shift in the availability of resources. However, without further data and analysis, it is not possible to definitively determine the causes of these changes.
Complete question:
Identify similarities and differences between this group of medium ground finches and the sample of 200 medium ground finches measured in 1976 (Figure 1). Check all that are correct.
a. The range of beak sizes increased between the 1976 population and the 1978 offspring of the 1977 survivors.
b. The range of beak sizes decreased between the 1976 population and the 1978 offspring of the 1977 survivors.
c. The most common beak depth decreased between the 1976 population and the 1978 offspring of the 1977 survivors.
d. The most common beak depth increased between the 1976 population and the 1978 offspring of the 1977 survivors.
e. The population size of the 1978 offspring is nearly the same as the original 1976 population.
f. The population size of the 1978 offspring is much higher than the original 1976 population.
g. The population size of the 1978 offspring is much lower than the original 1976 population.
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Current intake recommendations for fat intake come from both the Dietary Guidelines for Americans, 2010 and the American Heart Association. From the list below, select all current fat intake recommendations.1. The Acceptable Macronutrient Distribution Range for total fat intake for adults is 20-35 percent of overall calories2. Saturated fat should be limited to less than 300 milligrams per day3. Keep trans fat intake as low as possible
The Acceptable Macronutrient Distribution Range for the total fat intake for adults is 20-35% of overall calories
Saturated fat should be limited to less than 7 percent of daily caloric intake.
Keep the trans-fat intake as low as possible.
What are Macronutrients?Macronutrients are the three primary components of the human diet that provide us with energy and are required in large amounts. They include carbohydrates, proteins, and fats. Each macronutrient has a different role in the body and contributes a different number of calories per gram:
Carbohydrates: 4 calories per gram, the primary source of energy for the body.
Proteins: 4 calories per gram, used for building and repairing tissues, enzymes, and hormones.
Fats: 9 calories per gram, a concentrated source of energy, essential for brain function, hormone production, and nutrient absorption.
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Why was the discovery of genes powerful support for Darwin's theory of natural selection
Edit- 7th grade biology not college
The discovery of genes is powerful to support Darwin's theory of natural selection because we can test how inherited features are transmitted across generations during natural selection processes.
What is the relationship between genes and natural selection?The relationship between genes and natural selection is based on the fact that genes are units of inheritance transmitted according to selective pressures of the environment and thereby increasing their frequencies in beneficial conditions.
Therefore, with this data, we can see that the relationship between genes and natural selection is based on inheritance patterns.
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Solar cells would be more practical to use if they were....
larger.
pollution free.
nonrenewable.
less expensive.
Answer: Which of the following is a way the atmosphere helps maintain life on Earth?
OPTIONS
The atmosphere helps maintain a moderate temperature.
The atmosphere draws water vapor from outer space.
The atmosphere has air currents that rotate the planet.
The atmosphere contains some gases that are toxic.
Explanation:
Answer:
less expensive
Explanation:
which of the following test is the most useful in differentiating listeria monocytogenes from erysipelothrix rhusiopathiae?
The test is the most useful in differentiating Listeria monocytogenes from Erysipelothrix rhusiopathiae in the fermentation of glucose.
Listeriа monocytogenes аnd Erysipelothrix rhusiopаthiаe аre the importаnt pаthogenic species. Listeriа ivаnovii is the only species other thаn Listeriа monocytogenes thаt is frаnkly pаthogenic for аnimаls, including humаns. Both Erysipelothrix rhusiopаthiаe аnd Listeriа monocytogenes аre cаpаble of survivаl in the soil аnd existing in the аnimаl in commensаl аnd cаrrier stаtes.
Fermentаtion of glucose is the fermentаtion process thаt cаrried out by enzymes in yeаst which converts glucose into ethаnol. Listeriа monocytogenes is motile аt room temperаture incubаtion, hydrolyzes esculin аnd is cаtаlаse positive, reаctions of which аre аll negаtive for Erysipelothrix rhusiopаthiаe. Both species ferment glucose.
Your question is incomplete, but most probably your options were
A. Hydrolysis of esculin
B. Motility
C. Catalase
D. Fermentation of glucose
Thus, the correct option is D.
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An experimental study provides stronger support than an observational study for a cause-and-effect relationship between variables.
Question 9 options:
True
False
Answer:
Correct option is
Explanation:
The genetic code essentially the same for all organisms. From this one can ogically assume which of the following statements to be true? Proteins were the first genetic material (before DNA) There is only one possible code that could work tor translation A gene from an organism could be expressed by any other organism The same codons in ditferent organisms translate into aitterent amino acids All of the above are true
The genetic code is essentially the same for all organisms, thus the correct statement is that a gene from an organism can theoretically be expressed by any other organism.
Between species, genes can be transferred. The genetic code is universal, therefore the polymerases enzyme can precisely transcribe a gene from a different creature. For instance, some bacterial species can trade their plasmids, which are little chromosomes, to acquire genes for antibiotic resistance.
Recombinant DNA technology was created using this gene transfer method. It is possible to express the feature that is represented by a gene by physically taking it from one creature and putting it into another through genetic engineering, commonly known as transformation.
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PLEASE HELP I REALLY NEED TO FINISH THIS IN TIME!
Does the cell shown have a cell wall, a cell membrane, or both? Explain your reasoning.
Answer:Both
Explanation:
That is a plant cell. Plant cells have both cell membranes and cell walls. The cell wall is the dark green outer layer and the membrane is the white inner layer.
Someone you know has vomited while in an alcohol induced sleep and now seems to be having great difficulty breathing. What do you suppose has caused this?
According to Dr. Lee, the liver converts alcohol into acetaldehyde. Acetaldehyde levels that are too high cause your liver to react by making you vomit in order to get rid of the extra alcohol.
What does breathing trouble mean?You may experience breathlessness due to a variety of factors: lung ailments as pneumonia, emphysema, or asthma. issues with your airway system, specifically your trachea or bronchi. If your heart cannot pump enough blood to provide your body enough oxygen, heart disease may cause you to feel out of breath.
Is having trouble breathing normal?Mild breathing problems can occasionally be expected and are of no consequence. One illustration is an extremely congested nose. Another example is hard exercise, particularly if you don't exercise frequently.
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Importance of blowholes
A blowhole is a hole (or spiracle) at the top of the animal's head through which it breathes air. These are found in pairs in baleen whales.
It is homologous to other mammals' nostrils and evolved through gradual movement of the nostrils to the top of the head. The posterior placement of blowholes on cetacean heads is thought to reduce the amount of energy expended when breathing at the water's surface.
Whales forcefully expel air through the blowhole as they approach the water's surface to breathe. Exhalation is expelled into the lower-pressure, colder atmosphere, where any water vapor condenses.
This spray, known as the blow, can be seen from a long distance as a white splash, which can also be caused by water resting on top of the blowhole.
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A buffer typically consists of a ______ The buffer system keeps pH constant because if the pH begins to drop to a lower value, the ______ acts to ______. Conversely, if the pH begins to rise to a higher value, the ______ acts to ______
A buffer typically consists of a weak acid plus conjugate base. The buffer system keeps pH constant because if the pH begins to drop to a lower value, the conjugate base acts to absorb [tex]H^{+}[/tex]ions. Conversely, if the pH begins to rise to a higher value, the weak acid acts to release [tex]H^{+}[/tex]ions.
A buffer is something like bicarbonate. Bicarbonate can provide a proton when the pH rises too high, turning it into carbonate. The conjugate base, carbonate, can take in a proton and change back into bicarbonate when the pH falls too low.
A buffer is a unique liquid that prevents significant pH level changes. Each buffer that is created has a certain buffer range and buffer capacity. The amount of acid or base that may be added to a buffer before the pH starts to noticeably shift is known as the buffer capacity. It is also possible to define it as the amount of powerful acid or base required to raise the pH of one liter of solution by one pH unit. The buffer range is the pH range where an additional acid or base can be successfully neutralized while a buffer maintains a reasonably constant pH.
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