Please answer the following questions based on the titration curve:
1. From the plot, determine the number and types of titratable groups for the unknown amino acid.
2. Determine best you can the experimental pKa values for each titratable group from the plot
3. Determine best you can the molecular weight of your unknown amino acid from data obtained from
your plot.
4. Calculate the isoelectric point of your sample. a) What is the definition of isoelectric point? b)
Where would you find the isoelectric point on a titration curve?
5. What is the identity of your unknown amino acid? Justify your conclusion by comparing the
observed molecular weight and pKa values to those for all of the amino acid
Answers
Titration is a useful tool in the determination of amino acid side chains and the ionizable groups. There are two titratable groups for the unknown amino acid. These are α-COOH and α-NH₃⁺. The experimental pKa values for the groups are- pK₁ = 2.35 for α-COOH and pK₂ = 9.78 for α-NH₃⁺.
What is Isoelectric point?Amino acids are the organic compounds that contain both amino and carboxylic acid functional groups. Isoelectric point (pI) is the pH at which the net charge on an amino acid is zero. The isoelectric point of the given amino acid can be calculated by the formula:
pI = (pK1+pK2)/2 = (2.35+9.78)/2 = 6.065
Isoelectric point will be in the middle part of the curve in the buffer region. Buffer region is the section of curve between the initial point and the equivalence point.
The unknown acid would be glycine. The curve gas two dissociation steps- loss of H⁺ from the carboxyl group at low pKa value and gain of H⁺ by the amino group at high pKa value.
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Related Questions
research
5. Evaluate the impact of pasteaur's on both
Scientific thought and society. What was the affect
Of Pasteurs investigation on scientist ideas and
people's lives?
Answers
Answer: Pasteur discovered Pasteurization, meaning without his discovery, today, we would not have easy access to long lasting milk. His discoveries also help scientists with vaccines.
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
For each of the following, state whether it is an organelle, a cell, a tissue, an organ, an organ system or an organism
A heart
B trachea
C onion epidermis
D onion bulb
E onion plant
F human being
G lungs
Answers
Answer:
all of the organs are needed for the human body
B) Trachea= Organ
C) onion epidermis= tissue
D) onion bulb= organ (for plant)
E) onion plant= organ (for plant)
F) Human being= single structure but it is made up of billion of smaller structures of four major kinds: Cells, Tissues, Organs and systems.
G) lungs= organ
Hope this help!!
Which cell structure would be found in a plant cell but not in an animal cell?
A. Permeable cell membrane
B. Large central vacuole
OC. Membrane-enclosed nucleus
OD. Endoplasmic reticulum
Answers
Answer:
B
Explanation:
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Which is an ion found in a glass of water?
OA. 0₂
OB. N
OC. 0
OD. Ht
SUBMIT
Answers
On Earth, how do objects fall? (1 point)
O toward the center of the Earth, as a result of gravity
O toward the surface of the Earth, as a result of a force other than gravity
O toward the center of the Earth, as a result of a force other than gravity
toward the sun, as a result of gravity
Answers
Answer:
bien y tu? que tal, yo bien gracias es lo bueno y tu que tal
Answer:
toward the center of earth as a result of gravity
20 POINTS!
Which statement best represents how structure relates to function?
Labrador retrievers can be black, yellow, or chocolate colored.
Tortoises in the wild can live for more than 150 years.
People can develop a tolerance for spicy food over time.
A deer's horizontal pupils help it scan the horizon for predators.
Answers
The statement that best represents how structure relates to function is as follows: a deer's horizontal pupils help it scan the horizon for predators (option D).
How does structure of an organism relate with function?A structure is an overall form or organization of organs, tissues, cells etc. in living organisms.
Living organisms are directly dependent on certain structures in their morphology to survive. This is because these structures perform specific functions that determine their survival.
Examples of structures found in living organisms and the function they perform are as follows:
Eyes - sightRadula - feeding in snailsCilia and flagella - for movement and locomotionRoot hairs - for absorptionTherefore, the statement that best represents how structure relates to function is as follows: a deer's horizontal pupils help it scan the horizon for predators.
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Water is the most abundant molecule in the body, but it is not a biomolecule. Neither are carbon dioxide,
ethanol, or methane. Review the definition of a biomolecule and the structure of these biomolecules
compared to glucose and alanine, and explain why glucose and alanine are important and common
molecules are not biomolecules.
Answers
A biomolecule is one that is created by a living thing by definition. Water is therefore the external supply of carbon dioxide that living things use to manufacture proteins to fulfill their energy needs.
Water molecules have a slightly positive and a slightly negative side as a result of the unequal sharing of electrons.
There is neither a positive nor a negative side to some molecules, as ethane.The unequal distribution of electrons within the polar molecule is what distinguishes polar (water) from non-polar (ethane) molecules. Covalent bonds in nonpolar molecules have an equal number of electrons.Within aqueous solutions, water is universalizing everything formed from atoms and molecules.Molecules of two or more substances are combined in a homogenous manner to form solutions. Typically, the chemical with the highest concentration is the solvent. Some chemicals are soluble in little doses.Learn more about biomolecules here:
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Which field of earth science would be involved in studying the surface features of Jupiter's moons?
Answers
The field of Earth science would be involved in studying the surface features of Jupiter's moons is Geomorphology.
What is Geomorphology?Geomorphology, which literally means the study of the shape or form of the Earth, focuses mostly on the topographical characteristics of the planet's surface. It is focused on how landforms are categorized, described, and how they came to be.
The study of landforms and their evolution is known as geomorphology. Both qualitative and quantitative research have traditionally been done on the subject, with the former focusing on the description of landforms and the latter on the forces acting on the Earth's surface to create and alter landforms.
In conclusion, the correct option is Geomorphology.
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What would be the benefits and drawbacks of having oil or alcohol as your main body fluid when it comes to cooling?
Answers
Answer:
Blowing on your wet hand helps the water and alcohol to evaporate. The airflow will also support the heat transfer away from your skin.
Explanation:
Which type of anthropologist would most likely study living savanna baboons
in their natural habitat?
O Primatologists
O Forensic anthropologists
O Archaeologists
O Cultural anthropologists
O None of the answers are correct
Answers
Answer:
Primatologists
Explanation:
Primatologists are scientists who study primates, such as gorillas, orangutans, chimpanzees, and lemurs. The other anthropologists: forensic anthropologists, archaeologists, and cultural anthropologists study mostly humans, not non-human primates.
What historical, political or geographical factors contribute to this difference in renewable energy consumption? List at least three different factors.
Answers
The historical, political or geographical factors that contribute to the difference in renewable energy consumption are energy generation, the dependence of natural resources that are uncontrollable by man, problems of energy quality and location of the resource.
What are the problems of renewable energy?One of the main challenges for generating energy from renewable sources is economic. Investing in energy matrices from renewable sources has a high cost, in addition to being considered a risky investment.
What are the problems of non-renewable energy?Non-renewable energy is also considered a type of dirty energy, as it causes damage to the environment and also to man, such as the destruction of ecosystems, global warming, acid rain, the greenhouse effect, among many other problems.
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Studying the folding patterns of protein molecules can help microbiologists better understand cellular processes as well
as some diseases, such as Alzheimer's, that are caused by proteins that have misfolded. The folding of these
complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even
expensive supercomputers to do this.
A group of researchers at Stanford University developed software that can be used to distribute the processing of data to
anyone who is willing to donate time on their idle personal computers. As a result, the researchers have been able to
achieve protein-folding simulations that are far better than those other computing methods have done. Which statement
best describes the work of these researchers?
Answers
Running an experiment required the researchers to use ingenuity to tackle an issue.
The correct answer is "Running an experiment required the researchers to use ingenuity to tackle an issue."
It is the best choice since researchers can process data on anyone's computer who wishes to lend it to them, thanks to software that scientists created. In other words, they came up with a clever solution to the time and financial constraints that the simulation of these proteins folding had.Since the data can be replicated using the program, the work qualifies as scientific, and the fact that the data were not processed in a single location does not change this.The researchers employed more than just tried-and-true scientific methods. It is not a proven scientific method for anyone to be able to contribute time from their computer using software.In conclusion, the answer given above is the best one. Scientists employed ingenuity to find a solution; otherwise, it would have cost time and money to slow down or cease the research.To learn more about protein molecules visit:
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One of the main reasons that the American diet is unbalanced
Answers
One of the main reasons that the American diet is unbalanced is because of their high consumption of preserved or canned food and a diet that is rich in fats and calories.
A balanced diet must contain the following seven components: carbohydrates, protein, fat, fiber, vitamins, minerals, and water.Maintaining good health and feeling your best can both be facilitated by eating a healthy, balanced diet. To acquire and maintain a healthy body weight, this entails consuming the appropriate amounts of food and drink, as well as a wide variety of meals in the appropriate quantities.Foods that have been preserved and are not truly fresh are referred to as processed foods. Processes that involve the addition of preservatives include canning, smoking, salting, and curing.Because processed meals are frequently easier to find than fresh foods, many consumers choose them over fresh produce. Fresh goods might occasionally be more expensive than their processed equivalents.Hence, the American diet is unbalanced because of their consumption of processed food.
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The stomach secretes _______________________, __________________ and
_________________ which act on food
Answers
The stomach secretes hydrochloric acid, digestive juices and
enzymes which act on food.
Explanation:The stomach secretes water, electrolytes, hydrochloric acid, and glycoproteins, including mucin, intrinsic factor, and enzymes. Gastric motility and secretion are regulated by neural and humoral mechanisms.
11 Answer:
Some bacteria use air movements to carry them from one place to
another, while others are _____, moving through the use of attached
filaments.
12 Answer:
Too small even to be considered a microorganism, _____ are among
the simplest forms of life on Earth, consisting only of genetic
material (DNA or RNA) surrounded by a protein coat.
13 Answer:
Preventing microbial contamination of a food involves controlling
_____, contamination, temperature� and moisture levels during processing.
Answers
Answer:
11: Non-Mobile (unable to move on their own or in the air).
12: Cells (?).
13: Sanitization (?).
Hope this helps <33 (sorry if any of this is wrong).
In a lab experiments where researchers are collecting data on hallucinations drugs they are most likely are stimulating overactivation of : 1. Serotonin 2. melatonin 3. dopamine or 4. epinephrine
Answers
In lab experiments where researchers are collecting data on hallucinations drugs, they are most likely stimulating the overactivation of melatonin.
What is melatonin?
Your body produces melatonin, a hormone that affects sleep. Melatonin is produced and released by the brain according to the time of day, rising in the dark and falling in the light. With age, melatonin production decreases.
In the form of an oral tablet or capsule, melatonin is also offered as a dietary supplement. The majority of melatonin supplements are created in a lab. Melatonin is frequently used by people to treat sleep disorders like jet lag and insomnia.
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What is protected within the nucleus?
A. Polysaccharides
B. DNA
C. Prokaryotic cells
Answers
Answer:
I want to say C. Prokaryotic cells
Explanation:
I could be wrong
Giving brainiest to whoever helps me with this question. (Very Hard)
Answers
Answer:
Basically you need to get several goldfish and different containers that are a different water temperature.
Explanation:
Get your goldfish. About 3-4 because the water should affect each of them about the same, so you want to make sure that it is the same outcome each time and not just a fluke.Get your water containers. Ideal water for goldfish is about 68-74 degrees. Anything below 68 is considered to cold, and anything about 74 degrees would be considered to hot. However, with this experiment, you will need "cold" water (anything under 67 degrees ideally anything under 55 degrees would be nice and "cold" for the fish), ideal water (68-74 degrees), and then "hot" water (anything above 75 degrees. Ideally about 77 - 85 degrees would be hot enough for them)Next I'd say form your hypothesis. When water is too cold, goldfish may stop eating, begin hibernating or die. When the water is to hot goldfish will become very stressed, and can overheat and die. So, choose a hypothesis from that.Your independent variable would be the water temperature, because it doesn't depend on anything. While how your goldfish act would be the dependent variable because they act according to the water temperature.Good luck with your experiment, and this is all I got for ya! Good luck!
What’s the answer???
Answers
Answer:
ObservationProblem questionExplanation:
This is an observation because the person noticed the lake was brown. They then wondered why the lake was brown, so that becomes a problem question.
Hope this helps.
How much colder was Tuesday then Saturday? if Tuesday is 55 degrees and Saturday is 60 degree
Answers
627272728828281910919192992
Answers
Answer:
These are numbers.
Explanation:
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Identify three (3) social and cultural
perspectives
an individual may possess.
1:3
Answers
Cultural Perspectives: nationality, race, gender
Social Perspective: Symbolic Interactionist Perspective, Structural Functionalist Perspective
A cultural perspective can be defined as:
“Cultural perspective refers to the way individuals are shaped by their environment and by social and cultural factors.These factors include a person’s nationality, race and gender.”
What is a sociological perspective?
"The sociological perspective is to see through the behavior of people and the appearance of organizations" (Berger, 1963). A sociological perspective looks at society through a lens that excludes personal opinions. Generalize individual causes and behaviors into patterns and categories.The Symbolic Interactionist Perspective:
The Symbolic Interactionism perspective, also known as Symbolic Interactionism, encourages researchers to explore symbols and nuances, their meaning and their impact on the interactive relationships of everyday life.
A Structural-Functionalist Perspective:
In sociology and other social sciences, structural-functionalism is the view that all the institutions, relationships, statuses, and practices that make up society have a purpose and are essential to the sustained functioning of other members and of society as a whole. function as a school. .
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Researchers collected data about the heart rates of
humans aged 5 to 90 years. They represented the data in a
graph.
Which statement is the best explanation of the pattern in the data?
A. The data show that increasing age causes an increase in heart
rate
8. The data show neither correlation nor cause between age and heart rate
C. The data show a correlation between age and l
D. The data show cause but not correlation between age and heart
rate
Answers
Answerحبيبي والله انا نخبة معرفش يعني بس لو تبا الحل اسأل مس سيمة
جاوب السوال واضح
What are estuaries what feature allows them to be great spawning grounds for a wide variety of fish and shellfish
Answers
MAIN ANS
EXPLANATION
LINK
HASHTAG
Estuaries are partially enclosed water bodies.
Water bodies called estuaries and the marshes that surround them are typically found where rivers and the sea converge.
Unique plant and animal communities that have adapted to brackish water, which is a mixture of fresh water that drains from the land and salty ocean, can be found in estuaries.
Many of the environmental services and features that brackish estuaries provide, such as acting as natural runoff filters and functioning as nursery grounds, are also provided by these freshwater estuaries.
They have clean water and provide a safe growing and protected environment and hence are great spawning grounds for a wide variety of fish and shellfish.
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Water you drink is absorbed into the blood from the digestive tract. An increase in water intake caused an ___in the plasma osmolarity.
Answers
Answer:
an Decrease.
Explanation:
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How did the scientific research that started the Green Revolution affect society?
Answers
There were many impacts of green revolution which was affected our society and these were there was increase in area of farming because the main aim of green revolution was to increase the productivity of the crop.
What is green revolution?A revolution was started worldwide and the main objective of the revolution was to grow crops as much as possible and this revolution was for large production of crop than on this basis its name was decided and the name of the revolution was green revolution.
In India a great geneticist M.S. Swaminathan has started green revolution and it was started near about 1960 and this has changed the scenario and due to this revolution production of crops increased.
Therefore, There were many impacts of green revolution which was affected our society and these were there was increase in area of farming because the main aim of green revolution was to increase the productivity of the crop.
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To result in an action potential in the central nervous system, EPSP's must ____ through temporal and spatial summation to ____ threshold voltage.
O add up; exceed
O accelerate; reach
O flow; polarize
O sum; activate
Answers
Answer:
accelerate; reach
Explanation:
EPSPs fire to trigger action potentials in the postsynaptic cell, by getting the membrane potential to threshold at the axon hillock true, or initial segment of the axon
synaptic knob can fire several times, as others fire as well, so EPSPs can be summed or added; the whole cell body depolarizes, causing current flow, eventually causing an AP to propagate down the axon if brought to threshold at the axon hillock/initial segment.
-remember, as one synaptic knob firing causes 0.5mV charge, you need much more than one to get to threshold.
T/F: if a knob is closer to the axon hillock, more charge will get to it
EPSPs, as described above, are what happens in efferent neurons, which go to effectors, and in interneurons, which are found in the CNS between afferent and efferent neurons
-we already covered afferent neurons, which cause APs to fire in the membrane next to the receptor (toward the CNS)
hi can you help me with question
Answers
Answer:
Look at this....................It should help you
The structure labeled as x is the___, so the cell in the image is a ____. The structure labeled as w is the ___, so the cell in the image is a ___
Answers
The cell in the photograph is a Eukayotic cell since the structure with the label "x" is the nucleus. The cell in the image is a plant cell since the component marked with the letter "w" is the chloroplast.
What is plant cell?
Plant cells are the essential building element of life in species of the order Plantae. These cells, which are referred to as eukaryotic cells, contain a true nucleus as well as specialized parts called organelles that have various functions. Only in plants are chloroplasts, specialized organelles that utilise photosynthesis to make sugars in their cells.
Eukaryotic cells found in plants differ significantly from those seen in other eukaryotic organisms in a number of significant ways. One of the traits that sets a plant cell apart from other cells is the presence of a cell wall outside of the cell membrane.
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Why is it important that some substances won’t be solubilized in water?
Answers
Answer:
They are not polar
Explanation:
For a substance to be soluble in water, the substance should have H+ and OH- ions and hydrogen bonds. for example ethanol (C²H⁵OH)