The pka's of arginine's a-carboxyl group, a-amino group, and side chain are 1.8, 9.0, and 12.5, respectively. what is arginine's pi?
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To calculate the pI (isoelectric point) of arginine, we need to find the pH at which the net charge of the molecule is zero.
The pI can be calculated as the average of the pKa values of the two ionizable groups closest to neutrality.
In the case of arginine, these are the α-carboxyl group (pKa 1.8) and the α-amino group (pKa 9.0).
Therefore, the pI of arginine can be estimated as (1.8 + 9.0) / 2 = 5.4.
In chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines). Important amines include amino acids, biogenic amines, trimethylamine, and aniline.
Inorganic derivatives of ammonia are also called amines, such as monochloramine (NClH2).
The substituent −NH2 is called an amino group.[6]
Compounds with a nitrogen atom attached to a carbonyl group, thus having the structure R−CO−NR′R″, are called amides and have different chemical properties from amines.
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Related Questions
The self-awareness of being romantically or sexually attracted to a defined group of people is referred to as:_________
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The self-awareness of being romantically or sexually attracted to a defined group of people is referred to as sexual orientation
What is self management?
Self management is a personal skill that allows a person to control and regulate their emotions, thinking and behaviour very effectively in every situation.
The main factor of self management is positivity it means when you feel positive and motivated you can control yourself better and by creating short- term as well as long- term goals for achieving first of all develop positive outlook.
There are several self management skill that helps us to maintain the goal of self management and they are time management, problem solving, decision making skill, including confidence as well as self protection.
Therefore, self-awareness of being romantically or sexually attracted to a defined group of people is referred to as sexual orientation
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Alaine looks outside her window and observes that it is hailing outside. Which part of the water cycle is she watching?.
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Answer: Precipitation
10 points to whoever can answer the question in the following attachment
Answers
Answer:
a,1 b,2 c,3 d,4
Explanation:
Identical twins have ____________ but ______________.
A. Identical DNA, different environmental variation
B. Identical DNA, come from different sperm and eggs
C. Identical environmental variation, different DNA
D. Different DNA, come from the same sperm and egg
Answers
Answer:
D
Explanation:
Different DNA, come from the same sperm and egg
which of the columns represents the growth stages of a lemur?
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The "Age" or "Developmental Stage" column in a dataset or table is probably the one that depicts the lemur's growth stages.
The age or developmental stage of individual lemur is generally recorded and examined by experts when researching the lemurs' growth stages. This knowledge contributes to our understanding of the growth and development of lemurs over their lifetime. There is typically a specified column in a dataset or table that records this data. Age or developmental stage could be listed in this column's labels.
Lemurs go through several growth stages according on the species, although they often go through stages like newborn, juvenile, subadult, and adult. Lemur infants normally rely on their mothers for care, but as they become older, they start to become more independent.
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Please help im desperate i got sick and missed a week of class
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Explanation:
discuss five pest, crops attacked mode of transmission effect and control
El Niño is an event where the normally strong winds along the equator are much weaker than usual, causing warm surface water along the equator to pile up. Do these images represent a normal circulation pattern or an El Niño pattern? Explain your response.
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Yes, because In 1997, El Niño had not spread as far across the equator in comparison to 2015. During an El Niño event, warm ocean waters accumulate in the central and eastern tropical Pacific, disrupting the normal atmospheric circulation patterns.
What is the El NiñoEl Niño refers to a climatic occurrence marked by the increase in temperatures of the ocean's surface in the central and east areas of the tropical Pacific Ocean. It has the potential to cause considerable changes in global weather phenomena.
The intensity and scope of El Niño occurrences differ annually. The year 2015 experienced a robust El Niño, which had significant and far-reaching impacts on weather systems around the world.
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one of the methods used to identify s. enterica in the lab is growth in tetrathionate broth, a selective enrichment medium for this organism. what does this mean?
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The growth in tetrathionate broth is a selective enrichment medium used for the identification of S. enterica. It suppresses the growth of other microorganisms in the sample, allowing for the isolation of S. enterica, which can then be confirmed by other diagnostic methods.
Salmonella enterica is a group of Gram-negative bacteria responsible for human and animal salmonellosis. The detection and isolation of S. enterica in the laboratory is essential to identify food-borne illness outbreaks. Several methods have been developed for this purpose, such as culture-based methods, serological tests, and nucleic acid-based techniques. One of the methods used to identify S. enterica in the laboratory is growth in tetrathionate broth, a selective enrichment medium for this organism. This method exploits the fact that S. enterica can survive in tetrathionate broth, which contains a high concentration of potassium tellurite. The medium is designed to suppress the growth of other microorganisms that may be present in the sample.
The selective enrichment method provides a high degree of sensitivity and specificity and is considered the gold standard for the isolation of S. enterica from food, environmental, and clinical samples. The tetrathionate broth method is widely used in diagnostic laboratories, and the results can be confirmed by biochemical tests, serological testing, or nucleic acid-based techniques.In conclusion, the growth in tetrathionate broth is a selective enrichment medium used for the identification of S. enterica. It suppresses the growth of other microorganisms in the sample, allowing for the isolation of S. enterica, which can then be confirmed by other diagnostic methods.
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which of the following statements about photosystem ii are correct? it is a multimolecular transmembrane assembly containing several polypeptides, several chlorophyll molecules, a special chlorophyll (p680), pheophytin, and plastoquinones. it transfers electrons to photosystem i via the cytochrome bf complex. it uses light energy to create a separation of charge, the potential energy of which can be used to oxidize h2o and to produce a reductant, plastoquinol. it uses an fe2 -cu center as a charge accumulator to form o2 without gener- ating potentially harmful hydroxyl radicals, superoxide anions, or h2o2.
Answers
The correct statement about photosystem II is that A. a multimolecular transmembrane assembly containing several polypeptides, several chlorophyll molecules, special chlorophyll (p680), pheophytin, and plastoquinones.
Photosynthesis is the process of combining various substances to produce food by plants involving sunlight. The main raw materials for plants to carry out photosynthesis are carbon dioxide, air, and chlorophyll with the help of sunlight.
Photosystem is a collection of chlorophyll whose function is to capture light at certain wavelengths. In the light reactions in the noncyclic cycle electrons will be captured by P680 (photosystem II). Photosystem II absorbs light energy carried by chlorophyll a which is sensitive to a wavelength of 680 nm (nanometers). Photosystem II is involved in the assembly of transmembrane multimolecules containing several polypeptides, several chlorophyll molecules, special chlorophyll (p680), pheophytin, and plastoquinones.
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Match the bacterial genetic element with the correct characteristic
a. chromosome-- nonessential genes
b.plasmid-- linear, single-stranded DNA
c.chromosome-- linear, double stranded DNA
d.plasmid--nonessential genes
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Small, circular, double-stranded DNA molecules called plasmids exist separately from a cell's chromosomal DNA. It contains non-essential genes.
Extrachromosomal DNA molecules are known as plasmids. They are compact, spherical, and capable of independent reproduction. Chromosome DNA is not in charge of plasmid replication. Most often, they are found in bacteria. Yeast and plants are examples of eukaryotes that contain plasmids. Plasmids are not necessary and are extrachromosomal. They are helpful but may not be found in every member of the species. The same plasmid can exist in various species and be passed from one to the next because it is not a component of the genome. Each daughter cell has a copy of the plasmid since plasmids have their own origin of replication (ORI) and proliferate with the cell.
Hence, plasmid of bacteria is extrachromosomal DNA with non essential gene.
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A euglena is a unicellular organism. Choose an everyday object, such as a car, to use as a model of this euglena. Explain how the parts of the object model how the euglena's cell parts help it stay alive.
Structure of Euglena
Read the assignment carefully and make sure you answer each part of the question or questions.
After you've written your response, go back and read it again to make sure your thoughts are clear.
Text that reads: Final draft.
An illustration of a box with a tick mark. Text that reads: Scoring Rubric.
This activity is worth 10 points. The length of your response will depend on the type of question. Responses should be written in complete sentences, illustrated with labeled diagrams, and/or calculated with all work shown.
You can use this general rubric for guidance on how your responses will be scored by your teacher. Once scoring is complete, your teacher will provide you with feedback on your performance.
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Teacher score: _______ out of 10
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The functions of different parts of the car to the functions of different organelles in the euglena.
How can a car model be used to show how the organelles of the unicellular euglena helps it to stay alive?The engine of the car can be compared to the chloroplasts in the euglena, as both are responsible for generating energy. Chloroplasts use photosynthesis to convert sunlight into energy-rich molecules such as glucose, while the engine of the car converts the energy stored in fuel into kinetic energy that can be used to power the car.
The wheels of the car can be compared to the flagella in the euglena, as both are involved in movement. The flagella of the euglena are long, whip-like structures that help it to move through water, while the wheels of the car allow it to move along roads.
The headlights of the car can be compared to the eyespot in the euglena, as both are involved in detecting and responding to light. The eyespot in the euglena is a pigmented structure that helps it to sense the direction of light and move towards it, while the headlights of the car allow the driver to see in low-light conditions.
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Identify two processes that from igneous rocks
Answers
Answer: Igneous rocks are formed by the melting and cooling of molten rock.
Explanation: Extrusive rocks are those that erupt as lava from volcanoes onto the surface. Intrusive rocks, on the other hand, are created when magma cools underneath.
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In order to protect a stream or lake from excessive inputs of nutrients and pollutants, we must protect its ____. a. riparian zones b. banks c. tributaries d. biodiversity e. watersheds
Answers
In order to protect a stream or lake from excessive inputs of nutrients and pollutants, we must protect its:
E. watersheds.
A watershed, also known as a drainage basin or catchment area, is an area of land that drains rainfall and runoff into a particular stream, river, lake, or other water body. It is defined by the topography of the land, with all the land uphill from a given point contributing water to the water body at that point. Protecting the watershed is crucial for maintaining the water quality of streams and lakes because any pollutants or nutrients that enter the watershed can eventually make their way into the water body through runoff or groundwater flow. By safeguarding the watershed, we can minimize the inputs of harmful substances and maintain the ecological balance of the aquatic ecosystem.
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In a group of jaguars, some individuals have a black coat and others have a spotted coat. In this group, the gene for the coat pattern trait has two alleles. The allele A is for a black coat, and the allele a is for a spotted coat.
Oracle, a jaguar from this group, has a black coat. Oracle has one allele for a black coat and one allele for a spotted coat.
Answers
Answer:
mark me brilliant
Explanation:
If Oracle has one allele for a black coat and one allele for a spotted coat, then the genotype of Oracle would be heterozygous. This can be represented as Aa, where A represents the allele for a black coat and a represents the allele for a spotted coat. Because the allele for a black coat is dominant over the allele for a spotted coat, the phenotype of Oracle would be black.
If a device is removed from one loop in a parallel circuit, the other devices are not affected and can still flow through them.
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Answer:
yes it still can flow through i hope that helped you
Explanation:
Answer:
Yes
Explanation:
What goaded means ?………..
Answers
Answer:
it means annoying someone
Where were the earth's landmasses located? How did they differ from today?
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Brainliest?
Explain how early colonial government worked in the Middle Colonies. Hogg go at C Zac
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During the early colonial period, the Middle Colonies, consisting of present-day New York, New Jersey, Pennsylvania, and Delaware, had a unique system of government that was influenced by both English and Dutch traditions.
The colonial governments in the Middle Colonies exhibited certain characteristics that set them apart from other regions.
One notable aspect of early colonial government in the Middle Colonies was the presence of diverse religious and ethnic groups. Unlike the New England colonies, which were primarily Puritan, and the Southern colonies, which were dominated by Anglicans, the Middle Colonies were home to a mix of religious denominations, including Quakers, Catholics, Lutherans, and Jews, among others. This religious diversity influenced the development of more tolerant and inclusive forms of governance.
The Middle Colonies typically had a two-tiered system of government. At the local level, each colony was divided into counties, which were further divided into townships. These local governments had elected officials, such as sheriffs, justices of the peace, and township supervisors, who were responsible for maintaining law and order, settling disputes, and overseeing local affairs.
At the colonial level, each Middle Colony had a governor appointed by the English monarchy or proprietary owners. The governor held executive authority and was responsible for representing the interests of the crown or proprietors. However, the governors' power was often balanced by the presence of an elected colonial assembly, which represented the interests of the colonists. The assemblies were composed of representatives chosen by eligible male landowners or freemen, and they had the authority to pass laws, levy taxes, and make decisions on behalf of the colony.
The Middle Colonies had a greater degree of religious and political freedom compared to other regions. Pennsylvania, in particular, established by William Penn as a Quaker colony, was known for its commitment to religious tolerance and democratic principles. The colony implemented a unique framework called the "Great Law" that provided for representative government, fair treatment of Native Americans, and freedom of religion.
Overall, early colonial government in the Middle Colonies reflected a blend of English and Dutch influences, with an emphasis on religious tolerance, local self-governance, and representative assemblies. This system of government laid the foundation for the democratic traditions that would later shape the United States.
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e a scenario where you perform the same cross but the puppies have unexpectedly mixed fur colors. if the ratio of black:red:brown:reddish-brown puppies is 9:3:3:1, what can you conclude about the pathway? hi
Answers
The observed ratio of black:red:brown:reddish-brown puppies being 9:3:3:1 suggests that there are multiple genes involved in determining the fur color and that these genes are segregating independently according to Mendelian inheritance patterns.
The pathway for fur color in this scenario likely involves the interaction of at least two genes. One gene could control the presence or absence of black fur, while another gene could control the presence or absence of red or brown fur. The dominance relationships among these genes and their alleles determine the final fur color phenotype.
It is possible that the inheritance of certain combinations of alleles from the parent dogs led to the mixed fur colors observed in the puppies. For example, if the parent dogs were heterozygous for different fur color alleles, the offspring could inherit different combinations, resulting in the observed ratio.
To further understand the pathway, additional breeding experiments and genetic analyses would be necessary to identify and study the specific genes and alleles involved in determining the fur color in the puppies.
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Human cells can use either an aerobic process or an anaerobic process to produce ATP for energy. What determines which cells will use?
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Answer:
Amount of Oxygen available.
how are the offspring produced in asexual reproduction different from those in sexual reproduction? in terms of agricultural studies, when would it be advantageous to produce an organism through asexual reproduction?
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Through reproduction, living things produce offspring that are genetically identical to themselves. Without it, there wouldn't be any more life on Earth. The offspring produced in asexual reproduction are identical to their parents.
While sexual reproduction inherit some unique genes and distinguishing characteristics from their parents, asexual reproduction are genetically identical to their parents. This is the key distinction between the progeny of asexual and sexual reproduction. It is possible for organisms to reproduce asexually, or without mating or sexual activity. Mitosis is, in other words, the process through which an organism develops offspring from unspecialized cells. The process through which organisms reproduce sexually, on the other hand, is referred to as sexual reproduction. Both female and male gametes (sperm) are engaged in this (egg). When the gametes join, an embryo is produced that has two sets of chromosomes—one inherited from the mother and one from the father.
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Identify the parts of the SARA-CoV-2 virus 7.type the correct part of the virus, indicated by the number 7, in the space below._______________________________8.type the correct part of the virus, indicated by the number 8, in the space below._________________________________9.type the correct part of the virus; indicated by the number 9, in the space below __________________________________________________
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7. ssRNA - it is the single-starnded RNS genome that contains 29891 nucleotides.
8. membrane of sarscov2 is a glycoprotein and considered as the most abundant envelope protein.
9. spike protein plays a role in the recognition of receptors and the process of fusion of cell membrane.
Imagine a population evolving by genetic drift in which the frequency of allele k is 0. 2. What is the probability that at some point in the future allele k will drift to a frequency of 1?.
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When a population evolves by genetic drift, the frequency of alleles can change over time due to random events. In a population where the frequency of allele k is 0.2, the probability that it will drift to a frequency of 1 at some point in the future is very low.
Probability Calculation:To calculate the probability of allele k reaching a frequency of 1, we need to use the equation:
p = 1 / (2N)
Where:
p = probability of fixation (reaching a frequency of 1)
N = population size
Population Calculation: Assuming a diploid population, if the frequency of allele k is 0.2, then the frequency of the other allele, let's call it allele K, is 0.8. Therefore, the total number of alleles in the population is:
2N = 2 x population size x number of individuals
Therefore, the number of alleles of k in the population is:
2Nq = 2 x population size x number of individuals x 0.2 = 0.4 x population size x number of individuals
To calculate the probability of allele k fixing in the population, we plug these values into the equation:
p = 1 / (2N) = 1 / (2 x 0.4 x population size x number of individuals) = 1 / (0.8 x population size x number of individuals)
The probability of allele k fixing in the population depends on the population size and the number of individuals. However, in a population of any size, the probability is always less than 1, meaning that there is always a chance that allele k will not drift to a frequency of 1.
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which of the following is not true regarding glycolysis? group of answer choices it is in both in aerobic and anaerobic respiration it occurs during fermentation it degrades glucose to co2 and h2o it occurs without oxygen it ends with the formation of an acid
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Glycolysis is a metabolic pathway that occurs in both aerobic and anaerobic respiration, during fermentation, and without the presence of oxygen.
Glycolysis is a fundamental metabolic pathway that occurs in both aerobic and anaerobic respiration, allowing cells to break down glucose and generate energy. It also takes place during fermentation, a process that occurs in the absence of oxygen.
However, it is important to note that glycolysis does not directly degrade glucose to \(CO_2\) and \(H_2O\), which is a characteristic of aerobic respiration. Instead, glycolysis breaks down glucose into pyruvate molecules, generating a small amount of ATP and NADH.
Moreover, glycolysis does not end with the formation of an acid; rather, it produces pyruvate or lactate, depending on the specific conditions and organisms involved.
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What makes birds and planes similar and different.?
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Answer:
Airplanes have wings, just like birds. They also have a light skeleton (or framework) to decrease their weight, and they have a streamlined shape to decrease drag. The big difference is that airplanes do not flap their wings.
Which idea explains Darwin’s observations about Galapagos Islands finches?
A) biological species concept
B) ecological species concept
C) endangered species extinction
D) sympatric speciation
Answers
Answer:
I think the answer is A) biological species concept
What type of blood vessels returns blood to the heart?
If you get this right I will give you Brianliest even if you attempt.
Not lying
Answers
Answer:
The blood vessels that returns blood to the heart is the superior and inferior vena cave,along with the aorta,are the great vessel's involved in systemic circulation.
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List three structures that are in a squid’s eye.
doing a dissection as well
Answers
Answer:
They have a camera-type eye which consists of an iris, a circular lens, vitreous cavity (eye gel), pigment cells, and photoreceptor cells that translate light from the light-sensitive retina into nerve signals which travel along the optic nerve to the brain.
Explanation:
hope this the answer you are looking for
explain the term.evapouration
Answers
Answer:
the process of turning from liquid into vapour
Answer:
Evaporation is a surface phenomenon, which implies that the process only occurs at the surface of the liquid. During evaporation, the molecules of the liquid that are present at its surface overcome the intermolecular forces of attraction to break away from the liquid and escape into the atmosphere as a gas (or vapour).
Or
The process of turning from liquid into vapour
This is the Answer for your question :3
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in drought conditions, many plants aren't able to survive because they do not have enough water to photosynthesize. which step in photosynthesis would be blocked by drought conditions?
Answers
In drought conditions, the step of photosynthesis that would be blocked is the light-dependent reactions which take place in the thylakoid membrane of the chloroplast.
Photosynthesis is the process by which green plants and some other organisms utilize sunlight to synthesize foods with the aid of chlorophyll pigments, carbon dioxide, and water. Photosynthesis in plants is carried out by organelles called chloroplasts, which contain chlorophyll pigment. Chloroplasts convert light energy into chemical energy in the form of ATP by using photosystems 1 and 2, which are complex arrangements of pigments and proteins.
The ATP produced is used in the dark reactions of photosynthesis (also known as the Calvin cycle), which occur in the stroma of the chloroplasts. The dark reactions take carbon dioxide and water to make sugars, with oxygen gas as a by-product. The process of photosynthesis can be divided into two parts: light-dependent reactions and light-independent reactions.
Light-dependent reactions: During light-dependent reactions, energy is obtained from sunlight and converted into chemical energy in the form of ATP, which is used in light-independent reactions. This process takes place in the thylakoid membrane of the chloroplasts. It is during this process that water is split into oxygen and hydrogen ions.
Light-independent reactions: During light-independent reactions, chemical energy in the form of ATP is used to convert carbon dioxide to glucose. This process takes place in the stroma of the chloroplasts.
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