where in the nucleosome are the amino acids lys and arg found
Answers
Amino acids lys and arg are positively charged amino acids, and they are commonly found on the histone tails of the nucleosome structure.
Nucleosomes are fundamental units of chromatin, which play an important role in regulating gene expression. The lysine and arginine residues on histone tails have a significant influence on nucleosome stability and interaction with other proteins. The tail regions are also subject to various post-translational modifications such as methylation, phosphorylation, and acetylation. These modifications can affect the way histones interact with DNA, leading to changes in gene expression.
The nucleosome is composed of a histone octamer, which includes two copies each of histone H2A, H2B, H3, and H4. These histone proteins are responsible for the packaging and organization of the DNA. Lys and arg are positively charged amino acids, which help in binding to the negatively charged DNA phosphate backbone.
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Related Questions
I REALLY NEED HELP ASAP!!!!!!!
*I attached a picture but heres the question just in case!"
"The diagram below shows the structures of an animal cell. What is structure 3, and how does it help sustain life?"
Answers
Answer: I think it’s B but I am not sure sorry dude
Explanation:
Question #7
The top consumer in an ecosystem is referred to as the what?
Answers
Answer:
They are referred to as tertiary consumers.
The hindbrain is mainly responsible for:
A. communication between all parts of the brain.
B. logical thought and language.
C. processing sensory input.
D. basic life functions and muscular coordination.
Answers
Answer:
basic life functions and muscular coordination.
Explanation:
I thought benzoic acid was obtained from styrax benzoin since gum benzoin is obtained from it. any help here please.
Answers
Answer:
Yes you are right
Explanation:
hope it helps
analysis of the spinal tap shows the presence of gram-negative bacteria cocci; for this age group which bacteria would be the probable cause of these symptoms?
Answers
The bacteria would be probable cause of these symptoms is Neisseria meningitidis.
The outer membrane of Gram-negative bacteria contributes to their ability to cause disease. In the decades that followed group, B Streptococcus replaced Staphylococcus aureus as the most common Gram-positive bacterium causing early-onset sepsis.GBS and E. coli are currently the most frequently identified organisms.
When someone gets meningococcal sepsis the bacteria enter the bloodstream multiply and damage the walls of blood vessels. This leads to bleeding of the skin and organs. Symptoms may include fever and chills. Meningococcal meningitis is caused by a bacterium known as meningococcus. There are several species or serogroups of meningococci.
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HELP WILL GIVE BRAINLIEST FOR CORRECT ANSWER
Which of the following would have the most negative effect on a community?
a. Random dispersion patterns
b. Low species diversity
c. Removal of a primary consumer
d. Removal of a keystone species chemical energy
Answers
Answer:
D
Explanation:
Without keystone species, the ecosystem would be dramatically different or cease to exist altogether.
Explain groups of plants and their difference
please help
i will sure mark you as brainliest
Answers
Answer:
Hope this helps.
Explanation:
Trees for example that are deciduous compared to trees that are not. Dicots and monocots. On and on.
How does blocking out the sun with thick dark clouds affect this mechanism that you see in the figure
Answers
Answer: the sun powers the whole thing
please answer!! ASAP
1. What is biodiversity?
a) The animals that live only in rain forests.
b) The rich variety of live organisms in every
ecosystem on Earth.
c) The animals and plants species that live
only in your backyard.
2. Why do we need biodiversity?
a) it provides us with the food we need to eat
b)it provides us with virtually all the things we need to stay alive
c)so we have plenty of trees to use for fuels and materials
3.which of the following places has the highest biodiversity?
a)madagascar &indian ocean islands
b)tropical andes
c)caribbean islands
4. how many biodiversity ‘hotspots’ are there in the world?
a)12
b)25
c)34
5. in these ‘hotspots’ how much of the worlds species are found there?
a)10%
b)25%
c)50%
6. what does ‘endemic’ mean?
a) when a lot of people fall ill
b) when something is only found in one place
c) when a disease spreads throughout the world
7. why is biodiversity under threat?
a) habitat destruction
b)introduction of exotic species
c) both of the above and more
8. what can you do to help save biodiversity?
a) reduce, reuse, recycle
b) plant trees, clean local rivers and parks and protect habitats
c) all of the above
Answers
1.B
2.B
3.A
4.36
5.B
6.C
7.C
8.C
thanks me
prions are prions are infectious circular rna molecules that replicate in host cells. infectious misfolded proteins that cause normal protein molecules to misfold. the site of protein synthesis in prokaryotic cells. simple viruses composed of protein. primitive protein particles that are believed to be an ancient precursor of living cells.
Answers
Prions are infectious misfolded proteins that cause normal protein molecules to misfold.
Prions are infectious misfolded proteins that have the ability to induce normal, correctly folded proteins to adopt an abnormal conformation. This misfolding process can lead to the accumulation of these abnormal proteins, causing damage to tissues and organs. Prion diseases, such as Creutzfeldt-Jakob disease and mad cow disease, are characterized by the presence of these misfolded prion proteins. Unlike traditional infectious agents like viruses or bacteria, prions do not contain genetic material such as RNA or DNA. They are primarily composed of protein and are able to self-replicate by inducing the misfolding of normal proteins into their own abnormal conformation.
It's important to note that prions are not circular RNA molecules, as mentioned in the initial statement. They do not replicate in host cells through the typical processes of RNA replication or transcription. Prions are distinct entities that propagate by transmitting their misfolded conformation to normal proteins, leading to a chain reaction of misfolding and aggregation. This unique mechanism sets them apart from other infectious agents and contributes to their pathogenicity.
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if 100 alleles contribute to a certain trait, what kind of complex inheritance pattern is this?
Answers
Answer:
Pedigrees. diagrams that shows the history of a trait from one generation to the next.
Autosomal disorders. Every disorder that is too do with genetics, but not chromosomes or genes.
sickle cell. ...
cystic fibrosis. ...
Huntington's disease. ...
complete dominance. ...
incomplete dominance. ...
codominance.
Genes for traits are found on _____________.
Responses
A chromosomeschromosomes
B the cell membranethe cell membrane
Question 2
Mendel studied heredity in _______ plants.
Responses
A peapea
B beanbean
Question 3
Mendel noticed that various traits in the plants were passed down ________.
Responses
A independently
Answers
Genes for traits are found on chromosomes
Mendel studied heredity in pea plantsMendel noticed that various traits in the plants were passed down independentlyWhat are the Genes?
Traits in living things are decided by genes, which are found on chromosomes. They are found on tiny cells inside an organism called chromosomes.
In simple terms, chromosomes have something called DNA, which has specific parts called genes. These genes have instructions for making certain traits. When creatures have babies, they give them chromosomes. These chromosomes have genes that decide how the baby will look and act.
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Predict the results of a mating between a hemophiliac male and a carrier female. Hemophilia is a SEX LINKED, RECESSIVE trait. Fill in the following information.
21. Genotype male _______
22. Genotype female _______
23. Punnett square:
% of total offspring:
24. % normal males ________
25. % hemophiliac males ________
26. % normal females _______
27. % hemophiliac females _______
28. % carriers _______
Answers
21.Genotype male: XhY
22. Genotype female: XHXh
23. Punnett square: XH Xh
24. % normal males: 25% (1 out of 4)
25. % hemophiliac males: 25% (1 out of 4)
26. % normal females: 25% (1 out of 4)
27. % hemophiliac females: 25% (1 out of 4)
28. % carriers: 50% (2 out of 4)
What is a Punnett square?The Punnett square is described as a square diagram that is used to predict the genotypes of a particular cross or breeding experiment.
We can see from the Punnett square the possible genotypes of the offspring.
We see that there are are four possible genotypes:
XHXh (carrier female) XhXh (hemophiliac female), XY (normal male), Y (normal male).The percentages shows the proportion of each genotype that is among the total offspring which is four.
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A research group is looking for a way to use spider silk, valued for its high tensile strength, to make extremely strong ropes, but spiders only produce small amounts of silk. they have isolated the gene and have inserted it into cows to produce the silk protein in their milk where the scientists can collect it in large quantities. what is this process called? a. bioreaction b. transgenics c. artificial selection d. recombination
Answers
Option (B) Transgenics is the correct answer.
Transgenics involves one or more DNA sequences being artificially introduced into an organism that wouldn't usually have them.
What is Transgenics?The term "transgenic" refers to organisms with modified genomes.For scientific investigation, most transgenic organisms are produced in laboratories. A particular gene of interest is disabled in transgenic mice called "knock-out" mice. Researchers can learn more about the normal operation of the gene by researching its consequences.It is possible to alter the genomes of living things with contemporary genetic technology. The term "genetic engineering" also applies to this method.Additionally, commercial uses for transgenic organisms have been created. Food crops like soy and peas that have undergone genetic modification to become resistant to pesticides and herbicides are probably the most well-known examples.Hence, Transgenics entails the artificial introduction of one or more DNA sequences into an organism that wouldn't typically contain them.
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What is a term that describes and organism that CAN make its own food?
Answers
Answer: An Autotroph
Explanation: Organisms that can produce their own food using light, water, carbon dioxide, or other chemicals are called Autotrophs.
Answer:
Autotrophs
Explanation:
An autotroph makes its own food using light, water, carbon dioxide, and other chemicals.
80% of a school population has the dominant eye color. What is the allele frequency of the dominant trait?
Answers
The allele frequency of the dominant trait is 0.894.
What is the allele frequency of the dominant trait?The allele frequency of the dominant trait is determined using the Hardy-Weinberg equilibrium equation below:
p² + 2pq + q² = 1where;
p is the frequency of the dominant allele.q is the frequency of the recessive allele.p² is the frequency of individuals homozygous for the dominant allele.q² is the frequency of individuals homozygous for the recessive allele.2pq is the frequency of heterozygous individuals.Given data:
80% of the population is homozygous dominant (p²) and 20% of the population is heterozygous (2pq).
p² = 0.80 (frequency of individuals homozygous for the dominant allele)
2pq = 0.20 (frequency of heterozygous individuals)
solving for p:
√p² = √0.80
p = 0.894
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in the pelvic girdle, the two hip bones unite posteriorly with the sacrum to form the __________ joint.
Answers
Answer: Sacroiliac joint
Explanation: they all meet together
Brown lizard that has invaded some areas of Florida
Answers
please write a clear and appropriate question
Answer:
Brown Anole
Explanation:
Hope it helps.
All cell membranes have the same ____ structure, with the ____ of the phospholipids facing into the interior membrane and the (blank) on outside
Answers
All cell membranes have the same basic structure, with the hydrophobic tails of the phospholipids facing into the interior membrane and the hydrophilic heads on the outside.
The structure of the cell membrane is crucial for maintaining cellular integrity and function. Any disruption to the membrane, whether through physical damage or chemical agents, can have severe consequences for the cell and the organism as a whole.
This arrangement creates a bilayer, which serves as a barrier that separates the interior of the cell from the external environment. The hydrophobic tails of the phospholipids interact with each other, forming a stable interior, while the hydrophilic heads interact with water, allowing the membrane to be impermeable to most polar or charged molecules.
In addition to phospholipids, cell membranes also contain other lipids, such as cholesterol and glycolipids, which contribute to the fluidity and stability of the membrane. Proteins are also present in the membrane, serving various functions such as transport, signaling, and structural support. Some proteins are embedded within the membrane, while others are attached to the surface.
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Bacteria can reproduce by exchanging DNA. This exchange is called:
Binary Fission
Conjugation
Endospore production
Sexual reproduction
Answers
Answer:
conjugation
Explanation:
Bacteria reproduce by binary fission, resulting in two daughter cells identical to the parent cell. Bacteria can exchange DNA through the processes of conjugation, transformation, or transduction.
No matter how long and hard lerae studies, she always feels she hasn't studied as much as she should have. A freudian psychologist would suggest that lerae shows signs of a
Answers
6. Two scientists want to compare their research of fireflies. Which
information must the two scientists provide to each other to determine if
they studied the same type of fireflies? (B.8, A) *
Size of the firefly populations
Type of habitat in which the fireflies live
O Color of light produced by the fireflies
O Species name of the fireflies studied
Answers
Answer:
its the last answer "species name of the fireflies studied"
i took a quiz with the same question and got it right
Species name of the fireflies studied is the information which should be
provided.
What is Species?These refers to organisms which are capable of interbreeding. They usually have the exact same features.
Scientists researching about organisms must know the exact specie as
there are different types present in organisms which makes option D the
most appropriate.
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O processo de excreção permite que o homem se livre de substâncias que são tóxicas e inúteis ou que estão em excesso. Em condições fisiológicas normais, uma pessoa saudável deve eliminar, na urina: a. Agua, uréia, sais minerais e pigmentos. b. Agua, ácido úrico, proteínas e glicose. c. Agua, uréia, glicose e sais minerais. d. Agua, proteínas, sais minerais e pigmentos. e. Agua, amônia, hormônios e polissacarídeos.
Answers
Answer:
a. Water, urea, mineral salts and pigments
Explanation:
The composition of urea of a normal healthy human consist of Water, urea, mineral salts and pigments. The water which is present in excess amount in our body will be removed by the body. Our body need salts in low amount which is taken from the food while the excess amount of salts and some pigments in the foods are also removed through the process of excretion and added into the urine. Due to these pigments, the color of urine is yellowish.
how many different trisaccharides can be made by linking one glucose, one mannose, and one galactose?
Answers
One glucose, one mannose, and one galactose can be linked to create one of the 12,288 possible trisaccharides, but only one of the six possible tripeptides.
Trisaccharides are oligosaccharides made up of three monosaccharides connected by two glycosidic linkages. Similar to the disaccharides, any hydroxyl group on the constituent monosaccharides can be used to build a glycosidic link. Even if the three constituent stachyose are all the same (for example, glucose), various bond configurations (regiochemistry) and stereochemistry (alpha- or beta-) lead to trisaccharide diastereoisomers with distinct chemical and physical properties. One glucose, two galactose, and one fructose unit are connected by three glycosidic linkages to form the tetrasaccharide known as stachyose. Proteins with a high sweetening index include monellin and thaumatin.
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.
Draw a hierarchy of Animals. The hierarchy should include the following entities: Animal, Reptile, Mammal, Bear, Human, Dolphin, and Iguana.
Answers
To create a hierarchy of animals, you can follow these steps:
1. Start with the most general entity, which is "Animal."
2. Under "Animal," create two sub-categories: "Reptile" and "Mammal." These are two distinct classes of animals.
3. Under "Reptile," add "Iguana" as it is an example of a reptile.
4. Under "Mammal," create three sub-categories: "Bear," "Human," and "Dolphin." These are examples of mammals belonging to different families.
The resulting hierarchy is as follows:
- Anima
- Reptile
- Iguana
- Mammal
- Bear
- Human
- Dolphin
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In the autumn, many birds will collect seeds and then hide them in various caches throughout their habitat. The birds will guard their caches from other birds, and move the caches if they start to dry out. These caches provide a food source for the birds during the winter. What is an abiotic factor that contributed to the evolution of this set of behaviors? A. being preyed upon by larger birds B. competition with other birds for space C. limited food availability D. cold winter climate
Answers
Answer:cold winter climate
Explanation:During winter specially in the eastern and western part of the world....snows bury grounds and food that enables this organisms live....and cold can also affect them
Answer:
Answer: c. limited food availability
Explanation:
Both biotic and abiotic factors are responsible for shaping the evolutionary framework of the population. Resource availability can be one of the important abiotic factor in determining the evolutionary dynamics of the population or species. Limitations in resource can result in increase in competition. According to population exclusion principle when two species compete for the same limiting resource this results in co-evolution of both the species. But the extent of evolution may vary among the species. The one which undergoes more favorable evolution will be stronger competitor and drive more resources and will be fit for survival in adverse limiting conditions.
pls help trulyhelp for 25 point not lying pls help asap
Answers
Answer:
Im not sure what your exactly asking but for the last question just say something along the lines of how Europe was the highest popualtion dessity and Australia has the lowest. Do you need help with the bar graph?
Explanation:
Answer: You can say that there is sometimes a pattern in the numbers. In the graph, The density of Africa minus North America's density equals 2, and the density of North America minus South America's density also equals 2.
Sorry, if this didn't help and also if it is not the right answer.
The MMR (measles, mumps, rubella) vaccine requires multiple immunizations in the first year because it is composed of whole killed viruses. Group of answer choices True False
Answers
The MMR (measles, mumps, rubella) vaccine requires multiple immunizations in the first year because it is composed of whole killed viruses is false.
What is immunization?Immunization is defined as the procedure of administering a vaccination to a person in order to protect them from illness. Vaccines are a method of inducing immune system activation to ward off infectious diseases. Immune system activation happens when an immunogen is used to prime it. Immunization is the process of inducing immune responses with an infectious agent.
The MMR vaccine is advised by the CDC to protect against measles, mumps, and rubella. Two doses of the MMR vaccine should be given to children, the first at 12 to 15 months of age and the second at 4 to 6 years of age. Adults and teenagers should both be current on their MMR vaccinations.
Thus, the MMR (measles, mumps, rubella) vaccine requires multiple immunizations in the first year because it is composed of whole killed viruses is false.
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Alchemy is the process of trying to turn non-gold metals into gold. It was practiced hundreds of years ago by scientists who believed that with the right amounts of heat or chemical reactions, they could make gold. After years of experiments and observations, gold was never produced. Which best describes the practice of alchemy? Alchemy was scientific, because scientists practiced it. Alchemy was scientific, because it included observations and experiments. Alchemy was pseudoscientific, because beliefs came before any observations of success. Alchemy was pseudoscientific, because some successful experiments inspired others.
Answers
Answer:
Alchemy was scientific, because it included observations and experiments
Explanation:
Scientific research is one that is done through a series not steps or methods. Observation and experiments are part of the steps in a scientific research.
Scientific research is done through investigation of various theories of science as well as formulating hypothesis. Scientists do not just resort to picking random answers concerning the phenomenons around us. They carry out investigations, observations, and would also formulate potential explanations for what is on ground, carry out experiments and then analyze their results to know if they are right or wrong.
Since the question says observation and experiments were done it is scientific
Answer:
C.
Explanation:
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Investigate what the concept responsible citizens means and state two factors that may contribute to the youth being hesitant to conduct themselves as responsible citizens
Answers
The concept of responsible citizens refers to individuals who take an active role in their community and society, contributing positively to the welfare of others and the environment. Responsible citizens exhibit qualities such as integrity, respect for diversity, and a sense of social responsibility. They participate in civic activities, follow the laws, and promote social justice.
However, some factors may contribute to the hesitation of youth in conducting themselves as responsible citizens. One factor is the lack of positive role models and guidance from adults. Youth who do not have positive influences in their lives may not understand the importance of being responsible citizens. Another factor is the lack of trust in the government and political system. Youth may feel disillusioned by the political system and believe that their actions will not make a difference in society.
In conclusion, responsible citizens are individuals who take an active role in promoting the welfare of others and society. However, some factors such as the lack of positive role models and trust in the government may contribute to the hesitation of youth in conducting themselves as responsible citizens. It is important to address these factors and provide positive influences and guidance to youth to encourage them to become responsible citizens.
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