Answers
True, aberrant oligodendroglial-vascular interactions disrupt the blood-brain barrier, triggering cns inflammation.
Disruption of the blood-brain barrier (BBB) is vital to initiation and perpetuation of disease in multiple sclerosis (MS). We document an interplay among oligodendroglia and vasculature in MS that distinguishes human white count number damage from regular rodent demyelinating damage. we discover perivascular clustering of oligodendrocyte precursor cells (OPCs) in certain lively MS lesions, representing an inability to properly detach from vessels following perivascular migration.
Perivascular OPCs can themselves disrupt the BBB, interfering with astrocyte endfeet and endothelial tight junction integrity, resulting in altered vascular permeability and an related CNS infection. Aberrant Wnt tone in OPCs mediates their dysfunctional vascular detachment and additionally ends in OPC secretion of Wif1, which interferes with Wnt ligand function on endothelial tight junction integrity.
Aberrant oligodendroglial-vascular interaction in MS indicates that aberrant OPC perivascular migration no longer most effective impairs their lesion recruitment but also can act as a ailment perpetuator thru disruption of the BBB.
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Related Questions
Which scenario will most likely lead to a decrease in population size?
high birth rate and low death rate
high birth rate and low immigration
low birth rate and low immigration
low death rate and high immigration
Answers
What is meant by a
mutualistic type of
symbiotic relationship?
A. One organism is unaffected.
B. Both organisms benefit. This
C. One organism is harmed.
Answers
B. Both organisms benefit.
Explanation:Symbiotic relationships are interactions between different species within an environment.
Mutualistic Relationships
Mutualistic relationships are interactions where both organisms are benefitted. One example is bees and flowers. In this relationship, the bees get food in the form of nectar and the flowers are pollinated by the bees. Both organisms are benefitted mutually; the bees can make honey and the flowers can reproduce.
Other Symbiotic Relationships
There are 2 other forms of symbiotic relationships. The first is commensalism: where one organism benefits but the other is unaffected. The other is parasitism: where one organism benefits and the other is harmed.
john has a wooden ball with a mass of 28 grams, a golf ball of 46 grams, and a metal ball of 110 grams. If he drops the balls at the sane time in what order will the balls hit the floor?
A. wooden ball, then golf ball, then metal ball
B. metal ball, then golf ball, then wooden ball
C. golf ball and metal ball together, then wooden ball
D. all three balls hit the floor about the same time
Answers
Answer:balls
Explanation:
1 What does the codon sequence on the mRNA strand determine?
A The gene sequence of the DNA
B The amino acid sequence of the polypeptide
C The codon that is signaled
D The signaling sequence
2 What portion of the DNA is also known as a gene?
A The coding sections
B The non-coding sections
C The mRNA strand
D The polypeptide sequence
Answers
1. The correct answer is B.
2. The correct answer is A.
The codon sequence on the mRNA strand determines the amino acid sequence of the polypeptide.
The coding section is the portion of the DNA that is also known as a gene. Genes are the functional units of DNA that provide the instructions for making proteins. They are composed of coding cells, also known as exons, that contain the information needed to build the polypeptide, and non-coding sections, also known as introns, that do not.
The codon sequence on the mRNA strand is translated by the ribosome during protein synthesis. Each codon, which is a sequence of three nucleotides, corresponds to a specific amino acid. The ribosome reads the codon sequence on the mRNA strand and adds the corresponding amino acids to the growing polypeptide chain. This process is called translation.
In DNA, genetic information is encoded in the sequence of nucleotides, which are the building blocks of DNA. Genes are specific segments of DNA that contain the instructions for making a specific protein. These instructions are encoded in the sequence of nucleotides within the coding sections of the DNA, also known as exons. The non-coding sections, also known as introns, do not contain instructions for making proteins, but they play important roles in the regulation of gene expression.
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Prokaryotes are single-celled organisms belonging to the Domains: Archae and Bacteria. Which of the following cell structures would not be present in prokaryotic cells?
Answers
Answer:
Prokaryotic cells are simple cells that lack membrane-bound nuclei and complex organelles. Endoplasmic reticulum, microtubules, and the Golgi apparatus are unique to eukaryotic cells, and will not be found in prokaryotes.
Explanation:
Prokaryotes belonging to the domains Archae and Bacteria lacks membrane-bound organelle and nucleus.
What are prokaryotes?Prokaryotes are unicellular organisms.'Pro' means 'primitive' and 'karyon' means 'nucleus'.Instead of nucleus, nucleoid is present.They lack membrane bound organelles.What is Archae?They are unicellular prokaryotes.They share some features with eukaryotes.They lack membrane bound organelles and have nucleoid.What is bacteria?They are unicellular prokaryotes found in normal to extreme conditions.They lack membrane bound organelles and have nucleoid instead of nucleus.Hence, the cell structures not present in prokaryotic cells include nucleus and membrane-bound organelles.
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If, somehow, the number of daylight hours did not change throughout the year, but Earth
was still tilted at 23.5°, would there still be seasons in the Northern and Southern
Hemispheres of Earth? Would the temperature difference between the seasons still be as
great? Explain your reasoning.
Answers
Answer:
There would still be seasons, because the intensity of light would still change throughout the year, due to the earth's tilt.
Explanation:
If, somehow, the number of daylight hours did not change throughout the year, but Earth was still tilted at 23.5° then-
Yes, there would still be seasonsNo, the temperature difference between the seasons would not be as greatThe tilt of the Earth's axis at 23.5° leads to the different parts of the Earth to gets a high or less amount of direct sunlight at different times of the year.
If there would be no tilt of the earth then there would be no seasons on Earth.If the number of daylight hours did not change then seasons still be there due to the intensity of light would still change throughout the year as the earth is still tilted. If the number of daylight hours did not change throughout the year then the temperature difference would not be as great due to less light in the daytime will not be able to heat enough and the Earth would not be heated for a longer time in summer.Thus, the correct answer is -
Yes, there would still be seasonsNo, the temperature difference between the seasons would not be as great.Learn more about the earth's tilt:
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BIOLOGY- 5 questions
1. Which organisms have the greatest amount of stored energy to make available to the
next level?
2. Name at least three secondary consumers in this ecosystem.
3. Which organism(s) are functioning as producers in this ecosystem?
4. How much of the energy available to the chipmunk is it able to pass on to the owl?
5. If the mouse population experienced a decline, why would the hawk population
experience a greater impact than the fox population in this ecosystem?
Answers
Answer:
1. Oak tree and grass (not sure ahahahha)
According to the pyramid energy, the energy content is maximum in autotrophs or producers
2. Robin, chipmunk, mouse
3. oak tree and grass
4. 0.9kj
5. the hawk population will experience a greater impact than the fox population in this ecosystem because there is only two animals which are mouse and chipmunk that can consumed by hawk. For the fox, there are 4 type of animals to consume which are cricket, chipmunk, rabbit and mouse. Hawk consume less type of animals thus it will experience a greater impact compared to fox
Which of the following describes a boreal forest?
A biome occurring at high northern latitudes that is dominated by conifers that can withstand the long, cold winters
A blome in tropical regions where rain falls seasonally and broad-leaved trees dominate
A blome dominated by broad-leaved trees that flower and grow in warm seasons, Inen drop their leaves and become
dormant during cold winters
A biome dominated by a multilayered forest that occurs where warm temperatures and continual rains allow plant
growth year-round
Answers
Answer:
A
Explanation:
a pure substance is just one element, or one or elements that is bonded to another. Which of these is NOT a pure substance
gold- it's an element
oxygen-it's an element
carbon dioxide -it's a compound
koolaid- it's dissolved
Answers
Answer:
Sorry for the late answer, I got carried away.
Koolaid is the substance that is not pure.
Explanation:
Koolaid contains water, sugar & coloring, but is not a pure substance because each of the ingredients can differ each time it is made. it is the same throughout and can be separated, therefore it is also a homogeneous mixture.
Identify a minimum of three benefits and risks associated with genetically engineered plants.
Answers
Higher yield, more food and more profit are the benefits of genetically engineered plants whereas production of toxins and allergic reactions are the risks of genetically engineered plants.
What are the benefits of genetically engineered plants?Genetically engineered plants has many benefits such as greater access to affordable and healthy food, higher crop yields, and more profits for farmers.
What are the risks of genetic engineering in plants?
Genetically engineered crops could be harmful because these crops sometimes produces toxins which causes more damage to the people. Genetically engineered crops could cause allergic reactions in people. Pollen produced by the plants could be toxic and harm insects that transfer it between plants.
So we can conclude that higher yield, more food and more profit are the benefits of genetically engineered plants whereas production of toxins and allergic reactions are the risks of genetically engineered plants.
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What percent of the US's energy currently comes from renewable resources?
A. 37%
B. 17%
C. 1.7%
D. 7%
Answers
Which sentences describe the differences between photosynthesis
cellular respiration?
Check all that apply.
Answers
describe how impulse are transmitted across a synapse
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A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.
What are the impulse?Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.
The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.
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Biology i will give brainliest
Answers
Exponential growth. Which is represented by a J curve.
Without resources acting as a limiting factor for the population the population will be able to grow exponentially.
Then pen in a squid is believed to have come from what:
A evolution: the squid lost its other bones
Bevolution: the squid lost its tail
Csquids do not have pens
B evolution: the squid lost its shell
Answers
Answer:A evolution: the squid lost its other bones
Explanation:The pen, a stiff, rod-like structure found in the body of some species of squid, is believed to have evolved from the remnants of a once more extensive skeleton that the animal no longer needed. Over time, as the squid evolved, it lost many of its bones, including those in the tail, leaving only the pen as a remnant of its evolutionary history. This is known as a process of reduction, in which an organism reduces its overall skeletal structure as it adapts to its environment and changes in behavior or anatomy.
Is enzyme activity a form of cell regulation
Answers
Enzymes can be regulated by other molecules that either increase or reduce their activity. Molecules that increase the activity of an enzyme are called activators, while molecules that decrease the activity of an enzyme are called inhibitors.
The Law of Conservation of Energy states that energy cannot be created or destroyed, but energy can change *
A) its total mass
B) its total volume
C) from one form to another
D) from one state of matter to another
Answers
Answer:
C
Explanation:
Energy can change from one form to another.
The last point of natural selection states that offspring that are better adapted are more likely to produce offspring. Which option is an example of this point?a.salmon produce offspring through sexual reproductionb.several corn plants in a field are resistant to pests and low water levelsc.rabbits with longer fur survive colder winters and will produce offspringd.a queen bee lays thousands of eggs
Answers
We have to consider that, as the question's statement tells us, individuals that are better adapted, are more likely to produce offspring, and this is because they will be more prepared for the environmental pressures, such as predation, hot temperatures, and low levels of humidity, do the traits these organisms bear, will be passed to the future generations, increasing the frequency of those particular traits that enabled them to survive, and overall decreasing the traits that the organisms which didn't survive didn't pass to the next generations.
This leads us to say that the correct answer could be the second one, "several corn plants in a field are resistant to pests and low water levels", but the most accurate statement is the third one because it tells us if that trait of the individuals make them more capable of surviving and reproducing, "C. rabbits with longer fur survive colder winters and will produce offspring".
If you are looking under a microscope at cells, identifying cells in metaphase is relatively easy to do. Why?
Answers
Answer:
Explanation: The chromosomes are more visible through the microspoce
Place the following steps of the inflammatory response in correct order:Pathogens enters the bodyAnswer 1White blood cells travel to the areaAnswer 2Histamine is releasedAnswer 3Cell recognizes invaderAnswer 4Redness and swelling occurAnswer 5
Answers
To answer this we need to remember how the inflammatory process works, a cut is open where the pathogen enters the body, and the histamine is released creating vasodilation, which increases the blood flux, redness, and swelling Leucocytes like phagocytes arrive and platelets start to seal the broken capillaries. Therefore the order is as follows.
Pathogens enter the body (1)
White blood cells travel to the area (4)
Histamine is released (2)
Cell recognizes invader (5)
Redness and swelling occur (3)
inquiry based pedagogy is being embraced in principle across the globe. in the last decade , it has been supported by an increasing body of research on its effectiveness. illustrate your understanding of the concept of inquiry based pedagogy with a relevant example
Answers
Inquiry-based pedagogy involves fostering curiosity and active learning. For example, students investigating real-world environmental issues and proposing solutions.
Inquiry-based pedagogy is a teaching approach that promotes active learning and critical thinking through inquiry and exploration. One relevant example of inquiry-based pedagogy is a science classroom where students are encouraged to design and conduct their own experiments. Instead of simply following instructions, students formulate research questions, develop hypotheses, plan and execute experiments, collect and analyze data, and draw conclusions. For instance, students may investigate the effect of different variables on plant growth by manipulating factors like light, water, or soil composition. This approach allows students to engage in authentic scientific practices, develop problem-solving skills, and gain a deeper understanding of the scientific method. By actively participating in their learning process, students develop a sense of ownership and become more engaged, fostering a love for learning and nurturing their ability to explore and discover knowledge independently.For more such questions on Pedagogy:
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HOMOLOGOUS CHROMOSOMES SEPERATE FROM EACH OTHER WHAT STAGE
Answers
Answer:
Homologous chromosomes separate from each other during anaphase I of meiosis.
Explanation:
Meiosis is a specialized type of cell division that occurs in sexually reproducing organisms. It involves two rounds of cell division, known as meiosis I and meiosis II, which result in the formation of haploid gametes (sperm or eggs) with half the number of chromosomes as the parent cell.
During meiosis I, homologous chromosomes pair up and exchange genetic material in a process called crossing over. Then, during anaphase I, the homologous chromosomes separate from each other and migrate to opposite poles of the cell. This is followed by telophase I, cytokinesis, and the formation of two new cells, each with a haploid set of chromosomes.
In contrast, during meiosis II, the sister chromatids of each chromosome separate from each other and migrate to opposite poles of the cell, resulting in the formation of four haploid daughter cells.
When the hilum of the kidney faces anteriorly, posteriorly, or laterally instead of medially, it is called
Answers
Answer:
Answer: skeletal system. When the hilum of the kidney faces anteriorly, posteriorly, or laterally instead of medially, it is called. a malrotated kidney.
Explanation:
The allele for black fur (B) is dominant to the allele for white fur (b) in rats. If you have a black rat and you want to know it s genotype (whether it is BB or Bb), you could perform a testcross. Please tell me what kind of rat (what color) you would mate your black rat with in a testcross. Explain what results you will get if your unknown black rat is BB, and explain how this differs from the results you will get if your unknown black rat is Bb. How will the results help you to determine the genotype of your black rat?
Answers
honestly
Explanation:
I think it would end up being a black rat since black rats have more power then others.
Summarize the findings of other scientists in Germany and Boston that support the work of Calderon-Garciduenas
Answers
Calderón-Garcidueñas has conducted research on the impact of air pollution on the brain and cognitive function. Other scientists in Germany and Boston have also conducted studies that support her work and findings.
In Germany, a group of researchers conducted a study to investigate the effects of air pollution on brain structure and cognitive function in a large population of older adults. The study utilized neuroimaging techniques to assess brain volumes and cognitive tests to evaluate cognitive performance. The findings revealed a significant association between long-term exposure to air pollution and reduced brain volume in regions related to memory and learning. The study also found that higher levels of air pollution were associated with poorer cognitive performance in various domains.
In Boston, researchers focused on the impact of air pollution on children's brain development. They conducted a study involving a cohort of children and assessed their cognitive abilities using standardized tests. The study found that children exposed to higher levels of air pollution exhibited lower cognitive scores, particularly in areas related to attention, memory, and language skills. The researchers also observed structural changes in the brain, specifically in regions involved in cognitive control, in relation to air pollution exposure.
These studies from Germany and Boston provide additional evidence supporting Calderón-Garcidueñas' findings regarding the detrimental effects of air pollution on the brain and cognitive function. They reinforce the notion that long-term exposure to air pollution can lead to structural changes in the brain and have a negative impact on cognitive abilities. The collective findings highlight the importance of addressing air pollution as a public health concern and implementing measures to reduce pollution levels to safeguard brain health and cognitive development, particularly in vulnerable populations such as children and older adults.
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describe thermal energy in your own words
Answers
Answer:
Due to the movement of particles within that object or system, thermal energy is energy owned by an object or a system. ... The result of thermal energy is that an object or system has a temperature that can be measured. Thermal energy can be transferred in the form of heat from one object or system to another.
Explanation:
which scientist developed a method to describe the consistency of the fine grained soils with varying contents?
Answers
Answer:
Albert Atterberg (Swedish) scientist
in which situation would hydroponics be most useful for sustainable farming?
Answers
Hydroponics may be a sustainable farming technique that can help with some of the issues that traditional soil-based farming presents.
What is hydroponics?In hydroponics, plants are grown in nutrient-rich water solutions rather than in soil. It can be an effective sustainable farming technique that is especially helpful in locations with little arable land, bad soil, or restricted water supplies.
Here are some scenarios in which hydroponics may be most beneficial for environmentally friendly farming:
Urban farming: There is typically little room for agriculture in heavily populated cities. Hydroponics is a perfect method for urban agriculture since it enables vertical growing in constrained areas like rooftops, balconies, or enclosed places.
Water conservation: By recycling the nutrient-rich water solution, hydroponics can be utilized to preserve water in locations with limited water supplies. Compared to conventional soil-based farming, the water can be reused numerous times, lowering the overall amount of water required for plant development.
Contaminated soil: Growing wholesome crops may be challenging in regions where the soil is contaminated with heavy metals or pollution. Plants may grow in a sterile, controlled environment thanks to hydroponics, which does away with the requirement for dirt.
Climate change: Hydroponics can offer a stable environment for plant growth, independent of changes in the weather, and can assist farmers in maintaining a steady supply of fresh produce in regions with extreme weather conditions, such as droughts or floods.
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Why would precipitation be scarce during a drought?
Answers
Which best completes the analogy?
Bronchioles : Trees :: Lungs :
Answers
The trachea is what best completes this analogy in the respiratory system of organisms.
What is an Analogy?This is used to depicts how two or things may be alike which is why trachea was chosen.
This is because it and the bronchioles make up the bronchial tree and they both distribute air to the lungs.
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