Answer: a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Explanation: can u help me by answering my two new questions
The molecular motors of the _______ superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the _____end of an actin filament.
Answer:
Myosin, plus
Explanation:
The molecular motors of the myosin superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the plus end of an actin filament.
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You send a skin scraping to the hospital lab for analysis. The report comes back indicating the presence of unicellular organisms that stained with calcofluor white stain, which binds to chitin. This organism is thus a ________, which is a ________ organism.
The report comes back indicating the presence of unicellular organisms that stained with calcofluor white stain, which binds to chitin. This organism is thus a fungus , which is a type of unicellular organism.
Fungi are heterotrophs, meaning they cannot make their own food and require organic matter for energy. Fungi are found in a variety of environments, including soil, air, water, and on the surfaces of plants and animals.
Calcofluor white stain binds to chitin, which is a major component of the cell walls of fungi, making it an ideal tool for detecting their presence. Fungi can cause a wide range of diseases in humans, from minor skin conditions to life-threatening infections.
Yeast are found in a variety of environments, including decaying organic matter, soil, and the human body. While some species of yeast are harmless, others can cause diseases in humans or other animals. Yeast infections can cause a range of symptoms, including rashes, itching, and irritation.
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What type of hormone can cross the plasma membrane to bind to a receptor in the cytosol or nucleus?
A)amine hormones
B)hydrophilic hormones
C)protein hormones
D)hydrophobic hormones
The type of hormone that can cross the plasma membrane to bind to a receptor in the cytosol or nucleus is hydrophobic hormone. The answer is B)
Hydrophobic hormones, also known as lipophilic hormones, are the type of hormones that can cross the plasma membrane to bind to a receptor in the cytosol or nucleus. These hormones are non-polar and lipid-soluble, allowing them to easily pass through the hydrophobic core of the plasma membrane.
Once inside the cell, hydrophobic hormones bind to specific receptor proteins in the cytosol or nucleus. The hormone-receptor complex then enters the nucleus and directly affects gene expression by binding to specific DNA sequences, resulting in the regulation of target gene transcription.
Examples of hydrophobic hormones include steroid hormones (such as cortisol, estrogen, and testosterone) and thyroid hormones (such as triiodothyronine and thyroxine). These hormones are synthesized from cholesterol and are characterized by their ability to freely diffuse across cell membranes and exert their effects by modulating gene expression in target cells.
In contrast, hydrophilic hormones (such as amine hormones and protein hormones) are water-soluble and cannot cross the plasma membrane. Instead, they bind to receptors on the cell surface, initiating intracellular signaling pathways through second messengers. Hence, B) is the right option.
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Which phrase correctly defines net production efficiency? The amount of energy–
A. captured from sunlight
B. available to decomposers
C. stored in roots
D. available to make new tissue tissue
The statement that describes net production efficiency from the question is The amount of energy ;A. captured from sunlight
Net production efficiency can be regarded as measure that explains the way each trophic level make use of energy and also incorporate it from their food into biomass so that another level of trophic can be fueled.Option A, which State that the energy captured from the sun is correct because it serves as the efficient and principal energy for all trophic level.
Therefore, option A is correct.
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10. Are the other phases of mitosis equal (or close)? Suggest a reason for any differences in the timing of mitosis phases.
PLZ HELP! What are some of the ways transport in plant cells is different from in animal cells?
In the endocrine system, what is the function of a negative feedback loop?
Answer:
Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances
Explanation:
siRNA and miRNA inhibit gene expression by all of the following EXCEPT: cleaving mRNA. altering chromatin DNA structure. stimulating RNA degradation. stabilizing translation machinery.
siRNA and miRNA do not inhibit gene expression by stabilizing translation machinery.
siRNA (small interfering RNA) and miRNA (microRNA) are both types of non-coding RNA molecules that play crucial roles in gene regulation by inhibiting the expression of specific genes. They achieve this inhibition through several mechanisms, but not all of them include stabilizing translation machinery.
Cleaving mRNA: siRNA can guide a protein complex called RNA-induced silencing complex (RISC) to bind to complementary mRNA sequences and cleave them, preventing their translation into proteins.
Altering chromatin DNA structure: miRNA can recruit proteins to specific genomic regions, leading to changes in chromatin structure and making the DNA less accessible for transcription, thereby inhibiting gene expression.
Stimulating RNA degradation: Both siRNA and miRNA can induce degradation of target mRNA molecules through mechanisms such as deadenylation or decapping, resulting in their rapid turnover and decreased translation.
Stabilizing translation machinery: siRNA and miRNA do not actively stabilize translation machinery. Instead, they primarily work by interfering with the translation process itself through the mechanisms mentioned above.
While siRNA and miRNA can inhibit gene expression by cleaving mRNA, altering chromatin DNA structure, and stimulating RNA degradation, they do not exert their effects by stabilizing translation machinery. Understanding these mechanisms is crucial for comprehending the intricate regulatory roles of siRNA and miRNA in gene expression control.
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What are the parts of a microscope show picture
Answer:
think it help you if it work mark as brainliest
Answer:
That's the correct answer.
a population was scored for the mn blood type locus. there were 121 type m, 327 type mn, and 262 type n individuals in the population. calculate the frequency of the m allele in this population.round your answer properly to four decimal digits.
The frequency of the m allele in the population is 0.4679.
The frequency of the m allele can be calculated by using the Hardy-Weinberg equation as follows:
p² + 2pq + q² = 1; where p is the frequency of the m allele and q is the frequency of the n allele.
From the given information, we know that:
m = 121 + 0.5(327) = 284n = 262 + 0.5(327) = 408
The total number of alleles in the population is:2(121 + 327 + 262) = 1420
Using the above equation, we can write:
284/1420 = p² + 0.5(327/1420)p² + 0.23098591 = 0.20000000 + 0.23098591p² = 0.01901409p = 0.13794034
Therefore, the frequency of the m allele in the population is:
p = 0.1379 (rounded to four decimal digits)p = 0.4679.
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If you could be any invertebrate animal in the world what would it be? And then give several reason why?
Invertebrates hence contribute to soil quality creation and maintenance in addition to aiding in the pollination of food crops. In agricultural contexts, as well as in gardens and allotments, this is crucial for growing food crops.
What function do invertebrate animals serve?The vast majority of species on Earth are invertebrates, which have an enormous variety and many of them have not yet been fully characterized. In addition to providing several environmental services, such as pollination, decomposition, and nutrient release, they are essential parts of food webs.
If invertebrates vanished, what would happen?Additionally, insects help recirculate nutrients into the soil by decomposing plant material. The majority of bird and amphibian species would become extinct in two months without any insects.
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With the help of two separate simple sketches, explain peering and transit arrangement among ISPs. 7. [Optional bonus question for extra credit] [10] Let's assume that you had little knowledge of internet cookies when you first started exploring the world wide web. You were deeply suspicious of the message "This website uses cookies." Following are some pearls of wisdom you received as a result of your inquiries: a) "Cookies do not bring destructive malware." b) "Be selective about which sites you allow to store cookies on your computer." c) "Cookies not only track your visit to the sites you visit, but they may also let third party websites show you unsolicited content." d) "Be careful about letting them remember your login information."
1) Peering and transit are two economic arrangements among ISPs.
2) Cookies are small text files that websites store on a user's computer to enhance their browsing experience.
1) Step1
Peering: This is the direct connection of two or more autonomous networks to exchange traffic. Often, neither the interconnection nor the traffic are charged for it. In order to distribute traffic to each other's customers without having to pay a third party to transfer it across the Internet for them, two Internet networks link and exchange traffic through peering.
Transit: When one autonomous network agrees to carry traffic that flows between another autonomous network and all other networks, this is referred to as transit. A network that offers transit will deliver some of the traffic indirectly via one or more other transit networks since no network links to all other networks directly.
From the above figure, you can understand that peering doesn't required any intermediate connection. It is directly connected in figure 1 and 3.
Whereas, from figure 2 and 4, you can identify that transit arrangement needs indirect connection.
2) Step: 2
Cookies:
These days, it's impossible to browse a website without seeing one of those unsettling notifications. "This site utilizes cookies," you are aware. You are prompted by a pop-up window to accept or decline cookies. The website might give you the option to accept all cookies, none at all, or only a certain category of cookies.
Cookies are brief text messages that a website you visit sends to your browser. They assist the website in remembering information about your visit, which can both make it simpler for you to return to the site and increase its usefulness to you.
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Sexual reproduction increases the genetic variation of a species because:
Answer:
Sexual reproduction increases the genetic variation of a species because it involves combining of genetic materials of two parents/individuals to form an offspring.
Explanation:
Sexual reproduction is a type of reproduction that involves formation of an offspring by combination of male and female gametes. Each gamete carries a haploid set of chromosomes. When gametes from both the parents combine, a zygote is formed which has a diploid set of chromosomes. So, sexual reproduction involves combination of genetic materials of two different individuals, hence, it leads to genetic variation.
In a population of plants used to large amounts of rain, one plant is specially adapted to survive on small amounts of water. What would happen if there was a season with little rainfall?
A. All of the population would die off and make room for a new species of plants.
B. The population would be unaffected and would survive and reproduce normally.
C. The adapted plant would survive and reproduce, and others would die causing evolution.
The adapted plant would survive and reproduce, and others would die causing evolution. thus option C is correct.
What is evolution?Even though it has resulted in their distinctions, evolution is a biological phenomenon that affects all living things. The fossil record, comparative studies of structure and function, embryological development, and studies of DNA and RNA have all provided evidence to support the hypothesis of evolution.
Plant adapted themselves according to environmental conditions. In water scarcity conditions, plant changes their leaf structures in the thorns to reduce transpiration or stem become storage organ for water.
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Scientist have discovered a new pathogen named Virus X. This infection causes its victims to suffer from severe diarrhea and is spreading quickly across major cities around the world. During their investigation, these researchers tracked the virus back to a population of pigs in Asia. These animals were not affected by the disease themselves but large numbers of the virus were found in their feces. In particular, when visiting one farm, scientists observed workers routinely going from taking care of the pigs to picking fruits and vegetables without washing their hands.
For this pathogen, the pig population would best be described as a..
vector
agent
reservoir
host
Answer:
reservoir
Explanation:
It wouldn't be agent because an agent is like viruses, bacteria, fungi, protozoa, and helminths. Most people would choose the agent because a lot of virus and bacteria is found in feces, but the question is asking for what the pig population is, not Virus X
It wouldn't be vector because a vector would be a living organism that transfers infectious agents to another living organisms like ticks and mosquitoes. The pigs are not biting and infecting anybody.
It wouldn't be host because a host is an infectious agent that is directly within an organism. And inside a host, the infectious agent would actually infect the host, but in the question it states that the pigs were not infected.
The only answer left is reservoir. And the answer is reservoir because a reservoir is where an infectious agent normally lives and reproduces, like and animal, or even soil. Because of the feces that the pig population produces, Virus X is able to live and reproduce. Exactly what a reservoir does.
Therefore, the answer to this question is the pig population would best be described as a reservoir
The reservoir is the place -animal, plant, or surface- where the microorganism can live, survive, and reproduce. In the exposed example, the pig population would be described as a reservoir.
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AgentWhen talking about agents we are referring to microorganisms that causes the disease.
Reservoir
The reservoir of microorganisms is the place where the agents live, survive, and reproduce.
It can be either an organism or an inert surface. It is the place outside the host.
They can or not be the source of transference to the host.
The reservoir is not affected by the agent.
When animals are reservoirs, the infectious diseases are called zoonosis. In general, zoonosis is transmitted from animal to animal, but human beings can be accidental hosts.
Host
The host is the plant or the animal where the microorganisms live and reproduce.
There are
final hosts → The animal or plant expresses the disease→ Adult stages of the microorganism
Intermedia hosts → The animal or plant does not express the disease→ Larvae or juvenile stages of the microorganisms
Vector
The vector is the necessary organism for the transmission of the disease.
In the exposed example, the pigs are the reservoir, because they are not affected by the disease, but viruses survive in their bodies and feces.
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Help please
Global warming is caused by an increase in the level of carbon dioxide gas in the atmosphere. How has this affected the world's oceans?
A) There is an overgrowth of algae.
B) The oceans are warming as a result of the excess carbon dioxide.
C) The oceans are absorbing the excess carbon, causing the oceans to become acidic.
D) The oceans reflect a great deal of the carbon dioxide gas back into the atmosphere.
directed evolution of an improved aminoacyl-trna synthetase for incorporation of l-3,4-dihydroxyphenylalanine (l-dopa)
Directed evolution was used to improve an aminoacyl-tRNA synthetase (ARS) for incorporating l-DOPA, a precursor to dopamine. Variants of ARS were generated, and those with enhanced activity in l-DOPA.
Incorporation were selected through multiple rounds of screening and mutation. This iterative process allowed the evolution of an ARS enzyme with improved specificity and efficiency for l-DOPA, enabling its efficient incorporation into proteins for various applications, such as protein engineering or drug delivery.Directed evolution is a laboratory technique used to enhance the properties of enzymes, such as aminoacyl-tRNA synthetases (ARS), which play a crucial role in protein synthesis. In this case, the goal was to improve an ARS specifically for the incorporation of l-3,4-dihydroxyphenylalanine (l-DOPA), a compound used in the production of dopamine.
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Animals with favorable variations reproduce more successfully than organisms with
less favorable valiations. This statement best describes the concept of
Overproduction
Use and disuse
Survival of the fittest
Inheritance
Contrary to species that follow the principle of the survival of the fittest, animals with advantageous mutations reproduce increasingly effectively. A good option is (c).
These kinds of organisms get a higher probability of surviving and reproducing if they possess offsprings?
According to Charles Darwin's theory of evolution by natural selection, animals who have inherited genetic features that allow them to adjust to their surroundings than other individuals of same species are far inclined to live, reproduce, and transmit more of their genetics onto the subsequent generation.
Populations of living things evolve and shift beyond a mechanism called natural selection. The fact that each person in a community is unique in certain aspects is referred to as natural variation. Due to this variance, some people are more likely to possess characteristics that are environment-friendly than others.
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A litter of pigs is born. Three are female and 3 are male. What is the set of symbols correctly describes the sex of each piglet
The set of symbols which correctly describes the sex of each piglet is "F" for female and "M" for male.
A piglet is a young pig, typically less than 12 weeks old. They are also known as piglings or shoats. Piglets are known for their playful and curious nature and are often raised for meat production or as pets.
They are born in litters and can have a range of coat colors and patterns, depending on their breed. Piglets are dependent on their mother's milk for the first few weeks of life and then gradually transition to solid food.
One possible way to represent the sex of each piglet is to use the symbols "F" for female and "M" for male. With this notation, we can represent the sex of each piglet in the following set:
{M, M, M, F, F, F}
This set contains three "M" symbols for the male piglets and three "F" symbols for the female piglets, in the order of their birth.
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what is the correct order of protein production?
1) ribosome
2) endoplasmic reticulum
3) secretory vesicles
4) golgy apparatus
a) 1,2,3,4
b) 2,4,3,1
c) 1,2,4,3
d) 3,2,4,1
Answer:
The correct order of protein production is:
c) 1,2,4,3
Ribosome: Protein synthesis begins in the ribosomes, which are located either in the cytoplasm or attached to the endoplasmic reticulum.
Endoplasmic Reticulum: After the initial stages of protein synthesis in the ribosomes, the newly synthesized protein is transported into the endoplasmic reticulum (ER) for further processing and modification.
Golgi Apparatus: The proteins synthesized in the ER undergo further processing and modifications in the Golgi apparatus. This includes sorting, packaging, and modifying the proteins to their final functional forms.
Secretory Vesicles: Once the proteins are properly processed and modified in the Golgi apparatus, they are packaged into secretory vesicles. These vesicles transport the proteins to their destination, such as the plasma membrane for secretion outside the cell.
Therefore, the correct order is 1, 2, 4, 3.
Answer:
The correct order of protein production is ribosome, endoplasmic reticulum, Golgi apparatus, and secretory vesicles. So the correct answer would be c) 1,2,4,3.
Many proteins destined for the endoplasmic reticulum, the Golgi apparatus, lysosomes, the plasma membrane, and secretion from the cell are synthesized on ribosomes that are bound to the membrane of the endoplasmic reticulum. The Golgi apparatus then distributes these proteins and lipids that it receives from the ER.
Proteins form channels in cell [blank]
Answer:
Cell membrane
Explanation:
Answer:
Cell membrane
Explanation:
There are two classes of membrane transport proteins carriers and channels. Both form continuous protein pathways across the lipid bilayer. Whereas transport by carriers can be either active or passive, solute flow through channel proteins is always passive.
what would be the advantage of using a molecular model that shows the compounds involved during cellular respiration to compare the amounts of carbon released into the atmosphere?(1 point)
Molecular models assist us in seeing chemical compounds that we cannot see with our open eyes.
Molecular models are three-dimensional visual representations of molecules. Molecular models allow us to see exactly what a molecule looks like. We can have a better grasp of the various transitions in a molecule by using a molecular model.
The advantage of utilising a molecular model that depicts the components involved in cellular respiration to compare the quantity of carbon released into the atmosphere is that it provides a visual of the process that is not visible to the open eye.
It aids in understanding the foundations of physical and chemical interactions, which are difficult to compute using experimental approaches. It also aids in the development of new theories, models, procedures, and products.
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Using a molecular model that shows the composites involved during cellular respiration to compare the quantum of carbon cycle released into the atmosphere allows a visual of the process that isn't visible to the mortal eye.
It helps understand the fundamentals of physical and chemical relations, which are delicate to calculate using experimental procedures. It also helps develop new propositions, models, processes, and products.
Since the carbon cycle is a global miracle, it can not be viewed at once. Using a model helps scientists and scholars understand how carbon moves through and impacts the terrain.
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what is the definition for stomach
Answer:
the internal organ in which the major part of the digestion of food occurs, being (in humans and many mammals) a pear-shaped enlargement of the alimentary canal linking the esophagus to the small intestine.
adaptions of a carp fish
5 sentences
please need help!!!
1: They prefer larger, warmer, slower-moving bodies of water with soft muddy bottoms, but they are tolerant and hardy fish that thrive in a wide variety of aquatic habitats.
2:Carp may survive in harsh conditions such as water with little oxygen or water that has large changes in temperature, even temporary freezing.
3:Common carp can be found within each of the biogeographic regions, but are only native to Europe in the Palearctic region.
4:Carp are relatively broad, heavy-bodied fish, with a serrated (or toothy) spine on their back.
5:Carp often grow 1 to 2 ft in length and weigh 1 to 8 pounds, but it is not uncommon for the common carp to reach 30-40 pounds.
PLEASE HELP!!!
"An advantage of ______ reproduction is that a genetic disorder in a parent might not affect The offspring
Answer:
An advantage of sexual reproduction is that a genetic disorder in a parent might not affect the offspring.
Explanation:
got 100
Answer:
An advantage of sexual reproduction is that a genetic disorder in a parent might not affect the offspring.
Explanation:
Since there are only two types of reproduction, sexual and asexual, andin asexual reproduction, the offspring gets all the qualities of the parent, we can determine that the offspring might not get the genetic disorder from the parent IF it is sexual. That is because there are 2 parents, hence giving a 50-50 chance to get it.
Which is an example of a recent development used to address food
shortages in urban areas?
A.
B.
C.
Answer:
A
Explanation:
can either a genotype or phenotype be expressed as a percentage?
Answer:
Phenotype
Explanation:
"only four phenotypes result from the six possible ABO genotypes. How does this happen? To understand why this occurs, first note that the A and B alleles code for proteins that exist on the surface of red blood cells; in contrast, the third allele, O, codes for no protein."
Sorry if im wrong
Most phenotypic traits—features of the organism that we can observe—are not easy to put into a Punnet Square. Give at least two reasons, or factors, that make most phenotypic traits complicated. How, then, can we measure these traits?
Most phenotypic traits are complex due to polygenic inheritance and environmental influences.
Phenotypic traits often result from the combined effects of multiple genes (polygenic inheritance) and can be influenced by environmental factors. Punnett Squares, which illustrate single gene pair inheritance, are not suitable for capturing the complexity of such traits. Additionally, environmental factors can interact with genetic factors, leading to variations in trait expression.
To measure complex phenotypic traits, alternative approaches are used. Quantitative measurements, such as height or weight, provide precise numerical values. Statistical analysis helps identify patterns, correlations, and heritability estimates in populations. It involves studying large sample sizes and employing statistical models to understand the contributions of genetic and environmental factors. Molecular genetics advancements have further enhanced our ability to study complex traits at the genetic level.
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Justifica con tus palabras la importancia de pensar y comprobar experimentalmente , tal cual lo hicieron los pensadores antiguos para crear el concepto de átomo
The early Greeks' atomic theory of matter. Democritus thought that atoms were uniform, hard, solid, incompressible, and unbreakable, and that they travelled endlessly across empty space until coming to a stop.
The various properties of matter were determined by variations in atomic size and shape. The concept that everything is made up of atoms was first proposed by the ancient Greeks. Democritus is credited with accomplishing this entirely with the power of his intellect because there were no microscopes or other scientific tools at his disposal.
The Greeks thought that atoms were the tiniest units of substance and could not be further subdivided. The English chemist John Dalton didn't begin to formulate a more precise concept of the atom until 1803. In describing atoms, he took inspiration from Ancient Greek concepts.
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Correct Question:
Justify with your words the importance of thinking and checking experimentally, just as the ancient thinkers did to create the concept of atom. ( Spanish: Justifica con tus palabras la importancia de pensar y comprobar experimentalmente , tal cual lo hicieron los pensadores antiguos para crear el concepto de átomo)
What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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