when oxygen is coupled to a hemoglobin molecule in the red blood cells it forms a molecule called oxyhemoglobin.
With oxygen, hemoglobin creates an erratic, reversible connection. It is known as oxyhemoglobin and is brilliant red when it is oxygenated. When it is diminished, it is purplish blue. Red blood cell precursor cells in the bone marrow produce haemoglobin.Hemoglobin transports oxygen to the tissues in this manner. It's interesting to note that the haemoglobin molecule turns brilliant red due to the iron-oxygen connection. The molecule is a darker crimson in the absence of oxygen. Because of this, venous blood (which is oxygen-poor) appears darker, almost purple, but arterial blood (which is oxygen-rich) is brilliant red.
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Which of the following hormones directly stimulates growth of muscle tissue, leading to increased muscle mass? A) epinephrine B) thyroid hormone C) testosterone D) parathyroid hormone E) calcitonin
The thyroid hormone, a hormone, regulates your body's metabolism—the process throughout which food is metabolized into energy. Thyroid hormone is mainly composed of the 2 key hormones your thyroid secretes, triiodothyronine (T3) and thyroxine (T4).
The thyroid gland produces three hormones: T3 is a hormone also known as triiodothyronine. Tetraiodothyronine, also called T4 or thyroxine or calcitonin, is a hormone.
The pituitary, an endocrine gland located at the base of the brain, controls your thyroid and other endocrine organs. Thyroid stimulating hormone, which is produced by the pituitary and affects the thyroid (TSH). TSH causes your thyroid cells to generate more T3 and T4 hormone.
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Please help!!!
I’ll give you the Brainiest
If a person were born with only green and blue cone cells, which color would the
person have trouble seeing? How might this condition affect the person?
If a person only has blue and green cone cells, he/she has red colorblindness, or the inability to see red as well as other color spectra of red such as orange.
What do you mean by colorblindness?Color blindness occurs when you are unable to see colors in a normal way. It is also known as color deficiency. Color blindness often happens when someone cannot distinguish between certain colors. This usually happens between greens and reds, and occasionally blues.
If you have color blindness, it means you see colors differently than most people. Most of the time, color blindness makes it hard to tell the difference between certain colors. Usually, color blindness runs in families. There's no cure, but special glasses and contact lenses can help.
The most common kinds of color blindness are genetic, meaning they're passed down from parents. If your color blindness is genetic, your color vision will not get any better or worse over time.
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why was counting the number of bubbles an appropriate way to measure the rate of cellular respiration occurring within the yeast?
Both aerobic and anaerobic activities result in the production of carbon dioxide. Given that yeast only emits CO2 during fermentation , it is safe to assume that cellular respiration was occurring in yeast.
Even in the presence of oxygen, yeast generally exhibits a wide range of metabolic preferences with regard to its mode of respiration (aerobic or anaerobic). Particularly Saccharomyces yeast has been seen to engage fermentative respiration(fermentation ) to variable degrees even in aerobic settings.
Cellular respiration and fermentation are also processes that yeast, a tiny unicellular fungus, is capable of. When yeast cells are maintained in an environment that is anaerobic (i.e., devoid of oxygen), they begin to ferment alcohol in order to produce useful energy from food.
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What do these structures indicate about the evolution of three organisms?.
These structures indicate about the evolution of three organisms, they share a common ancestor.
An organism is any biological, living system that works as a separate entity. The term "organism" originates from the Ancient Greek words "v" (órganon), which means "instrument, implement, tool," and "-ismós," which means "-ism." Cells make up every living thing (cell theory). According to taxonomy, organisms can be categorized as either unicellular microorganisms like protists, bacteria, and archaea, or multicellular animals, plants, and fungi All different kinds of creatures have some degree of stimulus response, the ability to reproduce, grow, and develop. Multicellular organisms that distinguish specialized tissues and organs throughout development include vascular plants, squids, tetrapods, mushrooms, and beetles. Eukaryotic or prokaryotic cells can make up a single-celled creature. Both bacteria and archaea are distinct domains that belong to prokaryotes. A membrane-bound cell nucleus and additional membrane-bound compartments known as organelles (such as mitochondria in animals and plants and plastids in plants and algae) are features that distinguish eukaryotic creatures from other types of life.
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What is A strand of RNA called?.
Answer: mRNA
Explanation:
What is true about a mineral with a hardness of 5 on the Mohs Hardness Scale?
Question 19 options:
A.) it can be scratched by an iron nail, but not by glass
B.) it can be scratched by glass, but not by an iron nail
C.) it can't be scratched by anything
Mineral with the hardness of 5 on the Mohs Hardness Scale it can be then scratched by the iron nail, but not by glass
Diamond is the hardest mineral, so it is always at the top of the scale. His 10 minerals are Mohsscale, talc, gypsum, calcite, fluorite, apatite, feldspar, quartz, topaz, corundum and finally the hardest diamond. The Mohs hardness scale is used as a convenient method of identifying minerals. Mineral hardness is a measure of relative scratch resistance, measured by scratching a mineral against another substance of known hardness on the Mohs scale. Minerals are the naturally occurring the inorganic elements or the compounds with the ordered internal structures and the characteristic chemical compositions, the crystal forms, and the physical properties. Common then minerals include the quartz, feldspar, mica, the amphibole, olivine, and calcite.
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Environmental conditions and the presence of ______ help a cell in the G1 phase to accumulate changes that might cause it to progress through the rest of the cell cycle.
signaling molecules
A cell in the G1 phase can collect modifications that could allow it to advance through the rest of the cell cycle with the aid of environmental factors and the presence of signaling molecules.
What takes place in the cell cycle's G1 phase?The majority of cellular development occurs in G1; cells increase in size and produce the proteins and organelles necessary for DNA synthesis.Here, along with proteins and RNAs, the centromere and other centrosome components are created in particular.
What is required for the cell cycle to transition from the G1 phase to the S phase?Growth-dependent cyclin-dependent kinase (CDK) activity encourages DNA replication and starts the transition from G1 to S phase during G1 phase. When CDK is activated, a positive feedback loop starts.
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Why is it accurate to claim that the legume-bacteria mutualism described in the text is contingent?.
As a result of this symbiosis, nodules develop on the roots of the plant, where the bacteria can transform atmospheric nitrogen into ammonia that the plant can use.
What exactly are legume-bacteria?Rhizobia, a type of nitrogen-fixing soil bacterium symbiotically with legumes. The final result of this symbiosis is the development of nodules on the roots of the plants, where the bacteria can convert atmospheric nitrogen into ammonia that the plants may utilise.
Why do bacteria benefit legumes?Leguminous plants that are colonized by these bacteria develop a series of new organs termed "nodules" on their roots as a result. In such nodules, bacteria fix nitrogen and transform it into ammonia, a substance essential for plant growth .
What are legumes and rhizobium?Rhizobia are soil microorganisms that can work with legume plants to produce root nodules that are favorable to bacterial nitrogen fixation.. Legumes enable the growth of extremely large Rhizobial populations close to their roots.
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the condition in which pathogens enter, establish, and multiply in the human host is referred to as a(n) .
Infection is the condition in which pathogens enter, establish, and multiply in the human host.
The attack and duplication of microorganisms to a degree microorganisms, viruses, and parasites that are not usually present inside the crowd. An infection can cause no syndromes and be subclinical, or it may cause syndromes and be clinically obvious. Infection Prevention and Control is the principal in feeding, it protects two together patients and a healthcare trader from affliction.
Without controlling the spread of Infection, nursing homes would enhance danger in consideration of visits that would design huge healthcare questions across the organization. A pathogen in the most aged and fullest sense is some organism or power that can produce ailment. A pathogen concedes the possibility again to be referred to as a spreading agent, or plainly a beginning. The term bacterium happened into use in the 1880s.
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chloroplasts: chloroplasts: play a vital role in cellular respiration. play a central role in glucose production. produce atp for the cell. are present in all eukaryotes. are the major site of protein synthesis in the cell.
chloroplasts play a central role in glucose production. During the process of photosynthesis in the presence of sunlight plants produces sugar
Chloroplasts are chlorophyll-containing organelles found within plant cells; they are necessary for Earth life since photosynthesis occurs in chloroplasts. Chloroplasts are plant cell organelles which use photosynthesis energies to transform energy from the sun into relatively stable chemical energy. They support life on the planet by doing so. Chloroplast functions include light energy absorption and conversion into biological energy, the production of NAPDH2 and the evolution of oxygen via the process of photolysis of water, and the production of ATP via photophosphorylation.
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Which of these DNA polymerases have been assigned the major role of nucleotide incorporation during replication?
A) DNA polymerase II
B) DNA polymerase III
C) DNA polymerase IV
D) DNA polymerase V
B
The DNA polymerases which are assigned the major role of nucleotide incorporation during replication is DNA polymerase III, which means that option B is the right answer.
DNA Polymerase III is the enzyme primarily responsible for synthesis of DNA. It connects to a new nucleotide fragment with nitrogenous bases and thus assembles a new DNA over the existing one. DNA Replication is the process by which a single molecule of DNA is used to produce 2 identical copies of the same DNA molecule. Firstly, the double helix structure splits into two and then the template DNA strands formed by RNA are merged and assembled together to give rise to new DNA strands.
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The hiv virus attacks only a certain type of white blood cells, and not other cell types. Why?.
the hiv virus does attack othernorgans n cells n the body especially the arteries and the heart
if cytosine makes up 40% of the nucleotides in a sample of dna from an organism. what percentage of the nucleotides in this sample will by thymine?
In a sample of DNA, thymine will make up 10% of the total.
DNA structure:
According to Chargaff, nucleotide subunits make up the DNA. The double-stranded DNA molecule is created by these nucleotides forming hydrogen bonds with one another.
The following nucleotides can be found in the DNA molecule:
AdenineGuanineThymineCytosineWhile Guanine (G) couples with Cytosine (C), Adenine (A) pairs with Thymine (T).
According to Chargaff's rule, the ratio of adenine to thymine in a DNA molecule is equal. The same holds true for cytosine and guanine. The entire number of nucleotides, however, is 1, or 100%.
A + T + G + C = 100%.
if cytosine makes up 40% of the DNA sample, this means that guanine will also be 40%.
G (40) + C (40) = 80%
100% - 80% =20%
This means that Adenine and Thymine amounts to 20%. The amount of each nucleotide will be 20% ÷ 2 = 10% i.e. A = T = 10%
Therefore, the percentage of thymine in a sample of the DNA will be 10%.
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categorize the conditions listed as shifting the oxyhemoglobin dissociation curve to the le ft or right.
The oxygen dissociation curve can be shifted right or left by a variety of factors.
Under what conditions oxyhemoglobin dissociation curve shifts to the right?The oxyhemoglobin curve is shifted to the right when there is high PCO2, low PO2, high H+ concentration (low pH) and high temperature increased concentration of BPG in red blood cells favor's formation of the T (taut or tense), low-affinity state of hemoglobin and so the oxygen-binding curve will shift to the right.
What causes right and left shift in oxyhemoglobin dissociation curve?Oxygen unloading is favored at higher temperatures which will cause a rightward shift. On the other hand, lower temperatures will cause a leftward shift in the dissociation curve.
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There are three major checkpoints that regulate progress of the cell cycle. Which of the following would not be one of the valid checkpoints during the cell cycle?
at the juncture of G1 to G2
This is not a valid checkpoint. DNA synthesis occurs between the two checkpoints, so this is missing a major step during interphase.
At the juncture of G1 to G2. Even within a single organism's cells, the length of the cell cycle varies greatly. The amount of time a cell spends in each stage of the cell cycle varies as well.
Cell turnover in humans varies from a few hours during early embryonic development to an average of two to five days for epithelial cells and up to a full human lifetime for specialized cells like cortical neurons or cardiac muscle cells, which spend their entire existence in the G0 state. The cycle lasts roughly 24 hours when fast-diverging mammalian cells are cultured in culture (outside the body under ideal growing circumstances). The G1 phase lasts roughly nine hours, the S phase lasts ten hours, the G2 phase lasts roughly four and a half hours, and the M phase lasts roughly one and a half hours in rapidly dividing human cells with a 24-hour cell cycle. The cell cycle is finished in around eight minutes in fruit fly embryos. Events in the cell cycle are timed according to both internal and exterior to the cell mechanisms.
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an operon is a group of genes under the control of a single promoter. match each type of operon with the descriptions.
Under default conditions, transcription is inhibited.
Transcription stops when the repressor gene product is activated.
Transcription occurs regardless of environmental conditions
Sufficient amounts of the gene product inhibit further transcription.
Inducible
Repressible
Constitutive
The type of operon with the descriptions are given below:
Repressible operon - Under default conditions, transcription is inhibited.Inducible operon - Transcription stops when the repressor gene product is activated.Constitutive operon - Transcription occurs regardless of environmental conditions. Sufficient amounts of the gene product inhibit further transcription.What is an operon?An operon is a group of genes that are present in a given region of DNA and which are under the control of a single promoter.
Operons are commonly found in bacteria as they enable the bacteria to produce several gene products during a single transcription process.
Alternative splicing of the genes in an operon results in the formation of multiple mRNA transcripts used to synthesize proteins.
There are several forms of operons in living organisms, and they include:
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The area under the nail plate typically has a ____ appearance in the area that extends from the lunula to the area just before the free edge of the nail.A. pinkishB. whitishC. bluishD. grayish
From the lunula to the region right before the free edge of the nail, the area under the Nail plate often appears pale bluish.
What is the name of the area beneath the nail?The matrix is the name given to this region. A luminous, half-moon-shaped spot can be seen at the base of a nail when you gaze at it, shining through the nail plate. The matrix's viewable portion is this. Due to its shape, it is known as the lunula (Latin for "little moon").
What portion of the nail plate protrudes past the nail bed?The nail plate turns into the free edge when it surpasses the hyponychium. It's crucial to have a free edge since it makes sure the entire nail bed is protected and coated. The cuticle is a strip of dried, hardened skin that is located at the base of a nail, above the eponychium.
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When a steroid hormone binds to an intracellular receptor, what happens after the receptor changes shape?.
When the steroid hormone binds to an intracellular receptor, the receptor shape changes and that leads to activation of the process of transcription.
Steroid hormones are responsible for regulating cellular processes and they do this by binding to intracellular receptors. These intracellular receptors interact with the nucleotide sequences to alter gene expression.
Most steroid receptors target cells are located in the cytoplasm, they get to the nucleus to regulate the gene expression. Here, the steroid hormone comes into play. It crosses the membrane of the target cell to enter into the cytoplasm where it binds to a specific receptor made of protein.
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Is ATP an organelle?.
ATP, the energy currency of the cell, is made in an organelle called the "mitochondrial.
Mitochondria are tiny organelles of inner cells which are involved in releasing strength from meals. This procedure is called cellular breathing. it is because of this that mitochondria are frequently known as the powerhouses of the cell.
All living cells contain ribosomes, tiny organelles composed of approximately 60 percent ribosomal RNA (rRNA) and forty percent protein. however, though they're commonly described as organelles, it is important to word that ribosomes are not bound by using a membrane and are plenty smaller than other organelles.
The non-membrane certain organelles, additionally known as large biomolecular complexes, are massive assemblies of macromolecules that carry out unique and specialized functions, however, they lack membrane obstacles. lots of these are referred to as "proteinaceous organelles" as their foremost shape is manufactured from proteins.
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What are the 3 types of drinks?.
The 3 types of drinks are
WineSpiritsBeerWith origins between 7000 and 6600 BCE, wine is regarded as the world's most ancient alcoholic beverage. Crushed grapes are fermented with yeast to make wine. Grape sugars are transformed by the yeast into ethanol, which is then stored to be aged and bottled.
One of the most consumed alcoholic beverages worldwide is regarded as beer. Brewing, the process of creating beer, typically involves fermenting barley or other cereal grains like wheat, rye, oats, rice, corn, or sorghum. Beer has an ABV that can range from 2.5% to 15%, however a typical drink typically has a 4% to 6% ABV.
Hence, wine, beer and spirit are popular drinks.
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What are some strategies one may use to reduce exposure to pesticides?.
A few techniques one can also use to reduce publicity to pesticides are: Trimming fat from meat and skin from chicken and fish due to the fact some pesticide residues collect in fats. selecting a ramification OF ingredients: eat a diffusion of meals, from a variety of assets.
This may provide you with a higher mix of nutrients and decrease your likelihood of publicity to an unmarried pesticide.
Pesticides can purpose short-time periods of adverse health consequences, known as acute outcomes, as well as chronic negative results that can arise months or years after exposure. A pesticide is any substance used to kill, repel, or control sure forms of plant or animal life that are considered to be pests.
Examples of unique artificial chemical insecticides are glyphosate, Acephate, Deet, Propoxur, Metaldehyde, Boric Acid, Diazinon, Dursban, DDT, Malathion, and many others.
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. the blank tissue system is the tissue system that forms a layer of outer protection for the plant (analogous to human skin).target 1 of 8 2. the blank tissue system is the tissue system that forms a long-distance transportation system for the plant (analagous to the human circulatory system).
The tissue system that forms a layer of external protection for the plant is called the dermal tissue system (analogous to human skin).
The tissue system that serves as the plant's long-distance transportation system is called the vascular tissue system (analagous to the human circulatory system).
Is the tissue system that gives the plant its outer layer of defense?The outer, protective layer of the main plant body is the dermal tissue system, also known as the epidermis (the roots, stems, leaves, flowers, fruits, and seeds). The epidermis typically has one cell layer and no chloroplasts in its cells.
Plants have a vast network of xylem and phloem-based conduits. This more closely resembles the circulatory system that carries blood throughout the body of a human. The xylem and phloem tissues are distributed throughout the plant, much like the circulatory system in humans.
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genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment. an example would be moths of the same species with different color wings. moths with wings similar to the color of tree bark are better able to camouflage themselves than moths of a different color. as a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes. this process is called natural selection, and it is the main force that drives evolution.
Genetic Diversity, Genetic variation is the existence of distinct gene sequences among various members of a species. Natural selection, one of the main factors guiding the evolution of life, is made possible by it.
Geographic variation refers to genetic variations among populations from various regions. Genetic drift or natural selection are to blame for this. The percentage of polymorphic gene loci or the proportion of heterozygous people at a given gene locus are two typical ways to quantify genetic diversity within a population.
Genetic diversity in populations is maintained by a number of factors. In populations of diploid organisms, potentially detrimental recessive alleles can be protected from selection by heterozygous individuals (recessive alleles are only expressed in the less common homozygous individuals).
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How many o2 molecules are there?.
One molecule of O2 molecule is having a mass of 32 g contains the 6.022 X 10 raise to the power of 23 molecules of oxygen. Each atom has two molecules of oxygen.
What is the atomic number of oxygen ?
The atomic number of oxygen is 16.
In each of O2 molecule there is a presence of 2 oxygen atoms that is equivalent to the Avogadro number that is equal to the number mentioned above where the molecules is the total number of molecules that are present in the molecule.
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2. what is the normal role of cholesterol in the body? do you need cholesterol? (hint: remember cell membranes.)
a savanna is a tropical grassland with scattered drought-tolerant trees. group of answer choices true false
A savanna being a tropical grassland with scattered drought-tolerant trees is referred to as a true statement.
What is a Savanna?This is referred to as a mixed woodland-grassland ecosystem and it is characterized by the scattering of different types of trees in the area.
It also contains a tropical grassland with scattered drought-tolerant trees which makes it maximize its water usage in other to perform different types of activities and ensured its survival as a result of the area having a low amount of precipitation which is therefore the reason why true was chosen as the correct choice in this scenario.
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n fish gills, water moves in one direction past thin, membranous plates known as . multiple choice question.
In fish gills, water moves in one direction past thin, membranous plates known as lamellae
In fish gills, water moves in one direction past thin, membranous plates known as: D. lamellae.
What is an amphibian?An amphibian can be defined as living organisms (animals) that can survive and live both on land and inside the water. Therefore, amphibians can walk on land and they also have limbs to swim, but they do not have gills like fishes in order to enable them breath in water.
This ultimately implies that, amphibians can only breath in air directly through the use of their lungs. Furthermore, a lamella simply refers to a thin layer, membranous plate (plate of tissue) which allows water to move unidirectionally (one direction) within the gills of fishes.
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Complete Question:
In fish gills, water moves in one direction past thin, membranous plates known as ______.
trachea
branchial
spiracles
lamellae
Which atom attains a stable valence electron configuration by bonding with another atom?.
Hydrogen atom attains a stable valence electron configuration by bonding with another atom.
Hydrogen atom is chemically stable as they share an electron with another hydrogen atom. When Combined with a hydrogen molecule consisting of two atoms with one oxygen atom they make a compound known as water.
They are capable of achieving a stable configuration by filling up the outer shell by donating or sharing one electron with another atom or a molecule such as water. Hydrogen atoms combined together to form a covalent bond because they share their electrons equally to form a hydrogen molecule.
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Explain how precipitation affects the phosphorus cycle
When precipitation increases that increases erosion and will also increase the transport of phosphorous and other nutrients into soils, environments, and fresh water. Habitat loss and erosion can reduce the nutrient in soils.
Phagocytosis eliminates pathogens that have evaded the first line of defense. The process can be broken down into six main steps. Enhancing any of those steps could lead to more efficient bacterial elimination during infection.Arrange the following steps in order to describe the chronological order of the events in phagocytosis. chemotaxis, adherence, ingestion, maturation, killing, elimination
Arranging these 6 steps in order to describe the chronological order of the events in phagocytosis- Chemotaxis, adherence, ingestion, maturation, killing and elimination.
Phagocytosis eliminates pathogens that have evaded Maturation,the first line of defense in our immune system.
The process can be simplified into six main steps. Enhancing any of those steps could lead to killing more efficient bacterial elimination during infection. Arranging these 6 steps in order to describe the chronological order of the events in phagocytosis-
1) Chemotaxis - In this process phagocyte is attracted or called towards infection .
2) Adherence- means phagocyte attaches to microbe.
3) Ingestion- microbe is engulfed by phagocyte.
4) Maturation- “matures” through a series of increasingly acidified membrane-bound structures called phagosomes and formation of phagolysosome occur.
5) Killing- digestive chemicals like toxic oxygen compounds and H+ ions creating harsh pH, kill the microbe.
6) Elimination- phagocyte is excretes microbes remnants.
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