viridans streptococci are found in the and cause . skin, boils mouth, dental caries (tooth decay) gi tract, traveler’s diarrhea upper respiratory tract, strep throat
Answers
Viridans streptococci are found in the mouth and cause dental caries (tooth decay). They are a group of bacteria commonly found in the oral cavity, including on the surface of teeth.
The presence of these bacteria, combined with factors such as poor oral hygiene and a diet high in sugars, can lead to the formation of dental plaque and subsequent tooth decay. Viridans streptococci are part of the normal oral microbiota and are typically harmless. However, under certain conditions, they can cause dental caries by metabolizing sugars and producing acids that demineralize the tooth enamel. Over time, this can lead to the formation of cavities. Regular dental hygiene practices, such as brushing and flossing, are important in preventing the overgrowth of viridans streptococci and reducing the risk of dental caries. Additionally, maintaining a balanced diet and limiting sugary food and drinks can help protect against tooth decay caused by these bacteria.
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Related Questions
On the ear, which nerve carries electrical signals to the brain?
Answers
The nerve responsible for carrying electrical signals from the ear to the brain is called the auditory nerve. It is also known as the cochlear nerve, as it is connected to the cochlea - a spiral-shaped structure located within the inner ear.
The auditory nerve is a crucial component of the auditory system, which allows us to process sound and interpret it as speech, music, or other sounds. When sound waves enter the ear, they travel through the ear canal and reach the eardrum, which vibrates in response to the sound. These vibrations are then transmitted through three tiny bones in the middle ear, known as the ossicles, and into the inner ear. Here, the vibrations are converted into electrical signals by hair cells in the cochlea. These electrical signals are then transmitted by the auditory nerve to the brainstem, where they are further processed and interpreted as sound. In summary, the auditory nerve is responsible for carrying electrical signals from the ear to the brain, allowing us to hear and interpret sounds in our environment.
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How is phosphorus processed by the wetland?
I
Answers
Explanation:
Phosphorus, organic nitrogen and some metals ( iron or aluminium) usually attached to sediment and are carried by runoff to wet land. By holding water, a wetland allows sediment and large particles ti settle on the wetland bottom. The root systems of wetland plants then absorb nutrients from the sediment.
Which of the following statements about the cells of any multicellular organism is true?
Different genes are expressed in different types of cells; each cell has completely different dna the same genes are expressed in each cell almost all cells have the exact same dna
Answers
The statements about the cells of multicellular organisms that are true is as follows:
Different genes are expressed in different types of cells;Almost all cells have the exact same dna. That is option A and D.What are multicellular organisms?Multicellular organisms are those organisms to that are made up of more than one cell which is different from unicellular organisms that are made up of one cell.
The various cells that make up the multicellular organisms contain nucleus which houses the genetic markers of the organism known as deoxyribonucleic acid (DNA).
All the cells has the same deoxyribonucleic acid which is inherited from parents cell but they are expressed is different ways giving rise to distinct organs and organ systems.
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Two biological processes that occur in certain organelles are represented in the diagrams below.
**Which statement is correct regarding the types of organisms able to carry out these processes?
a. Process X occurs in heterotrophs, but not in autotrophs.
b. Process Y occurs in consumers, but not in producers.
c. Both processes X and Y occur in all living things.
d. Both processes X and Y occur in green plants.
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Answer:
A
Algebra For what values of the variables must ABCD be a parallelogram?
B
23. A 2y + 2 B 24. B
(3x + 10)
(8x + 5)º
3x + 6
54°
D
С
D
A
Зу - 9 с
ly+4
Answer: The answer is D :)
Explanation:
During translation, what does the tRNA deliver to the ribosomes?
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Answer: amino acids
Explanation:
James adds some magnetic marbles to a glass jar full of ordinary marbles, and then shakes up the jar. What do you think will happen to the magnetic marbles?
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The magnetic marbles will attract to each other despite being mixed in with the ordinary marbles. The chance they will touch depends on how many marbles are in the jar and how many magnetic marbles were put in.
Rachel wants to test how sunlight impacts plant growth over time she will add billing amount of light to different sets of plans what is the independent variable
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Answer: sunlight.
Explanation: When trying to establish the level or extent of correlation or relationship which exists between two variables, the variables are classed as independent and dependent variables. The independent variable is referred to as the variable which causes a change in the value of the other variable (dependent variable). It is also known as the explanatory or predictor variable as it lead to changes in the dependent or predicted variable. In the scenario above, the independent variable is sunlight whose impact leads to changes in the growth level of the plant.
Write about the sand grouse ands it’s adaptation to the environment. Just be 5-7 sentences long. Please help me
Answers
Answer:
Sandgrouse is the common name for Pteroclidae, a family of sixteen species of birds, members of the order Pterocliformes. They are traditionally placed in two genera. The two central Asian species are classified as Syrhaptes. How the sand grouse adapt to environment. The dense layer of under down which helps insulate the bird from extremes of heat and cold. The feathers of the belly are specially adapted for absorbing water and retaining it. Allowing adults particularly males to carry water to chicks that may be many miles away from watering holes.
Explanation:
Which of the following is not true about meiosis?
A. Requires a male and a female to reproduce
B. More complex than mitosis
C. Muscle cells reproduce in this way
D. Final cells have half of the DNA
Answers
Answer:
Require a male and a female to reproduce
Explanation:
Gametes are produced by mitosis (not meiosis) and after fertilization a diploid zygote is created. ... It can only divide by meiosis to produce haploid cells once more, which then produce the main adult body. In plants and some algae, there is a multicellular diploid and a multicellular haploid period of the life cycle.
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The barrier islands of Georgia are low, sandy islands that form off the coastline and protect the mainland; however, they can be a risky place to reside or develop.
If a builder wanted to construct a mall on one of these islands, which of the following questions would be the most significant concern for him to consider?
A.
Where would be the best place to build the mall so that it is protected from the impact of storms which causes the winds and waves to constantly redistribute the sand?
B.
Since the islands are constantly changing, what location would offer the best access to sand resources to aid in the construction of the mall?
C.
Before construction begins, should large amounts of sand be removed from the island first in order to prevent erosion of the beach?
D.
If an earthquake were to occur, would the islands sink below sea level, causing a huge tidal wave to crash on the mainland?
Answers
Answer:
I don't know I'm stupid
Explanation:
I hate school but can I be the BRAINLIEST
after inoculating your blood agar plate you place it in the incubator. upon taking the plate out of the incubator you observe your bacteria has grown and the back of the plate turned your plate a dark brownish green color. you conclude the hemolytic activity of this organism to be
Answers
Based on the observation of the dark brownish green color on the back of the blood agar plate after incubation, along with bacterial growth, the hemolytic activity of the organism can be inferred to be alpha-hemolytic.
Alpha-hemolysis is a type of hemolytic activity exhibited by certain bacteria where partial destruction of red blood cells occurs. It is characterized by a greenish discoloration of the agar surrounding the bacterial colonies. The green color is the result of the breakdown of hemoglobin in the red blood cells by the bacteria, leading to the release of iron-containing compounds.
In alpha-hemolysis, the bacterial colonies create a zone of incomplete hemolysis around them. This means that the red blood cells are only partially lysed, resulting in a greenish discoloration rather than complete clearing of the agar.
The dark brownish green color observed on the back of the blood agar plate is likely due to the accumulation of the breakdown products of hemoglobin produced by the alpha-hemolytic bacteria.
Therefore, based on these observations, it can be concluded that the hemolytic activity of the organism in question is alpha-hemolytic.
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What are 3 environmental factors in the natural reserve that affect which mice in a population survive to produce. And do these factors affect the genotype or the phenotype of the mice populations or both?
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Would individuals who are heterozygous for the sickle cell allele be selected for or against in a region free of malaria
Answers
Answer:
there would be selected for in a region free of malaria.
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What are the three stop codons? What is the start codon?
Answers
Answer:
UGA, UAA, and UAG
Explanation:
Each three-letter sequence of mRNA nucleotides corresponds to a specific amino acid, or to a stop codon. UGA, UAA, and UAG are stop codons
Answer:not sure
Explanation:
Not sure
What are cells made of?
Answers
Answer:
All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.
It includes features from all cell types. A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.
Explanation:
put in your own words
Cells are made up of macromolecules like proteins, carbohydrates, lipids, and nucleic acids.
What are cells?The cell is the smallest unit of life. They make the living being's structure and all the functions are performed by cells. It is the smallest unit of living matter and is made of proteins, lipids, and nucleic acids.
The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell. The substances that enter and leave the cell are governed by the cell membrane, which encloses the cell.
The majority of the cell's DNA is located in the nucleus, a structure inside the cell that houses the nucleolus. The majority of RNA is also produced there.
Thus, macromolecules like proteins, carbohydrates, lipids, and nucleic acids make up cells.
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Why is calcium carbonate important to mollusks?
Answers
Answer:
Calcium carbonate is important to mollusks because they use it to produce their shells.
Explanation:
:)
Choose the layers that are permeable and impermeable ?
1. layer of loose soil
2. layer of sand
3. layer of gravel
4. layer of hard clay
5. solid rock
Answers
Interestingly, the gene AR that encodes an androgen receptor (that is required for cells and tissues to respond to androgen hormones), is located on the X chromosome. A recessive nonsense mutation in this gene leads to complete androgen insensitivity syndrome, which means that the body cannot use androgens at all. If a XY individual is born and they inherit the nonsense mutation form of AR, (assume a functional copy of SRY on their Y) with regard to sexual determination, should this individual develop with more female or male phenotypic characteristics? Why?
Answers
If an XY individual carries a functional SRY gene, the absence of functional androgen receptors would prevent the normal actions of testosterone and other androgens in the body.
If an XY individual is born and they inherit the nonsense mutation form of AR, with regard to sexual determination, this individual should develop with more female phenotypic characteristics. This is due to the fact that, during embryonic development, a functional SRY gene on the Y chromosome normally encodes the testis-determining factor (TDF), which then initiates testicular differentiation through the production of anti-Mullerian hormone (AMH) and testosterone, according to the scheme outlined by the concept of sex determination by genes.
Testosterone, as an androgen hormone, is required to promote the development of male reproductive organs and male secondary sexual characteristics. It acts by binding to androgen receptors (ARs) found in different tissues and organs throughout the body, such as the testes, prostate gland, and skin. The gene AR, which encodes for the androgen receptor protein, is found on the X chromosome, and a nonsense mutation in this gene can cause complete androgen insensitivity syndrome (CAIS), which means that the body is unable to use androgens at all.
Therefore, even if an XY individual carries a functional SRY gene, the absence of functional androgen receptors would prevent the normal actions of testosterone and other androgens in the body.
As a result, such individuals would develop with a female-like appearance due to the lack of androgen action, and would typically be diagnosed with CAIS.
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bacteria as a group are incredibly metabolically diverse, but individual species are often highly specialized to reduce competition in their natural environment. this results in these species being unculturable becausechoose one:a. they cannot tolerate oxygen.b. components in laboratory media are toxic to them.c. their growth may depend on necessary growth factors provided by other organisms in their natural environment.d. trace elements in the water used in the laboratory prevent their growth.
Answers
This results in these species being unculturable because their growth may depend on necessary growth factors provided by other organisms in their natural environment.
Certain bacterial species have specific requirements for growth that are not easily replicated in laboratory conditions. These bacteria may rely on the presence of other organisms in their natural environment to provide essential growth factors or nutrients. These growth factors could include specific compounds, co-factors, or signaling molecules that are produced by other organisms in their ecological niche. Without the presence of these necessary factors, the bacteria may fail to grow or reproduce in laboratory media, making them difficult to culture.
This specialization and dependence on other organisms create challenges in isolating and cultivating these bacteria in a laboratory setting. Researchers often need to replicate the complex interactions and conditions found in the natural environment of these unculturable bacteria to successfully culture them. This can involve using specialized growth media, co-culturing techniques, or even mimicking specific ecological niches to provide the necessary growth factors and conditions for their cultivation.
It's important to note that while options a, b, and d may be factors that affect the growth of certain bacterial species, the most accurate answer in this context is option c, as it specifically addresses the dependence of unculturable bacteria on necessary growth factors provided by other organisms in their natural environment.
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The element phosphorus reacts with oxygen to produce a bright flame. which is the smallest particle that will also react with oxygen to produce a bright flame?
Answers
The smallest particle that will react with oxygen to produce a bright flame is the phosphorus atom.
What is the smallest particle?
Phosphorus exists in molecules in its elemental state. These molecules are made up of four phosphorus atoms bonded together in a tetrahedral configuration. However, each phosphorus atom in the molecule interacts with two oxygen molecules to generate phosphorus pentoxide when phosphorus and oxygen interact chemically.
Each phosphorus atom in the molecule combines separately with oxygen in this process to create a brilliant blaze. Therefore, the smallest particle that can interact with oxygen to produce the intense flame observed is an individual phosphorus atom at the atomic level.
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State two ways in which the adult housefly differs in structure from an adult fluke or an adult hookworm
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Unlike flukes and tapeworms, which are parasitic and must locate and attach to a host in order to survive, planarians are free-living, non-parasitic flatworms.
The parasitic flatworms adhere to their hosts using and hooks. A scolex is the term for the tapeworm's ring-shaped hooks.
What signs of hook worm do adults exhibit?The initial symptoms of an infection are frequently itching and a localised rash. As the larvae pierce the skin, these symptoms appear.
A person with a minor illness could not exhibit any symptoms.
Abdominal discomfort, diarrhoea, appetite loss, weight loss, exhaustion, and anaemia may be experienced by someone who has a severe infection.
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for applications in gene therapy, what is the most favorable characteristic of retroviruses? for applications in gene therapy, what is the most favorable characteristic of retroviruses? dna copies of retroviral genomes become integrated into the genome of the infected cell. retroviruses have an rna genome. retroviruses mutate often. retroviruses possess reverse transcriptase.
Answers
The most favorable characteristic of retroviruses for applications in gene therapy is that their DNA copies become integrated into the genome of the infected cell, allowing for stable and long-term expression of the therapeutic gene.
Additionally, retroviruses possess reverse transcriptase, which enables them to convert their RNA genome into DNA, a crucial step in the integration process. While retroviruses do have the potential to mutate often, this characteristic can be controlled through careful selection and engineering of the viral vector used in gene therapy.
The most favorable characteristic of retroviruses for applications in gene therapy is that DNA copies of retroviral genomes become integrated into the genome of the infected cell. This feature, along with the presence of reverse transcriptase, allows for stable and long-term expression of the therapeutic gene, making retroviruses an attractive choice for gene therapy applications.
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Which number label represents cellular respiration occurs and ATP is produced? 1 2 3 6
Answers
Structure 3 in the diagram represents where cellular respiration occurs and
ATP is produced.
The structure is known as the mitochondrion and it has an oval shape in
which series of reactions takes place to produce energy needed by the cells
of organisms.
The mitochondrion is regarded as the power house of the cell because
cellular respiration takes place which produces ATP. The ATP formed is the
usable form of energy by cells to preform their daily activities and for
optimal functioning.
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Answer:
No 3 The mitocondrion
Explanation:
A. Glucose is a common sugar in the bloodstream of humans. The chemical formula for glucose is C6H12O6. Explain how parts of a glucose molecule are used to make amino acids.
Answers
Glucose is a monosaccharide containing an aldehyde group (-CHO). It is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms.
Glucose does not contain nitrogen like amino acid , so unless any chemical is involved glucose cant be converted to amino acid .
It is also known as dextrose. It is referred to as aldohexose as it contains 6 carbon atoms and an aldehyde group. This is the most abundant organic compound. Glucose is also known as reducing sugar because it belongs to the category open-chain molecule with an aldehyde group. Glucose is an important component of human blood normally ranges from 65 mg to 110 mg of glucose per 100 mL.
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The site within a chromosome where dna replication begins is known as the of replication.
Answers
At specific sites, referred to as origins, wherever DNA replication starts, the double helix of DNA unwinds.
What transpires when DNA replication occurs?Through process of DNA replication, the double DNA molecule is reproduced to produce two identical genetic molecules. Replication is a vital process because every when a cell divides, the two additional clones must share the very same genetic information, or DNA, as the parent cell.
What part of the cell does DNA replication occur in?DNA replication occurs in the nuclei of eukaryotic cells and the nucleoid sections of prokaryotic cells. Eukaryotic cells, which have a nucleus and organelles that are bound to membranes, include animal and plant cells. Eukaryotic cells contain their DNA in their nuclei.
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Indicate whe ether each affect or symptom of stress is associated with the Alarm Reaction or Stage of Resistance. Aldosterone levels rise ADH eflects CRH and ACTH dominanoe Cortisol effects Epinephrine effects Angiotensin levels rise Stage of Resistance ADH efects Alarm Reaction
Answers
The symptoms of stress are associated with both the Alarm Reaction and the Stage of Resistance.
How are the symptoms of stress associated with different stages?The body's response to stress involves multiple stages, including the Alarm Reaction and the Stage of Resistance. During the Alarm Reaction, the body releases stress hormones such as adrenaline and cortisol, leading to various physiological changes.
Symptoms such as increased heart rate, sweating, and heightened alertness are associated with the immediate response to stress. As the stress continues, the body enters the Stage of Resistance, where it attempts to adapt and cope with the ongoing stressor.
This stage is characterized by the activation of various hormonal and physiological mechanisms, including increased levels of aldosterone, antidiuretic hormone (ADH), and angiotensin. These changes help regulate blood pressure, fluid balance, and electrolyte levels.
Symptoms such as increased water retention and elevated blood pressure can be observed during this stage.
In summary, the symptoms of stress are influenced by both the immediate response (Alarm Reaction) and the long-term adaptation (Stage of Resistance) to stressors.
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During the reactions of glycolysis, one molecule of glucose is converted into how many molecules of pyruvate?.
Answers
One molecule of glucose is transformed into two molecules of pyruvate during glycolysis processes. It affects both aerobic and anaerobic organisms.
The process of breaking down glucose to create energy is known as glycolysis. It produces two pyruvate molecules, as well as ATP, NADH, and water. There is no requirement for oxygen throughout the process, which takes place in a cell's cytoplasm. During glycolysis, glucose is eventually transformed into pyruvate and energy. The fundamental objective of glycolysis is not to make adenosine 5′-triphosphate; rather, it is to produce pyruvate for the trichloroacetic acid (TCA) cycle. The glycolytic production of pyruvate decreases the cytosol by increasing the ratio of NADH [a reduced version of NAD+ (nicotinamide adenine dinucleotide)] to NAD+.
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Answer this. First person to answer correctly wins some brainlyness!
What is the largest order in the Phylum Aves?
Answers
Answer:
Passeriformes - Perching Birds 3
Explanation:
Which term describes the area where apopulation lives?A. Age StructureB. Migration LocationC. Growth rateD. Geographic Distribution
Answers
Commonly the place where a population lives is described was a habitat, forming a biological community, however there is not an option with that term, but between the present terms the one that is closer to a term for the area where a population lives is D. Geographic Distribution, since all the other alternatives are related to different factors of ecological studies.
The minimum number of microorganisms necessary to enter the body and establish infection is termed the _______.
Answers
Answer:
it is term to the power of the White blood cells