Answer: The exclusion of microbes, such as bacteria and spores.
Explanation:
The swan-neck flask broth was able to remain sterile because the "dips" of the flask's neck acted as a reservoir to contain microbes that managed to get in through the open mouth.
Determine if there is a statistically significant difference between the absorption data of black walnut trees and maple trees.
Based on the data, it can be concluded there is a statistically significant difference between the absorption data of black walnut trees and maple trees.
What does statistically significant difference means?This term is used when there is an important difference between the data gathered of two or more groups.
Is there a statistically significant difference in this case?Based on the date, there is a statistically significant difference between black walnut trees and maple trees because the average carbondioxide absorption is different.
Black Walnut average : 7.26 Maple tree average: 5.82.This shows the difference between these two type of trees is almost 2, which is a big difference that is likely caused by the unique characteristics of each tree.
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_____ is any material added to the atmosphere that harms organisms, affects the climate, or impacts structures.
Air pollution is any material added to the atmosphere that harms organisms, affects the climate, or impacts structures.
What is air pollution?As a result of the presence of compounds in the atmosphere that are hazardous to human health and the health of other living things, or that impair the climate or materials, air pollution is the contamination of the air. Air contaminants come in a variety of forms, including gases, particles, and biological substances.An air pollutant is any substance, whether chemical, physical, or biological, that modifies the atmosphere's inherent qualities. Indoor and outdoor air pollution are both possible. Motor cars, industrial processes, home combustion appliances, and forest fires are some common sources of air pollution. Air pollution happens when harmful gases and chemicals are released into the atmosphere.Particulate matter, nitrogen oxide, and sulfur dioxide are some of these contaminants.Learn more about air pollution here:
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As a percentage of weight, muscle is about _____ percent protein and about _____ percent water.
As a percentage of weight, muscle is about 20 percent protein and about 75 percent water.
What is muscle?Muscles are made up of numerous elastic fibers. Body contains more than 600 muscles. The functions of various muscle groups vary. Some muscles enable you to move quickly like running or jumping or deftly like threading a needle.A bodily part made up of lengthy cells that, when activated, constrict and move. An organ that, by contracting, moves or restrains the motion of a body part. It is essentially a mass of muscular tissue linked at either end to a fixed point.Only muscle tissue in the body has the capacity to contract, which allows it to move other body components. The second purpose of the muscular system is maintenance of posture and body position, which is connected to the purpose of movement.
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Cyclogenesis occurs frequently on the eastern slopes of the rockies as a result of ____.
Answer:
Cyclogenesis occurs frequently on the eastern slopes of the rockies as a result of compressional heating.
A trna with the anticodon sequence 5′ iua 3′ will not normally exist because?
A trna with the anticodon sequence 5′ iua 3′ will not normally exist because 5′ UAA 3′ is a stop codon.
There are three stop/termination codons UAA, UAG, and UGA.
A unique type of RNA molecule is called a transfer RNA (tRNA). Matching an mRNA codon to the amino acid it codes for is its responsibility. Anticodon is a set of three nucleotides found in each tRNA. One or more distinct mRNA codons can bind to the anticodon of a particular tRNA. The amino acid encoded by the codons to which the tRNA binds is carried by the tRNA molecule as well.
At the third position of the codon, atypical base pairs—between nucleotides other than A-U and G-C—can develop. This phenomenon is referred to as wobble.
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An analogy of the hypothalamus would be?
Answer choices:
Police force of a country
Major cities of a country
Citizens of a country
The Michael Jackson of a country
Legislative body of a country
An analogy of the hypothalamus would be the police force of a country.
What is the hypothalamus?The hypothalamus is one of the major regions of the brain. It functions as the smart control center of the body.
The hypothalamus controls body physiology and ensures that the normal range of operation of physiological processes is not exceeded. In other words, it keeps orderliness in physiological processes.
For example, the normal range of human body temperature is 36.5 to 37 degrees celsius. Once this range is breached, the hypothalamus activates the body system to return it back to normal.
This is comparable to the work of the police force of a country. They keep law and order. They ensure that laws are not broken and when they are, they ensure swift action to restore normalcy.
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A client is admitted with hypocalcemia. What are possible causes of hypocalcemia?
Hypocalcemia can result from the following factors:
Lack of vitamin D or vitamin D resistance post-surgery, hypoparathyroidism due to autoimmune illness or hereditary causes of hypoparathyroidism Inadequate vitamin D levels are brought on by renal disease or advanced liver disease. Hypoparathyroidism, also known as pseudohypoparathyroidism Parathyroid gland metastatic growth or heavy metal (copper, iron) invasionAcute hypocalcemia is characterised by neuromuscular irritability. Cardiovascular symptoms of acute hypocalcemia are possible. Chronic hypocalcemia is frequently brought about by insufficient parathyroid hormone or vitamin D levels or by hormone resistance.
The right course of treatment depends on knowing the difference between acute and chronic hypocalcemia and between hypocalcemia with no symptoms and hypocalcemia with severe symptoms.
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A benefit of parental care is ___________, while a disadvantage is ___________.
A. symbiosis, parasitism
B. increased survival, high cost of time and energy
C. group behavior, feeding the group
D. incubation of eggs, less young can be raised
X-gal is included in the growth medium on which cells transformed with bacterial plasmids are grown. The reason x-gal is included is to _______.
Identify bacteria that contain a recombinant plasmid
Ampicillin is an antibiotic that stops E. coli from building cell walls, killing the bacteria in the process. The presence of the ampicillin-resistance gene causes the development of an enzyme that prevents the action of ampicillin, allowing the bacteria to survive
What is Plasmid DNA ?Bacteria and certain other microscopic species contain plasmids, which are tiny circular DNA molecules. Physically distinct from chromosomal DNA, plasmids multiply on their own.
Only a small number of genes are carried by plasmids, which are separate from chromosomes, the main cell structures that house DNA. Plasmids can be taken up from the environment and passed between bacteria since they have the ability to self-replicate. The host organism makes use of plasmids to deal with situations brought on by stress.Learn more about Plasmid DNA here:
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Secondary bacterial infections occur frequently during influenza epidemics primarily because?
Because the virus causes severe tissue necrosis and inflammation, secondary bacterial infections happen often during influenza outbreaks.
What are Secondary infections?
There are several ways that a primary infection can increase susceptibility to disease, leading to a secondary infection.
A secondary infection is one that develops during or following the treatment for a primary illness. It has been determined that a secondary bacterial infection affects up to 75% of people who acquire pneumonia after contracting the flu.
The prevalence of influenza and related secondary bacterial illnesses can be decreased by using infection prevention techniques. The best method to prevent this is to be vaccinated against the flu every year and practice proper hygiene, like frequent, thorough handwashing.
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A parasitic fungus that attacks rye plants produces a structure called a(n) ________.
A parasitic fungus that attacks rye plants produces a structure called an Ergot.
Ergot is a fungus that grows on rye and less commonly on other grasses such as wheat. Parasitic fungi that live on plants are called phytopathogenic fungi. The first obvious sign of ergot infection is appearance of 'honeydew', a sticky yellow sugary solution consisting of host sap and conidia between the affected glumes of the rye. Ergotism is a form of poisoning from ingesting grains, typically rye, that have been infected by the ascomycete fungus Claviceps purpurate. Ergotism has no antidote, so treatment involves removing the animals from the source of the ergot and alleviating the symptoms.
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Student provides an explanation for carbon dioxide fluctuations for different seasons of the year. ( 2 points)
Carbon dioxide fluctuations occur for different seasons of the year due to the presence of plants in an area.
Why carbon dioxide fluctuations occur for different seasons of the year?The carbon dioxide levels in the atmosphere moves up and down every year when plants use carbondioxide gas through the process of photosynthesis and respiration. Plants take up the carbondioxide gas in the spring and summer season and release it in fall and winter season. In this modern world, the level of carbon cycle is increasing because more carbon dioxide is emitted from burning fossil fuels and other human activities.
So we can conclude that carbon dioxide fluctuations occur for different seasons of the year due to the presence of plants in an area.
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Red maple tree seeds are dispersed by the wind. this species of tree can be found in fields, woods, and even wetlands. this is an example of a ________ distribution.
Red maple tree seeds are dispersed by wind. This is an example of Anemophilic distribution.
Maple tree seeds are lightweight They have wing like outgrowth.Maple tree have efficient seed dispersion system.The seeds descend to the ground known as Samaras.Learn more about Anemophily here, https://brainly.com/question/13976657?referrer=searchResults
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Which part of the peripheral nervous system would send impulses to the skeletal muscles in the arm?
The part of Peripheral Nervous System (PNS) that would send impulses to the skeletal muscles in the arm is Somatic Nervous System.
Somatic Nervous System is the voluntary part of the Peripheral Nervous System (PNS) which is associated with voluntary activity of the human body with the help of skeletal muscles in the body.
Somatic Nervous System consists of two kinds of nerves namely Spinal nerves and Cranial nerves.
Spinal nerves transmits information to the body from spinal cord.
Cranial nerves transmits information to the neck and head from the brain.
Somatic Nervous System controls the movement of the skeletal muscle present in the arm and leg. It controls the voluntary actions of the body which is under our control.
It controls the transmission of impulses received from the senses to perform reflex actions without involving the Central Nervous System (CNS)
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Proteins may be classified according to their three-dimensional shapes. Determine whether the following examples and descriptions refer to fibrous proteins, globular proteins, or both fibrous and globular proteins. True or false?.
Often function as enzymes or transport proteins → globular proteins
peptide chains arranged in long strands, or fibers → fibrous proteins
peptide chains highly folded into spherical shapes → globular proteins
keratins → fibrous proteins
hemoglobin → globular proteins
water-soluble → globular proteins
collagens → fibrous proteins
insoluble in water → fibrous proteins
What is Fibrous protein ?Polypeptide chains in fibrous proteins are arranged almost parallel along a single axis, resulting in long fibres or broad sheets. These proteins frequently exhibit mechanical strength and resistance to water solubilization. In nature, fibrous proteins frequently perform a structural role.
What is Globular proteins ?Soluble in water solutions, globular proteins are often. The wide range of activities carried out by globular proteins, including binding, catalysis, regulation, transport, immunity, and cellular signalling, is reflected in the diversity of protein shapes.
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A geologist’s compass differs from the more widely known orienteering compass in that the geologist’s compass ________.
A geologist's compass differs from the more widely known orienteering compass in that the geologist's compass can measure dip and plunge angles.
What is a compass?A compass is an instrument used to examine one’s position on the map area and to determine the relative position of various objects.It gives an idea of where you are heading to and where you need to be going.The geologist’s use a special type of compass which can not only determine the position but also make structural measurements of geological structures like dip of areas like sedimentary beds and plunge of fold axis.A clinometer is necessary in a compass to measure all the structural data. It measures features from the horizontal like dip and plunge, and gradient.Learn about magnetic compass here:
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What happens with oxygen and carbon dioxide during the process of pulmonary respiration? emt
Gas Exchange happened during the process of pulmonary respiration which is essential for the human body.
In your chest, lungs are present in pairs that are spongy, pinkish-gray organs.
Our body inhales and exhales air, when our body inhales, then oxygen enters our body. And exhales the carbon dioxide that is the waste gas. This process is called a Gas exchange.
In the respiratory system, the lungs are the center part. It also includes the trachea (windpipe), blood vessels, muscles of the chest wall and diaphragm, and other tissues. With all of these, the gas exchange becomes possible. Our brain also plays an important role as it controls your breathing rate.
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Question 2
The following chart lists taxonomy classifications for seven organisms. Some have just one classification,
while others have a subclassification. Which four classifications best match the classifications of your
fossils? Research the classifications if you don't know their characteristics.
Classification
Organism 1 Brachiopoda
Organism 2 Mollusca, Gastropoda
Organism 3 Arthropoda, Trilobita
Organism 4 Chordata, Actinopterygil
Organism 5 Pteridophyta
Organism 6 Nematoda
Organism 7 Ascomycota
Now complete the following table to explain your reasoning for the classification of your fossils.
The four best classifications of fossils which match my classification are:
Body Fossils.Molecular Fossils.Trace Fossils.Pseudofossils.The classification of Mollusca, Gastropoda is given below:
They are invertebrates
They have seven different classes:
AplacophoraMonoplacophoraPolyplacophoraBivalviaGastropodaCephalopodaCcaphopoda.What is classification of living organisms?The classification of living organisms simply means grouping or classifying living things together on the basis of characteristic similarities and differences which exist between different species of living organisms
So therefore, the phylum mollusca are organisms which are all invertebrates, i.e, animals without backbone.
In conclusion, the four best classifications of fossils which match my classification are:
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Being an extremely unhealthy academic, Mike is a shut-in and works by only candle light, which he never puts out. He hasn't seen the sun nor spoken face-to-face with anyone in years. However, he still sleeps and wakes up roughly at the same time as normal people because he is a very special lad. How is he still able to maintain this sleep schedule?
Answer choices:
He has a hereditary condition that confers unnaturally precise CLOCK gene expression.
He has a hereditary condition that confers unnaturally precise PER gene expression
His CLOCK genes last 16 hours and turn off for 8 hours
Mike's CLOCK expression is harder to suppress
The candle is always alight, entraining his SCN
Mike is able to maintain this sleep schedule because He has a hereditary condition that confers unnaturally precise CLOCK gene expression (Option A).
What is an adaptation?Adaptations are phenotypic features that naturally appear in a population as a consequence of genetic variation which are expressed to determine the level of the trait.
In this case, it is expected that Mike exhibit certain genetic features associated with his circadian rhythm.
In conclusion, Mike is able to maintain this sleep schedule because He has a hereditary condition that confers unnaturally precise CLOCK gene expression (Option A).
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Which correctly describes the projected growth of the worlds population in the future
The goal of population projections is to predict future changes in the statistics of the human population. These projections are a crucial component of analyses of the population's effects on the environment and the future well-being of humanity.Population growth models relate future estimates to tendencies in human development. In order to understand how economic, social, and technical influences will affect fertility and mortality, and subsequently population increase, these models make trend-based assumptions about how populations will respond to these pressures.
What is Cytoplasmic Projections?
Cytoplasmic In live cells, there is a jelly-like substance called this. It's possible that the cytoplasmic projection separates the cytoplasm from the mitochondria.
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Which pcs root operation is used for an adhesiolysis when adhesions are freed from a body part they are restricting?
Release pcs root operation is used for an adhesiolysis when adhesions are freed from a body part they are restricting.
What is release Root operations?Root operation is refers to the cutting of the upper or lower extremities.
What is adhesiolysis?Adhenolysis is the surgical procedure that removes abdominal adhesion to regain the normal anatomy and functionality of an organ.
What are adhesion?Adhesions are the bands of scar-like tissue that form inside of the organ that cause tissue or organ to stick together.
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Determine whether the statement is true or false, and why. “If a theory becomes supported by evidence, it can become a law.” A. False, it should read, “If a theory becomes supported by evidence, it can become a hypothesis.” B. False, it should read, “A theory and a law are already both supported by evidence and are equal, but they have different functions.” C. False, it should read, “A theory and a hypothesis are already equally supported by evidence, but they have different functions.” D. True
The given statement is False, it should read, "A theory and a law are already both supported by evidence and are equal, but they have different functions."
In the scientific method, a "Theory" and a "Law" are already both supported by evidence, but they serve different purposes.
The role of "Theory" in the scientific method is to provide a justification for the data collected through observations and results. As more data is gathered, it may be altered, enhanced, or even dismissed. While a "law" typically refers to an observed natural event that is true no matter how it is tested. It doesn't explain why the incident or event actually happened.
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An investigator who conducts an experiment to determine how changes in pH affect the function of enzymes on digestion is most likely to be a/an __________. histologist neurologist physiologist engineer anatomist
An investigator who conducts an experiment to determine how changes in pH affect the function of enzymes on digestion is most likely to be a physiologist. The correct option is C.
What is physiologist?A physiologist examines human organization and how its organs and systems interact at the cellular and molecular levels under normal and anomalous conditions.
A physiologist may excel in the physiology of a specific body area, function, or system, as well as in the physiology of plants or animals.
A physiologist is likely to conduct a study to see how changes in pH influence the impact of enzymes on digestion.
Thus, the correct option is C.
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What does the stomach have in common with the blood vessels, the arrector pili muscles, and the bronchioles?
Arrector pili muscles stomach have in common with the blood vessels.
The appendageal structures of the skin include the hair follicle, sebaceous gland, the apocrine gland, and the arrector pili muscle (APM), these structures are all located in the dermis and are functionally and anatomically related.
The contraction of these muscle are involuntary, in response to Stresses such as cold, fear .Thick skin also contains no arrector pili muscles, which cause goosebumps. Thick skin is thicker because it contains an extra layer in the epidermis, called the stratum lucidum.
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A mutant p53 gene can lead to the production of a ______, which in turn results in ______
A "faulty transcription factor" produced by a mutated p53 gene, prevents the transcription or translation of a polypeptide that prevents cell proliferation.
Tumor suppressor,p53 gene:
The p53 gene, a tumor suppressor is frequently inactivated during the tumorigenic process. The p53 gene is often altered, producing a persistent mutated polypeptide whose development is thought to be a characteristic of cancer cells. In contrast to losing their tumor-suppressing properties, mutant p53 proteins frequently acquire new carcinogenic properties that provide cancer cells an edge in terms of both survival and proliferation. It is fascinating to note that p53 gene mutations have been linked to several stages of the multi-step malignant transformation process, each of which contributes differently to tumor start, amplification, competitiveness, and migration.Learn more about the p53 gene here:
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The brain relies solely on ________ as its energy source. if it is deprived of this substrate, the cells soon die.
The brain relies solely on "glucose" as its energy source. if it is deprived of this substrate, the cells soon die because during the fasting state, proteins and fats are transformed to glucose.
What is glucose?The primary form of glucose in the body, glucose serves as the body's cells' main source of energy. Glucose can be produced by the body from other chemicals or it can be obtained from the meals we eat.
The bloodstream carries glucose to the cells. Insulin is one of many hormones that regulate blood glucose levels.
Some key points of glucose are-
The primary sugar in your blood is called blood sugar, or glucose. Your body uses it as its primary source of energy, and it originates from of the food you eat. All of the cells in your body receive glucose from your blood to be used as fuel.Diabetes is a condition in which you have too high blood sugar levels. Possessing too much sugar in your blood might have major consequences over time. You might occasionally experience issues with too low or too high blood sugar even if your don't have diabetes. Maintaining a regular eating, exercise, and medication regimen can assist.To know more about glucose, here
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Anatomically modern human fossils were discovered in the european upper paleolithic site of group of answer choices cro-magnon, france. atapuerca, spain. petralona, greece. mauer, germany.
Anatomically modern human fossils were discovered in the First European Upper Paleothilic Site was Atapuerca, Spain.
Following are some facts related to the discovery:
One of the most astonishing discoverySkulls of human have been foundDNA analysis report prove them to be NeanderthalsEarliest human communities in EuropeReserve of physical natureLearn more about Neadherthals here, https://brainly.com/question/1182138
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________ represent(s) a substantial portion of the population, and few new products and services can be profitable until this large group buys them.
Answer:
The early majority
Explanation:
Early majority is the term which represents a substantial portion of population, and some new products as well as services which can be profitable until a large group buys them.
In the context of the Diffusion of Innovations theory, developed by Everett Rogers, the adoption of new products and services follows a predictable pattern. The theory categorizes people into different groups based on their willingness to adopt innovations.
For many new products and services, achieving success in the market often depends on gaining acceptance from the early majority. Once this large group embraces the innovation, it can lead to widespread adoption and profitability for the product or service.
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Which process must occur for a muscle to be able to relax?
Answer:
Muscles must relax with the process called progressive muscle relaxation.
Progressive muscle relaxation is a non-pharmacological method of deep muscle relaxation, based on the premise that muscle tension is the body's psychological response to anxiety-provoking thoughts and that muscle relaxation blocks anxiety.
When a dna change converts an amino acid codon to a different amino acid codon. What type of mutation is this?
