The gwd (ground water disinfection) rule is concerned with potential health hazards from pathogenic viruses and bacteria in groundwater and water-borne viruses. Correct answer: letter B.
The standard for groundwater disinfectionOne of the most important aspects of public health is ensuring that the water we drink is clean and safe. The gwd (ground water disinfection) rule is designed to protect us from these potential health hazards.
There are two main ways to disinfect groundwater:
Chlorination is the most common method, and it is effective at killing viruses and bacteria. Ultraviolet light is also effective, but it is more expensive.The gwd rule requires that all public water systems disinfect their groundwater. This protects us from pathogenic viruses and bacteria that could make us sick. It also protects us from water-borne viruses that could cause serious illnesses.
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Since dna is __ charged, samples should be loaded at the __ end of the gel electrophoresis chamber.
Answer: Negatively; Positive.
A virus that infects bacteria is called a __________, which is made up of the macromolecules __________ and __________.
A virus that infects bacteria is called a bacteriophage which is made up of the macromolecules DNA and Protein.
How do you explain bacteriophage ?A bacteriophage, or phage in colloquial use, is a duplodnaviria virus that infects and replicates inside bacteria and archaea (/bktrio/). The word "bacteria" was taken from the Greek verb "phagein," which means "to consume." Bacteriophages are made of proteins that enclose a DNA or RNA genome and can have either straightforward or complex structural designs. Their genomes might contain as little as four genes (MS2, for example) or as many as hundreds. The insertion of the phage genome into the cytoplasm of the bacterium initiates phage replication within the bacterium.One of the most prevalent and varied organisms in the biosphere is the bacteriophage. Bacteriophages are pervasive viruses that may be found anywhere there are bacteria.Learn more about bacteriophage refer to :
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foods that are rich with protien
one sperm fertilized one egg, and the resulting child had blond hair and brown eyes. How is this possible given the parents genotypes?
Answer:
We will represent the alleles with letters:
Which of the following occurs during interphase?
A. Chromosomes line up in the middle of the cell
B. DNA replicates
C. Chromosomes pull away from the equator of the cell
D. Chromosomes become visible
Answer:
During interphase, the cell grows and DNA is replicated.
Explanation:
This is because
during the mitotic phase, the replicated DNA and cytoplasmic contents are separated and the cell divides.
What is the relationship between grain size and conditions in bottom sediments?
Answer:
Grain size represents the conditions under which the sediment was deposited.
Explanation:
Which person has potential and kinetic energy?
Answer:
A person who is climbing up a slide
Explanation:
hershey and chase used bacteriophage (bacteria viruses) infection to identify the genetic material. what was their key finding?
The fundamental discovery made by Hershey and Chase is that DNA is the hereditary material. They did this by using bacteriophage (bacteria viruses) infections to identify the genetic material.
What do you understand by the term viruses?A virus is a microscopic, contagious organism that can only grow inside of living cells. Virus infections are possible in all living organisms, include plants, animals, and microorganisms like bacteria and archaea. A virus is an infectious microorganism made up of a protein-coated segment containing nucleic acid (either DNA or RNA). A virus can't multiply by itself; it has to infect cells in order to utilise the host cell's components to produce copies of itself.
Who first discovered virus and who is the father of virus?In 1898, Beijerinck was the first person to refer to the cause of a tobacco mosaic as a "virus." He demonstrated that the instigator could travel within an agar gel, indicating it was a infectious soluble agent, called "contagium vivum fluidum," and categorically not a "contagium fixum," as would be the case with bacteria. As the father of virology, Martinus Beijerinck is frequently referred to. The laboratory of Beijerinck became a significant microbiology hub.
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What would be the matching strand for this single strand of DNA? Type your answer in all caps. ATTGCCATTA
The matching strands will be TAACGGTAAT.
In DNA base pairs of one strand in DNA bind with the base pairs of the other strand. A always pairs with T with two hydrogen bonds and G always pairs with C with three hydrogen bonds. So if one strand is ATTGCCATTAthen the complementary strand will be TAACGGTAAT.
Rules of base pairing are pairing will always be A with T the purine adenine (A) always pairs with the pyrimidine thymine (T) ,C with G the pyrimidine cytosine (C) always pairs with the purine guanine (G). In DNA two strands are always held together by hydrogen bonds between pairs of two bases adenine pairs with thymine, and cytosine pairs with guanine.
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Which stage of cellular respiration produces the most energy for the cells
Answer:
the electron transport system - 3
Explanation:
Answer: The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS).
Explanation: The inner mitochondrial membrane holds the ATPase enzyme and the complexes for ETS. In mitochondria, an electrochemical gradient is produced by the function of ETS, between the matrix and inner mitochondrial space(High at internal mitochondrial space and low at matrix). ETS gets electrons from the oxidation of NADH and FADH2. The ATPase enzyme situated in the inner mitochondrial membrane allows protons to flow down their electrochemical gradient. This proton motive force is utilized for the phosphorylation of ADP into ATP. Thus, the production of ATP through ETS is called oxidative phosphorylation as oxidation and phosphorylation occur.
Match the causes with their effects.
injecting fracking fluids
into the ground
oil spills during transport
on a ship
destroys animal habitats and
causes topsoil to erode
pollutes groundwater with
dangerous chemicals
harms aquatic creatures
and vegetation
Reset
Next
deforestation
Deforestation destroys animal habitats and causes erosion of the topsoil. 2) releases hazardous chemicals into the groundwater—fracking fluid injections; 3) endangers marine life and vegetation—oil spills on ships.
During fracking, what is injected?Propargyl alcohol, ethylene glycol, and methanol are typical components. These substances are regarded as harmful to human health, along with many others found in fracking fluid.
What is the animal population's habitat?A habitat is a place where a living thing spends the entire year or only temporarily while searching for a partner. The habitat provides all the necessities for an animal to survive, including food and shelter.
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hemostasis has three major steps. the first is vasoconstriction and the final step is coagulation. what occurs between these two steps?
The physiological mechanism by which bleeding stops is known as hemostasis. Vasoconstriction, platelet plug development, and coagulation, in which clotting factors encourage the creation of a fibrin clot, are the three fundamental phases in hemostasis.
The process by which a clot is broken down in a healed vessel is known as fibrinolysis. Inhibitors of coagulation are known as anticoagulants. They have a critical role in reducing the intensity and duration of clotting.
Too few platelets or insufficient generation of clotting factors, such as in the genetic condition hemophilia, can both contribute to poor clotting. Excessive platelet production can result in thrombosis or excessive clotting. An embolus is a thrombus that has broken free from the vessel wall and is moving through the bloodstream, whereas a thrombus is an accumulation of fibrin, platelets, and erythrocytes that has accumulated along the lining of a blood vessel.
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Vocabulary Matching
Ecosystem, specialist species, niche, habitat, nonnative species, generalist species, extinction, Keystone species, indicator species, natural selection
An organism's home is known as its habitat, and its function in its environment is known as its niche. While niche focuses on how the creature effects the environment, habitat focuses on how the environment impacts the organism.
What about species?A group of things that share the same kind and name: kind. A group of related organisms with the capacity to bear viable offspring that falls below the genus level and is designated by a two-part scientific name. A group of plants or animals that may reproduce together and have similar characteristics is referred to as a species.A collection of people with similar traits who can interbreed to create fruitful offspring is how species are frequently defined. Alpaca - Vicugna pacos are two examples. A group of creatures that can naturally reproduce with one another and generate viable progeny is sometimes referred to as a species. However, classifying a species can be challenging and even contentious. The billions of people on the planet now are all members of the same species, Homo sapiens. Human beings differ among themselves, just like other species do, in terms of everything from size and shape to skin tone and eye color. The two-part name that Linnaeus invented is still used today and is currently presented in either Latin or Greek. It was originally used for plants and then later for animals. The first identifies the larger group, known as a genus, to which the plant belongs, while the second refers to the plant itself as a species.Learn more about species here:
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Describe the two car accident in which glass evidence is present. what kind of glass would be present as evidence? how would they determine which car the glass came from? how would they, step by step, collect and document it?
Answer:
Explanation:
1. Glass that is small and shattered.
2. They can find where the car came from by comparing the glass on the ground to the types of glass on the cars.
3. First they would collect a sample of the glass. Second, they will bring it to a lab and compare it. Finally, they would write down the results in a notebook.
Based on your knowledge of the light-independent reactions of photosynthesis, what do you think it means to “fix” carbon? You can use information from earlier in the lesson and the diagram on the right as resources.
Photosynthetic organisms (like plants) convert inorganic carbon into organic compounds through a process known as carbon fixation (carbohydrates). For instance, CO2 fixation, a kind of carbon fixation, involves converting atmospheric carbon dioxide into carbohydrates.
What is light independant reaction?
The photochemical process of photosynthesis involves a number of light-independent biochemical events that result in the formation of organic compounds from carbon dioxide. This metabolic pathway is propelled by the energy released from the ATP created during the light reactions.
Hence, the answer is the conversion of organic compounds to carbon dioxide.
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Rhinos - have 2 specific traits that will help them be more successful in the wild. Rhinos who have an extra long prehensile lip (ll) are able to get food easier while those with extra long ears (ee) are able to hear predators better. Both of these traits are considered recessive traits. The dominant traits are regular lip length and normal sized ears. (Intro to Genetics)
Answer:
what does the question require us to find? is this the entire thing?
what does aluminum need to do in order to become stable?
A metal with three valence electrons and weak electron attraction is aluminum. It needs to lose these valence electrons in order to reach a stable octet (previous energy level has 8 electrons).
What is valency?The number of atoms of one element coupled with one atom of another to create a molecule is known as the valency.
Valency and molecular weight are two related terms. A measure of an atom's combining capability is its valency. The quantity of electrons in an element's outermost shell determines its valency.
Valency is simply the amount of electrons that an element's atom gains, loses, or shares to obtain the closest configuration to that of a noble gas.
With an electronegativity of 1.61, aluminum is a very reactive element and will rapidly lose 3 electrons to change its electron configuration to the stable Ne octet, forming the stable Al(III) cation.
Thus, this way, aluminum do in order to become stable.
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PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
C. Different
Explanation:
Turtles and Tortoises have very similar features such as a shell and other things. But Tortoises live on land, and are not made to go in the water like turtles. They don't have webbed feet, or flippers, and turtles do which makes them such good swimmers. Turtles are made to live in water, so they have special features that help them adapt to a different environment too. So that is why the answer is C. Different.
-Hope this helped
Answer:
different
Explanation:
all the other choices have the same meanings
What is found in the filtrate?Group of answer choicesWaterNutrients and wastesSaltsAll of these options are correct
EXPLANATION:
In a glomerular filtrate (water that passed through the filtering of the kidney), it contains water, dissolved nutrients and wastes, and salts.
ANSWER: All of these options are correct.
suppose a type of plant has only chloro phylls a and b and is exposed to different wavelengths of light. at which wavelengths would there be the greatest amount of carbon dioxide in the air around plants? The least? explain your answer
Light is the most efficient and important thing for the process of photosynthesis.
Photosynthesis is dependent on light intensity when low intensity light falls on the surface the amount of carbon dioxide fixed will also be low .Plants there fore proceeds with the process of photosynthesis in the 400-700 nm range of the light. Which is one of the most suitable light range for the plants.
Hence, light Color plays a vital role in photosynthesis process this function is most rapid in the blue and red colour wavelengths of the visible white light that falls on the surface. Blue and red light provide a better environment for plant growth .
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The calvin cycle can best be described as the ______________________ reactions of photosynthesis.
The Calvin cycle can be best described as a non light-dependent (since they do not directly require light) reaction of photosynthesis
The Calvin cycle, also known as the dark reactions, bio synthetic phase, light-independent reactions, or photosynthetic carbon reduction (PCR) cycle, is a chain of chemical processes that produces glucose from carbon dioxide and hydrogen-carrier molecules. All photosynthetic eukaryotes as well as many photosynthetic bacteria contain the Calvin cycle. These reactions take place in the stroma, the fluid-filled area of a chloroplast that is not covered by the thylakoid membranes, in plants .
The Calvin cycle generates sugars for usage by the plant using the chemical energy of ATP and the reducing power of NADPH from light-dependent processes.
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Explain why, in terms of photons, ultraviolet light can damage cells in your skin but visible light cannot.
Because UV waves are shorter than visible light waves, UV has more energy than regular light.
More importantly, UV photons have enough energy to damage or destroy DNA, whereas visible and infrared photons do not. When we absorb visible or infrared photons, the energy carried by the photon heats us up, but unlike ultraviolet photons, it does not permanently damage our cells.
The UV camera simply shows more melanin accumulation than we could see on our own, and the damage appears as a dark spot on the skin. Dry skin, which appears as a greenish glow or as bright green spots where the dry skin has flaked off, is also revealed by UV cameras.
Because UV waves are shorter than visible light waves, UV has more energy than regular light. UV photons have the necessary energies to cause chemical reactions.
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Consider models of cell reproduction. Evaluate the statements and select ALL that are NOT supported by the models.
The cell division cycle is responsible for increasing and maintaining cell number and size. This cycle is an essential feature of living organisms. These are model of cell reproduction:
The mitotic phase (M phase), growth phase 1 (G1), growth phase 2 (G2), and synthesis phase are the four stages of cell division (S). Phase transitions are unidirectional changes in the cell cycle phases when one phase of the cycle finishes and the next begins. Cells expand and divide throughout the G1, G2, and S phases of the cell cycle. The clock model and the domino model are the two cell reproduction models. According to the domino model, the various stages of cell division must take place in a specific sequence and at a specific time. The clock model demonstrates that the efficiency of mitotic entrance was not persuaded by other acts, contrary to the domino model's recommendation that the cell cycle events are independent.
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Which of the following does NOT slow down or stop an enzyme's rate of
reaction?
Ohigh heat
O a lot of enzymes breaking down substrates
Odrastic change in pH
incorrect linking of amino acids (which changes the shape of the enzyme)
A lot of enzymes breaking down substrates does NOT slow down or stop an enzyme's rate of reaction.
By lowering the activation energy and consequently raising the rate of reaction, enzymes (and other catalysts) work. Since both directions must travel through the same transition state, the increased rate is the same in both the forward and reverse directions.An enzyme is a specific type of protein found inside of cells that catalyses chemical reactions necessary for maintaining life within the body. The important functions that enzymes perform are their purpose. These entail the development of muscles, the elimination of toxins, and the breakdown of food molecules during digestion.The biochemical modification of the enzyme—phosphorylation—or the use of positive modulators with low molecular weight can both speed up the activation of the enzyme. It is theoretically possible to bind molecules to enzymes to increase catalysis, just like with receptor agonists.To know more about enzymes check the below link:
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The table below summarizes Mendel’s results for the F2 generation.Mendel’s ResultsPlant height787 tall277 shortFlower color705 purple224 whiteFlower position651 middle of stem207 end of stemPod color428 green152 yellowPod shape882 inflated299 constrictedSeed color6,022 yellowx greenSeed shape5,474 smooth1,850 wrinkledWhat number should replace the letter x in the “Seed color” row?1522072242,001
The correct answer is 2,001 for the green seed color.
As we can notice in the given results of the different phenotypic characteristics of the plants, it follows a 3:1 ratio. The 3 is the dominant trait while 1 is the recessive trait.
normal microbiota provide protection from infection in each of the following ways except a. they produce antibacterial chemicals. b. they compete with pathogens for nutrients. c. they make the chemical environment unsuitable for nonresident bacteria. d. they can change the ph of the environment. e. there are no exceptions, all the above are true.
For the above question, option E is the correct answer: there are no exceptions, all the above are true.
Protection against infection is provided by proper microbiome. They create compounds that are antimicrobial. They compete for nutrients with pathogens. By altering the chemical environment, they render nonresident bacteria unsuitable. They have the ability to alter the environment's ph. Thus all the statements are true.
By activating immune responses, metabolically keeping pathogens out of their favoured habitats, and directly combating microbes, the microbiota defends against infection. A significant risk factor for bacterial pathogen colonisation is the disruption of the microbiota, particularly by antibiotics.
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the first aquatic vertebrates arose at approximately the same time as the plants on land. true or false
Members of the subphylum Vertebrata, fish, and other aquatic vertebrates live most of their lives in freshwater, saltwater, or estuarine habitats. Invasive aquatic vertebrates in the United States are mainly fishes (including Asian carp), although they can also be reptiles, amphibians, and mammals.
Vertebrates are any animals that have a backbone. They include fish, amphibians, reptiles, mammals, and birds and are typically the most well-known of all animals.
Fish, amphibians, reptiles, mammals, and birds make up the five common classes that make up the phylum Chordata (animals having backbones).
Plants that grow on land are referred to as terrestrial plants. Terrestrial plants include the apple tree, rose, and mango tree. Terrestrial plants include plants found in deserts.
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Cancer results from damage to
Why doesn't anything stick to teflon? What does this have to do with friction?
Answer:
We know that nothing sticks to Teflon because Teflon is unable to form chemical bonds with outside molecules. Even the weaker short-range interactions like van der Waals forces with other molecules are ineffective. ... PTFE's extreme slipperiness can be attributed to its super low coefficient of friction.
Explanation:
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May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!
The figure below displays the Baltimore system of virus classification. All viruses have nucleic acid based genomes, but not all viruses store their genes as DNA. How does this challenge our conventional understanding of how genes are expressed? Use the figure to provide an example of a virus class that expresses its genes in a unique way
Every virus depends on the host's translational machinery since viruses lack a complete system for protein translation.
What is Baltimore system?The Baltimore system is based on the way that equipment is used by viruses. The central component of this classification scheme is messenger RNA (mRNA), and the various routes from DNA or RNA genomes to mRNA represent the many classes.
Six classes of viruses were initially included in the Baltimore Classification System. However, to accommodate the gapped DNA genome of Hepadnaviridae, a seventh class was added.
Before it starts to multiply, a double-stranded DNA virus reaches the host cell's nucleus. It relies heavily on the host cell cycle because it uses the host polymerases to reproduce its genome.
Therefore, Every virus depends on the host's translational machinery since viruses lack a complete system for protein translation.
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