What are three common water-borne pathogens?
Answers
Three common water-borne pathogens are Giardia, Cryptosporidium, and Norovirus.
Brief explanation of above mentioned pathogens are:
1. Cryptosporidium: A protozoan parasite that causes the disease cryptosporidiosis. It can survive for long periods in water and is resistant to chlorine disinfection.
2. Giardia: Another protozoan parasite that causes the disease giardiasis. It is found in water sources contaminated with human or animal feces and can cause severe diarrhea and abdominal pain.
3. Norovirus: A highly contagious virus that causes gastroenteritis. It is transmitted through contaminated food or water and can cause vomiting, diarrhea, and stomach cramps.
Other common waterborne pathogens include bacteria such as Escherichia coli (E. coli), Salmonella, and Vibrio cholerae, as well as viruses such as Hepatitis A and Rotavirus. It is important to note that the specific pathogens present in water depend on the source of contamination and the local environmental conditions.
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Related Questions
If mitosis divides a cell with 100 chromosomes, how many chromosomes will the new cell have?
Answers
why is it more accurate to classify living things into three domains versus prokaryotic/eukaryotic?
Answers
The three domains of living things are based on genetic information and the differences between prokaryotes and eukaryotes.
Why is the classification of living things into three categories rather than prokaryotic and eukaryotic more accurate?Classifying living things into three domains (Archaea, Bacteria, and Eukaryota) is more accurate because it takes into account the diversity of life on Earth. This method of classification recognizes that prokaryotic and eukaryotic organisms are only two of the three domains of life, and that there are other, more diverse forms of life that do not fit into either of those two categories. By recognizing the distinct features of these three domains, scientists are able to better understand the evolution of life on Earth and the relationships between different species.The three domains of living things - Bacteria, Archaea, and Eukarya - is a more accurate way to classify living things compared to prokaryotic/eukaryotic because it takes into account the overall differences in the evolution and characteristics of the organisms. By classifying organisms into three domains, scientists are able to better understand how these organisms evolved and how they are related to one another.Prokaryotes are single-celled organisms with no nucleus, while eukaryotes are multi-celled organisms that have a nucleus. Bacteria and Archaea are both prokaryotes, and Eukarya contains both prokaryotes and eukaryotes. By classifying organisms into three domains, scientists are able to better understand the evolutionary history of the various organisms and how they are related to one another.In addition, by classifying organisms into three domains, scientists can better identify organisms that are more closely related than those that are in the prokaryotic/eukaryotic categories. This is important because it allows scientists to more accurately study and compare different organisms.Because it is based on variations in the core biochemistry and genetics of these groupings rather than just the existence or lack of a cell nucleus, the three-domain system, which divides living organisms into the domains Bacteria, Archaea, and Eukaryota, is seen to be more accurate. This approach acknowledges that prokaryotic creatures (Bacteria and Archaea) and eukaryotic species differ significantly from one another and that each of these groupings is deserving of its own distinct classification. This method also aids in highlighting the distinctive qualities and evolutionary background of each area.
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What would happen to the plant population if the caterpillar population decreased?
Answers
Answer:
it was increase
Explanation:
What is the term for a female reproductive cell?
sperm
egg
tetrad
embryo
Answers
Answer:
Second choice; egg
Explanation:
Gametes are an organism's reproductive cells.
- Female gametes are called ova or egg cells
- Male gametes are called sperm
A tetrad consists of four chromatids, and a chromatid is one half of a duplicated chromosome.
An embryo is an unborn offspring (child) developing.
Answer:
Egg
Explanation:
The egg also known as ovum is the female reproductive cell.
is at the heart of the scientific process. it can assist with everything from determining a good scientific question to allowing others to examine and
Answers
The process of peer review is at the heart of the scientific process. It plays a crucial role in ensuring the quality and integrity of scientific research. Peer review involves the evaluation of research papers by experts in the relevant field before they are published.
This rigorous evaluation process helps to validate the research methodology, results, and conclusions, and ensures that the work meets the standards of scientific excellence.
Peer review serves several important purposes. It helps identify and correct errors or flaws in the research, improves the clarity and effectiveness of the paper, and provides constructive feedback to the authors for further improvement.
Additionally, peer review allows other researchers and the scientific community to assess the validity and reliability of the findings, and potentially replicate the study to confirm its results.
By subjecting research to the scrutiny of experts, peer review enhances the credibility and trustworthiness of scientific knowledge, fosters scientific discourse, and promotes the advancement of science as a collaborative and self-correcting endeavor.
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Which of the following CANNOT occur during a chemical reaction? Select one: a. New atoms can be made. b. Bonds between atoms can be broken. c. New molecules can be made. d. Bonds between atoms can be formed.
Answers
The chemical reaction cannot occur during option a. New atoms can be made.
During a chemical reaction, atoms are rearranged and combined to form new molecules, but new atoms cannot be created or destroyed in the process. This concept is known as the law of conservation of mass, which states that the total mass of the reactants in a chemical reaction is equal to the total mass of the products.
Chemical reactions involve the breaking and formation of chemical bonds between atoms. Bonds between atoms can be broken, allowing the atoms to separate from each other. This requires an input of energy, which can come from various sources such as heat, light, or the presence of a catalyst. Similarly, new bonds can be formed between atoms, resulting in the creation of new molecules.
The rearrangement of atoms and the formation of new bonds in a chemical reaction occur due to the interactions between electrons in the outermost energy levels of the atoms. These interactions involve the sharing, donating, or accepting of electrons, leading to the formation of stable chemical compounds. Therefore, the correct answer is option a.
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Guided Video Tour: Unequal reproductive success leads to natural selection Part B ch.7 key concepts A. a random mutation gives a bacterium resistance to an antibiotic b. when the antibiotic is introduced, the environment changes c. only a few bacteria survive exposure to the antibiotic including the one with resistance d. the bacteria that survived exposure to the antibiotic reproduce e. the population changes over time as bacteria resistant to the antibiotic out-compete the non-resistant bacteria
Answers
The concept described in the question is natural selection, which is a key mechanism in evolution.
Natural selection occurs when certain traits give an organism a better chance of surviving and reproducing in a particular environment. In the given scenario, the random mutation that gave a bacterium resistance to an antibiotic was the initial variation that allowed for natural selection to take place.
When the antibiotic was introduced, the environment changed and only a few bacteria survived exposure, including the one with resistance. This created a selective pressure that favored the bacteria with resistance over those without.
As the resistant bacteria reproduced, they passed on their advantageous trait to their offspring, which over time resulted in a change in the population as resistant bacteria out-competed the non-resistant ones. This process of natural selection can occur in any organism, leading to changes in their populations over time.
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How much is DNA important to identify a group? Give a brief explanation on race ,whiteness and property? Does biological anthropologists and genome scientist need to add the relation between Europeans and Indigenous people while doing their research?
Answers
DNA is important in identifying genetic relationships within a group, but it alone is not sufficient to determine complex social constructs like race, whiteness, or property; the inclusion of social, cultural, and historical factors is crucial in understanding these concepts.
Biological anthropologists and genome scientists should consider the relationship between Europeans and Indigenous people in their research to provide a more comprehensive understanding of human genetic diversity and population history.
DNA analysis can provide valuable insights into genetic relationships within a group, such as determining genetic ancestry or identifying related individuals. However, race, whiteness, and property are social constructs that go beyond genetic factors and are shaped by historical, cultural, and socioeconomic factors. These concepts are complex and cannot be solely explained by genetic data. Therefore, it is important for researchers, including biological anthropologists and genome scientists, to recognize the limitations of genetic data and consider the broader social context when studying race, whiteness, and property.
In the context of researching Europeans and Indigenous people, it is crucial for researchers to acknowledge and incorporate the historical and ongoing relationships between these groups. This includes understanding colonization, displacement, and the impact of power dynamics on genetic diversity and health outcomes. By including this relationship in their research, scientists can contribute to a more accurate and nuanced understanding of human genetics and promote social and scientific equity.
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The Threatened Specie Act prohibit trade or product made from threatened or endangered pecie. True
Fale
Answers
The given statement is TRUE. A foundation for the conservation and protection of threatened species and endangered species, as well as their habitats, both domestically and overseas, is provided under the Endangered Species Act of 1973.
In accordance with ESA, critical habitat must be identified and its removal is forbidden. The Endangered Species Act establishes protections for fish, mammals, and plants that are categorized as threatened or endangered. It allows for the addition and deletion of species from the list of threatened and endangered species as well as the creation and implementation of recovery plans. A threatened species is one that "is likely to become an endangered species within the foreseeable future throughout all or a considerable portion of its range," according to the ESA.
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1-22 colors and 2 math problems.
Answers
Identify Organelles in an Animal Cell
Answers
Answer:
A- Nucleus
B- Lysosome
C- Ribosomes
D - Centrioles
Explanation:
Got it right on edge2021
The cell organelles in an animal cell are Label A: Nucleus, Label B: Lysosome Label C: Ribosomes, and Label D: Centrioles.
Digestive enzymes found in lysosomes break down waste products from cells as well as foreign objects. They are essential for the recycling of cellular parts and preserving cellular homeostasis.
Ribosomes can be found either bound to the endoplasmic reticulum or floating freely in the cytoplasm. They interpret the messenger RNA (mRNA)-encoded genetic instructions and produce proteins in accordance.
Centrioles are essential for the development of the mitotic spindle, which helps separate the chromosomes during cell division.
Additionally, they play a role in the development of cilia and flagella, which are critical for some cell types' ability to move and perform sensory tasks.
Thus, the answers are nucleus, lysosome, ribosome, and centriole respectively.
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what is the segment of dna that contains information to synthesize a specific protein molecule?
Answers
Genes are the segment of DNA that contain the information to synthesize a specific protein molecule.
DNA stands for Deoxyribonucleic Acid. It is the genetic material that contains the information for the synthesis of various type of proteins that give an organism several trait. DNA structure is composed of two strands present in a helical form.
Protein is the biopolymer composed of amino acids as the monomer. It is the functional form of genes that perform various functions inside the living body. These functions include transport, enzymes, signaling, structural, etc. Proteins can be of two types based on their structure: fibrous and globular.
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which of the following is not part of the molecular level?
water
CO2
carbon
table salt
Answers
Answer:
Table salt is not part of the molecular level
Explanation:
It's just an opinion of mine ☺️
5. Which of the followings describes best the meaning of the word "musculus" in latin? A) Little hamster B) Little rabbit C) Moving hamster D) Moving mouse E) Little Mouse 6. Which of the followings cannot be among the main functions of muscle tissue? A) Production of traction B) Production of heat C) Stability of joints D) Supporting of the body E) Stabilizing spine by pushing bones 7. Which of the followings is correct about skeletal muscle fibres? A) Each skeletal muscle fibres include single nucleus B) Skeletal muscle fibres are branched as cardiac muscle fibers C) Endomisium can lead pus spread as well as fluids D) Bigger the size of muscle more the number of nucleus E) There is no organic relation with shape and function of a muscle
Answers
5. The correct option is E. Little mouse describes best the meaning of the word "musculus" in Latin.The word musculus is a Latin term that means "little mouse." The term is used to refer to the muscle because it is small and cord-like, just like a mouse's tail.
6. The correct option is E. Stabilizing spine by pushing bones cannot be among the main functions of muscle tissue.The muscle tissue has four primary functions, including stability of joints, production of heat, supporting the body, and production of traction. However, stabilizing the spine by pushing bones is not among the primary functions of muscle tissue
.7. The correct option is A. Each skeletal muscle fiber includes a single nucleus. Hence, option A is correct.Skeletal muscle fibers are multinucleated, which means they contain many nuclei and are cylindrical. Skeletal muscles make up about 40% of the body's weight and are responsible for controlling voluntary movements. Each skeletal muscle fiber includes many nuclei, and the nuclei are located in the periphery of the cell. The correct option is A. Each skeletal muscle fiber includes a single nucleus.
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Climate change could impact many species from which we get useful products. what resources do we risk losing due to climate change? a. paper b. all of these c. food d. painkillers
Answers
we risk losing due to climate change is food. Thus option C is correct.
What are the impact of climate change on species ?
Climate is the crucial factor for all living organism, as it determine whether an organism is going to survive or not.
Global warming is one of the major factor resulted from release of green house gases.
It leads to habitat loss, change the migration capabilities, alter the competitive relationships.
The fate of the species completely depend on climate change, those who are able to move new area with new climatic condition they will meet their physical, biological, and climatic needs.
Thus option C is correct.
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Molecularly, a gene is an organized unit of blank______ sequences that can be transcribed into rna.
Answers
Molecularly, a gene is an organized unit of DNA sequences that can be transcribed into RNA.
The general laboratory technique of determining a DNA molecule's exact sequence of nucleotides, or bases, the exact sequence of nucleotides, or bases, in a DNA molecule is referred to as DNA sequencing. The bases' sequence (often referred to by the first letters of their chemical names: A, T, C, and G) encrypts the biological material used by cells to develop and function.
Deoxyribonucleic acid (DNA) is a polymer made up of two polynucleotide chains that coil around one another to form a double helix. The polymer contains genetic instructions for all known organisms and viruses' development, functioning, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid.
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what happens to the muscles of people with marfan syndrome
Answers
Answer:
Muscle fatigue is often reported by patients with Marfan syndrome although myopathy is not classically considered a component of Marfan syndrome [1, 2, 4, 6, 7]. In addition to apparent muscle underdevelopment, some patients report myalgia or cramps suggesting skeletal muscle involvement.
what is white-tailed deer?
Answers
Tan or brown in the summer and grayish brown in the winter describe the white-tailed deer.
The neck, the area surrounding the eyes and nose, the stomach, and the underside of the tail are all white on white-tailed deer. Having antlers is a masculine. The weight range for men and women is 90 to 200 pounds for men and 150 to 300 pounds for women. The tail, which is white below and brown on top, is the most prominent characteristic.
In the Nearctic and Neotropical zones, white-tailed deer are native. Except for a small area of the west central states up to the California coast, they are found throughout the majority of southern Canada and the entire American continent. Bolivia is included in their range, which spans Central America.
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f-18 undergoes positron decay. what is the product nucleus? enter your answer using the same format, i.e, symbol-mass number [a]
Answers
The product nucleus of F-18 undergoing positron decay is O-18.
Positron decay is a type of radioactive decay in which a positron (a positively charged electron) is emitted from the nucleus. In this process, the atomic number of the nucleus decreases by 1, while the mass number remains the same.
F-18 has an atomic number of 9 and a mass number of 18. When it undergoes positron decay, a positron is emitted from the nucleus, and one of the protons in the nucleus is converted into a neutron. This results in the formation of a new nucleus with an atomic number of 8 and a mass number of 18.
The element with an atomic number of 8 is oxygen, so the product nucleus of F-18 undergoing positron decay is O-18.
Therefore, the answer is O-18 [18].
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Jurassic Park High School is testing the effect of a new book bag policy on tardiness to classrooms. Selected
classes like English, Arts and Humanities, and Science classes would allow book bags and others would restrict
them. Data on the number of students tardy to classes will be collected in both groups and analyzed.
Traditionally, book bags were not allowed into classroom
Answers
this process results in the biological breakdown of most of the organic matter in the sewage. responses
Answers
This process results in the biological breakdown of most of the organic matter in the sewage responses known as biological treatment
The biological breakdown of organic matter is a crucial step in the treatment process, which is typically achieved through the use of microorganisms such as bacteria and protozoa. During this process, these microorganisms break down the organic matter in the sewage, converting it into simpler compounds that can be removed from the water, this process is known as biological treatment, and it is an essential step in ensuring that wastewater is safe to release into the environment.
By removing most of the organic matter from the sewage, the water becomes less polluted, reducing the risk of environmental contamination and protecting public health. Overall, the biological breakdown of organic matter is a crucial part of sewage treatment, helping to ensure that wastewater is safely and effectively treated before it is released into the environment.
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You run a digestion using BglII (pronounced "bagel two"), which cuts using the restriction site seen above. The digestion is on a plasmid 4 kilobases (kb) in size. There are two BglII sites on the plasmid, splitting the plasmid into two pieces, one 3 kb in size (the backbone) and one 1 kb in size (the insert). You then add a new lkb insert, and perform the ligation reaction. When you run the gel post-ligation, you get the result to the right, with the ladder shown on the left lane. You are sure there is no contamination. Explain each of the 5 bands in the gel. State the size of each band (e.g. 1 kb) followed by a short, 1-2 sentence description of what the band represents (e.g. the insert)
Answers
Starting from the bottom of the gel:
2 kb band: This band represents the original 3 kb backbone of the plasmid after it has been digested with BglII. Since the BglII restriction site is between 2 kb and 3 kb, the digestion will remove 1 kb from the original 4 kb plasmid.3 kb band: This band represents the ligation product of the 2 kb band with the new 1 kb insert. The ligation reaction re-joins the 3 kb backbone and the 1 kb insert to form a new plasmid of 4 kb.4 kb band: This band represents the new, complete plasmid that has not been cut by the BglII enzyme. It migrated to the top of the gel because it is the largest.1 kb band: This band represents the new 1 kb insert that has not been ligated to the backbone. This can occur if the ligation reaction is not efficient enough or if the insert is in excess, resulting in self-ligation.Smear: This smear represents incomplete digestion of the plasmid by BglII, resulting in fragments of various sizes. This can occur due to incomplete digestion or degradation of the DNA during the purification process.BglII is a type II restriction enzyme that recognizes the DNA sequence AGATCT and cuts between the G and the A nucleotides, producing "sticky ends" that can be used for DNA ligation. It is commonly used in molecular biology to cut DNA at specific sites for cloning or other manipulations.
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Vitamin A is a relatively small, lipid-soluble molecule that can behave as a hormone. Most likely its receptor
A. Is an ion channel receptor
B. Is a protein kinase receptor
C. Involves a G protein
D. Is not connected to the plasma membrane
E. Does not exist; vitamin A does not have a receptor
Answers
Vitamin A is a relatively small, lipid-soluble molecule that can behave as a hormone. Most likely its receptor involves a G protein.
What is Vitamin A?
Vitamin A is a crucial nutrient that is beneficial to human eyesight, a healthy immune system, and cell growth. It is known for promoting healthy vision, skin, and mucous membranes. Vitamin A Receptor: Vitamin A receptor is a type of nuclear receptor protein, it is a zinc-finger transcription factor.
Vitamin A receptor is a mediator of retinoid signals, which are in charge of regulating biological processes such as development, cell differentiation, and homeostasis. Vitamin A receptor binds the retinoic acid, which can modify the DNA transcriptional activity.
The receptor most likely to be involved in Vitamin A is a G protein. Lipid-soluble hormones are hormones that can diffuse into the cells. They bind to receptors inside the cells, which can then modify gene expression to produce a response.
G protein-coupled receptors are transmembrane receptors that are bound to a G protein. G proteins are a family of proteins that are activated by G protein-coupled receptors. They interact with effector proteins to produce second messengers. As a result, the response is sent via intracellular signaling pathways.
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HELP ASAPPP PLEASEEEEE
Answers
The birth rate was greater than the death rate and the immigration rate was greater than the emigration rate. Options B and D are correct.
Population growthFrom the illustrated image, the world experienced an upward growth in population between 1950 and 2010.
In order for population growth to occur:
the birth rate must exceed the death rateimmigration must exceed emigrationEither or both of the above conditions will lead to a growth in the population.
Thus, options B and D are correct.
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The birth rate was greater than the death rate. Option B
What happened from 1950 to 2010?We know that population refers to the total number of individual species that are present in a locality at a given time. Now we can see from the graph that the population appears to grow from 1950 to 2010.
Since the population was growing, it then follows that the birth rate was greater than the death rate. Option B
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2 days after a call you realize you forgot to docuent that you checked a pts blood glucoise prior to him refusing transfer and signing refusal form you should?
Answers
Accurate and timely documentation is essential for maintaining patient safety and ensuring continuity of care.
If you realize that you forgot to document that you checked a patient's blood glucose prior to them refusing transfer and signing a refusal form, there are a few steps you should take:
1. Review your organization's policies and protocols regarding documentation. Make sure you understand the requirements for documenting patient care accurately and timely.
2. Consult with your supervisor or a more experienced colleague. They can provide guidance on the best course of action based on your organization's policies.
3. If necessary, inform the relevant healthcare provider who is responsible for the patient's care. This could be the patient's primary care physician, a nurse practitioner, or another appropriate healthcare professional.
4. Document the missed documentation in the patient's record as soon as possible. Be sure to include the date and time of the original incident, as well as a brief explanation of why the documentation was missed.
5. Take steps to prevent similar mistakes in the future. This may involve implementing reminders or double-checking procedures to ensure all necessary documentation is completed promptly.
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Which of the following are TRUE about male internal genitalia?Select one or more:a. The epididymis, located between seminiferous tubules and the vas deferens, is where sperm cells mature.b. The seminiferous tubules are where sperm cells are produced.c. The Sertoli cells, also known as nurse cells, promote development of sperm cellsd. Testes normally do not descend from the abdominal cavity into the groin area until pubertye. The tunica albuginea is the stretchable covering of the scrotumf. The testes are connected to the inside of the body by the spermatic cord.
Answers
a, b, c, d, and f are TRUE about male internal genitalia.
a. The epididymis, located between seminiferous tubules and the vas deferens, is where sperm cells mature.
b. The seminiferous tubules are where sperm cells are produced.
c. The Sertoli cells, also known as nurse cells, promote development of sperm cells.
d. Testes normally do not descend from the abdominal cavity into the groin area until puberty.
f. The testes are connected to the inside of the body by the spermatic cord.
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Prokaryotic and eukaryotic in common
Answers
In here what's the meaning of
places a strain ?
Answers
Answer:
In this passage, I'm kinda sure that places a strain means pressure.
All cells are contained within a membrane called the:
A. Cell wall
B. Cytoplasm bilayer
C. Cytosol
D. Phospholipid bilayer
Answers
Answer:
Phospholipid bilayer
Explanation:
That is essentially the primary componenent of the cell membrane where phospholipids form two layers.
In which phase are these cancer cells stuck mitosis or interphase? Explain how u know by referring to what happens in each phase.
Answers
During interphase, cells grow, replicate their DNA, and prepare for cell division. During mitosis, the replicated DNA is divided into two identical sets, and the cell divides into two daughter cells.
Cancer cells can have defects in their DNA replication and cell division processes, which can cause them to divide uncontrollably and form tumors. However, the specific phase of the cell cycle in which cancer cells get stuck can vary depending on the type and stage of cancer.
In some cases, cancer cells may progress through the cell cycle faster than normal cells and get stuck in the mitotic phase, while in other cases, they may have defects in the G1 or G2 phases of interphase.
Therefore, In interphase cancer cells stuck mitosis or interphase.
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