When we have a factor that always causes a disease and also demonstrates that the disease cannot occur without that factor, we say that it is ____? hint: this situation does not occur in reality. necessary and sufficient necessary but not sufficient sufficient but not necessary neither sufficient nor necessary?

Answers

Answer 1
Answer: necessary and sufficient

When we have a factor, it will always cause a disease. This sentence shows that the factor is sufficient. If you have the factor, you will have the disease.
The disease cannot occur without that factor. This sentence shows that the factor is necessary. If you don't have the factor, you will not have the disease.

Related Questions

A client is admitted to an acute care facility with complications of celiac disease. which question should be helpful initially in obtaining information for the nursing care plan?

Answers

The answer would be: "What is your understanding of celiac disease?"

Celiac disease is one of the allergic/autoimmune diseases that need a good education to prevent recurrence. Before giving information about the disease, the nurse should obtain what information about the disease that they already know.

Which statement best distinguishes meiosis from mitosis?

A. Meiosis replicates then separate genetic information.
B. Meiosis combines the genetic information of egg and sperm
C. Meiosis maintains the cell’s original chromosome number.
D. Meiosis reduces the cell’s original chromosome number by half.

Answers

The answer is D because at the end of meiosis, the cell should have half the amount of chromosomes needed
B is the best statement that describes meiosis from mitosis

Sweetened beverages supply nearly half of all the added sugars consumed by americans. true or false

Answers

The answer to this question is True. Sweetened beverages supply nearly half of the added sugars consumed by Americans.

People with central-body obesity are more likely to develop _____ than people who do not have excess fat in the midsection of their bodies.
a. beriberi
b. iron-deficiency anemia
c. elevated hdl cholesterol
d. type 2 diabetes

Answers

The answer is b.

~~~~~~~~~~~~~~~~~~~~~~~


People with central body obesity are more likely to develop iron-deficiency anemia than people who do not have excess fat in the mid section of their bodies.


Hope it helped you.

-Charlie

Which of these choices is a drawback of the clean water act ?
A. It targets point sources pollution
B. It targets non point source pollution
C. It excludes agriculture runoff
D. It excludes lakes rivers and streams

Answers

It excludes agricultural runoff

Answer:

the answer is C

Explanation:

Which drug is used as a rescue from toxicity of methotrexate?

Answers

folic acid can be used to reduce the toxicity of methotrexate

What conditions are necessary for viewing a rainbow in the sky?

Answers

Sunlight and Humid Weather

Will an increase in water temp damage aquarium plants

Answers

Yes,
plants have a thermal death point

A small segment of dna on the template strand contains the base sequence cgt. if an mrna transcript is made that includes this sequence, what would be the anticodon on the trna that would bind to this corresponding mrna sequence

Answers

If the DNA segment is CGT then the MRNA segment would translate to GCA making the TRNA anticodon to be CGU

A major oil spill has just happened in a near-shore environment. What prediction could be made as to why an oil spill in this area would be much more dangerous to marine life than one in the open ocean?

Answers

Well now not only are you killing less aqua animals. But as well as you are affecting less drinking water. But the main town supply of fish and water come from there, thus making it dangerous and hazardous after being infected.
Hope this helps

Answer:

An oil spill happening near the shore would be more dangerous because now not only is aquatic life in danger so are humans, in the sense of them swimming in the oil and possibly ingesting it. which would cause poisoning and could potentially lead to death.

Explanation:

the __________ guards the entry of food into the stomach.

Answers

The cardiac sphincter which is found at the upper part of the stomach guards the entry of food into the stomach. Cardiac sphincter performs essential roles in digestion as it keeps stomach acids and other stomach contents from pushing up and into the esophagus.






The development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of

Answers

For the answer to the question above,
the development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of "differentiation"

It is the process where a cell changes from one cell type to another.

The development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of the differentiation process.

What is Embryo?

An unborn baby at an early stage of development in the uterus is called an embryo. It is responsible for the development of simple to complex structures in the body of multicellular organisms.

Differentiation is a process of the generation of specialized cell types and organs in multicellular organisms. During this process, a cell ceases to divide and develops specialized structural elements and distinct functional properties.

Therefore, the development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of the differentiation process.

To learn more about the Development of Embryo, refer to the link:

https://brainly.com/question/1165279

A group of cells living together, where all cells can carry out all necessary functions of life.

Answers

sorry but this is not a question

Polarity of bonds and molecules is determined by the ______________ of the atoms involved.

Answers

Symmetry of the atoms

Explanation:

Polarity is defined as the formation of opposite charges on the atoms of a compound due to the difference in their electronegativities.

For example, in a HCl molecule chlorine is more electronegative in nature as compared to the hydrogen atom.

Hence, chlorine will attract the valence electron of hydrogen atom more towards itself. Due to this a partial positive charge will develop on hydrogen atom and a partial negative charge will develop on the chlorine atom.

Thus, we can conclude that polarity of bonds and molecules is determined by the difference in electronegativity of the atoms involved.

Which of these organelles is present in both prokaryotic cells and eukaryotic cells?

Answers

A cell wall, cell membrane, ribosomes, cytoplasm 

Ribosomes are organelles present in both prokaryotic and eukaryotic cells. They are essential for protein synthesis. Unlike other organelles, ribosomes can function without a membrane, making them universal across all cell types.

The correct answer to the question about which organelle is present in both prokaryotic cells and eukaryotic cells is the ribosome. Ribosomes are essential for protein synthesis and are found in both prokaryotic and eukaryotic cells. While eukaryotic cells contain membrane-bound organelles like the nucleus and mitochondria, prokaryotic cells do not. However, both types of cells share the presence of ribosomes for translating mRNA into proteins.

Here are the important points to remember:

Nucleus: Only in eukaryotesMitochondrion: Only in eukaryotesVacuole: Typically in plant and fungal cells, not in prokaryotesRibosomes: Present in both prokaryotes and eukaryotes

Ribosomes are not surrounded by a membrane and function as the site of protein synthesis, essentially translating genetic information into functional proteins. This makes them a universal and crucial component of all living cells, regardless of whether they are prokaryotic or eukaryotic.

Two students are planning an experiment that will test how planaria (aquatic flatworms) respond to different environments. They will conduct two investigations—one that tests the worms’ responses to different water temperatures and one that tests the worms’ responses to different levels of acidity. Student 1 wants to buy two groups of flatworms and use a different group for each investigation. Student 2 thinks the same group of worms should be used for both investigations. Do you think either student’s method would give more accurate results? Why or why not? Explain your response.

Answers

Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.


Student 1 is taking  different groups of worms, so his result will be more accurate, because the same group of worms may show the same or more related result.

What is a flatworm?

Flatworms came under phylum platyhelminths.

They are unsegmented, bilateral, and soft bodied organism.

In the given experiment, the student 2 is taking the same group of flatworm, which may have some same characteristics and response to stimuli.

The result can be not ideal.

The student 1 is taking different groups of flatworm.

It will show correct and distinctive result.

Thus, student 1 will show accurate result.

Learn more about Planaria

https://brainly.com/question/17846500

If one species is split into two populations in two different places, natural selection may drive them to become two different species. how?

Answers

They are isolated and adapting to two different environments

Vessel that transports deoxygenated blood from lower parts of the body returns to the right atrium via the

Answers

The inferior vena cava brings deoxygenated blood back into the heart from the lower body. For comparison, the part that directs deoxygenated blood from the upper body is the superior vena cava.

What would be a major sign of overtraining? change in appetite decrease performance loss of motivation and vigor disturbed sleep?

Answers

Answer: decrease performance

 By overtraining, we mean doing more work than what is physically tolerated. Change in appetite,  decrease performance,  loss of motivation and vigor, and disturbed sleep are among the symptoms of overtraining. Among the four, the major sign of overtraining is decrease performance.

 

The picture shows the transport of sodium and potassium ions.The picture shows an Na+/K+ ATPase pump. What is a CORRECT interpretation of the picture? A) The picture shows a passive transport of sodium and potassium ions. B) Potassium ions are moved out of the cell and sodium ions are moved in. C) The energy for the action of the pump is released by the utilization of ATP. D) The binding of the Na+ ions changes the conformation of the lipid bilayer.

Answers

Looking at the attached diagram i believe, the answer for the above question is C. The energy for the action of the pump is released by the utilization of ATP. 
The process of moving sodium and potassium ions across the cell membrane is an active transport process which involves the hydrolysis of ATP to provide the necessary energy. This is catalyzed by the enzyme  Na+/K+ -ATPase. 
the answer is C. The energy for the action of the pump is released by the utilization of ATP.

At chemical synapses, _________ primarily dictates the postsynaptic response.

Answers

At chemical synapses, neurotransmitter primarily dictates the postsynaptic response. Chemical synapses are biological junctions between neurons (or neuron and effector cell) which help them communicate and control other functions in the body.   At a chemical synapse, the presynaptic neuron releases neurotransmitter from its the synaptic vesicles (by exocytosis) into the synaptic cleft. Neurotransmitter binds to its receptors on the postsynaptic cell and achieves its effect. After this event, neurotransmitters must be cleared from the synapse via enzymatic degradation or re-uptake by specific transporters (to terminate the action of the transmitter).

During the follicular phase, granulosa cells secrete ________, which stimulates secretion of ________.

Answers

 During the follicular phase, granulosa cells secrete estrogen, which stimulates secretion of gonadotropin-releasing hormone (GnRH), which then increases production of luteinizing hormone (LH). The follicular phase is the phase of the menstrual cycle, during which follicles in the ovary mature and it ends with ovulation.

During the follicular phase, granulosa cells secrete estrogen which stimulates the secretion of gonadotropins such as FSH and LH.

During the follicular phase, granulosa cells secrete estrogen, which stimulates the secretion of gonadotropins by the anterior pituitary gland. Specifically, Follicle-stimulating hormone (FSH) stimulates the follicles leading to their growth and secretion of estrogens. Granulosa and theca cells, upon receiving Luteinizing hormone (LH), produce the sex steroid hormone estradiol. This increase in estrogen levels results in a negative feedback loop that regulates the secretion of GnRH, FSH, and LH to optimize the chances of one dominant follicle reaching maturation and ovulating an egg cell.

The two processes that determine the world's current biodiversity are

Answers

extinction and speciation rates.

Final answer:

Biodiversity is shaped by two key evolutionary processes: speciation, which creates new species, and extinction, which removes species. The balance and fluctuations between these processes determine the rise and fall of biodiversity levels over time.

Explanation:

The two evolutionary processes that determine the world's current biodiversity are speciation and extinction. These processes serve as the 'birth' and 'death' of species, contributing to the dynamic nature of biodiversity throughout geological time. When the rate of speciation exceeds that of extinction, biodiversity increases, and conversely, it decreases when extinction rates are higher. These fluctuations are evident from the fossil record and have led to dramatic changes in biodiversity over Earth's history.

Liquids that do not mix form into layers when they have __________ densities.

Answers

Liquids that do not mix form into layers when they have different densities. These types of liquids are called immiscible. Depending on how many types of liquids are mixed, they can form two or more layers. A good example of this would be oil and water. Because their densities are different they do not mix well. 

Answer:

different

Explanation:

earths biosphere is

Answers

The biosphere is one of four layers that surround the earth along with rock, Water and air.
the biosphere is the living part of the earth such as animals trees and plants 

Alcohol abuse may result in wernicke-korsakoff syndrome, which is characterized by the inability to learn from experience and

Answers

Alcohol abuse may result in wernicke-korsakoff syndrome, which is characterized by the inability to learn from experience and custodial care in some cases. Wernicke-Korsakoff syndrome (WKS) is a type of brain disorder and a combination of two separate conditions (Wernicke’s disease and Korsakoff syndrome) that occurs at the same time. Alcoholism is the most common cause of WKS. Other causes include lack of vitamin B-1, or thiamine.






Many clinicians diagnose disorders by using criteria listed in the

Answers

Many clinicians diagnose disorders by using criteria listed in the DSM-5. The DSM-5 is the abbreviations for the diagnostic and statistical manual of mental disorders, it is the handbook used by the healthcare professionals as the guide to the diagnosis of mental disorders. It contains descriptions, symptoms, and other criteria for diagnosing mental disorders. 

Cell-mediated immunity differs from humoral immunity in that _____. view available hint(s) cell-mediated immunity differs from humoral immunity in that _____. they respond differently to invaders cell-mediated immunity is longer lasting a humoral response is mounted more quickly a subsequent secondary immune response can occur in humoral immunity clonal selection occurs only in cell-mediated immunity

Answers

The cell-mediated immunity differs from humoral immunity in that they respond differently to invaders. The cell mediated immunity is a type of immune response that dose not involve antibodies, however it involves the activation of phagocytes, antigen specific cytotoxic T-lymphocytes, and the release of various cytokines in response to a foreign body (antigen). The humoral immune response is mediated by antibody molecules that are secreted by plasma cells. 
Final answer:

Cell-mediated immunity involves T cells attacking infected cells, while humoral immunity involves B cells and antibodies targeting extracellular pathogens. Humoral immunity has memory cells for quicker secondary responses.

Explanation:

Cell-mediated immunity differs from humoral immunity in that it involves T cells which directly attack and destroy infected or cancerous cells within the body. This type of immunity focuses on intracellular pathogens that have already entered cells. The humoral immune response primarily involves B cells and the production of antibodies to target pathogens in extracellular spaces, such as the bloodstream and lymph system. Unlike cell-mediated immunity, humoral immunity features memory cells that can promptly respond to subsequent exposures to the same pathogen. Notably, both types of immunity can have long-lasting protective effects, but they employ different mechanisms and have different response times.

What would happen to owls if the grass was sprayed with an insecticide?
Keep in mind the owls eat the mice that eat the insects that eat the grass

Answers

If the grass was sprayed with insecticide it would start to kill the insects which means that the mice now have less food and would start to die causing the owls to have less food since the mice would starting dying also since their food source is depleting.
the owl would barely have any food source cause the mice eat the insects which eats the grass and the grass kills the insects therefore the mice wouldn't have any food so the mice dies then the owls will have no food well i mean they would but if you take one animal off the food web it can mess up the entire food web

What is the cause of inflammation of the respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli of the lungs?

Answers

The causes is smoking. I don't like smoking. But it is what peeps do all the time and they destroy their lungs. it becomes inflammed.

Answer:

    There is not just one type of respiratory infection, but several infections that can reach the respiratory tract, some lighter and some more severe. Some of the most common causes of respiratory infections include:

Common Cold or Flu: It is an infection caused by viruses, causing cough, runny nose, sneezing and nasal obstruction. In influenza, there is infection with influenza viruses, which cause more intense symptoms such as body pain and fever.Sinusitis: is the infection caused in the bones of the face and can cause headache, facial pain, nasal discharge, cough and fever, caused by viruses, bacteria or fungi;Pharyngitis: There is infection of the throat region, causing local inflammation, as well as runny nose and cough, most often caused by viruses;Tonsillitis: pharyngitis may be accompanied by tonsil infections, causing intense inflammation, being more intense when there is infection by bacteria, which can produce pus in the region;Bronchitis: is the inflammation of the bronchi, already considered a low respiratory infection, since it already reaches the lungs. It causes coughing and shortness of breath and may have both allergic and infectious causes from viruses or bacteria.Pneumonia: It is the infection of the lungs and pulmonary alveoli, which can cause intense secretion, cough, shortness of breath and fever. It is usually caused by bacteria, it can also be caused by viruses or fungi;Tuberculosis: This is a type of lung infection caused by the bacterium of Koch bacillus, which causes chronic, gradual inflammation with cough, fever, weight loss and weakness, which can become severe if treatment is not done promptly.

    These infections can be classified as acute when they appear suddenly and rapidly worsen, or as chronic when they have a long lasting, sluggish course and difficult to treat, which often happens in certain cases of sinusitis, bronchitis or tuberculosis. , for example.

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In an effort to control a total institution and to create a community of sameness, inmates are forced to strip down, be searched by police officers, and given identical uniforms before entering prison. this is an example of All of the following prefixes mean against or opposite except _____. anti ante ant The hemoglobin precursor that accumulates in iron-deficiency is Sal scored g goals this season. Ben has scored four times as many goals as Sal. Chun has scored three fewer goals than Ben. a. 9g - 3 c. 3g - 9 b. g - 4g d. 3g + 9 Which statement describes if there is an extraneous solution to the equation x-3 = x-5? A. there are no solutions to the equation, B. the extraneous solution is x = 7, C. the valid solutions are x = 7 and x = 4, or D. the extraneous solution is x = 4 With no options, ____ displays the current listing of bash environment and shell script variables. Which perspective is reflected by a parent who teaches a child about the role of sexual norms in stabilizing the family? The center of the inscribed circle of Triangle ABC is point , and the center of the circumscribed circle of Triagnle ABC is point . 8% of what is 2.8?? HELP!!!!!! THIS IS GEOMETRY!Find the perimeter of the shape below:A four sided figure RSTU is shown. R is located at negative 1, 3. S is located at negative 2, 7. T is located at 2, 5. U is located at negative 1, 5 The coordinates of an ordered pair have opposite signs. In which quadrant(s) must the ordered pair lie? Explain. Helpp me graph thesse on a scatter plot sooo confused eee!! @musiclover helpp plzz lol Early changes in the brain during exposure to addictive drugs involves the insertion of ________ receptors into neuron membranes located within the ________. 1. Conduct a minimum of a five-paragraph research paper on a clear and specific topic covered in World History 1 second semester. Your paper should include a proper introduction, with a thesis statement, 3 body paragraphs and conclusion. Body paragraphs will consist of thesis statements supported with details/evidence from research. You will conclude your assignment with a works cited page listing no less than three proper sources 6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 147 of the first 156 customers have not received a star on their receipts. What is experimental probability of winning a free gallon of milk? A. 11/156 B. 49/52 C. 2/39 D. 3/52*****? every time a boy visited his grandfather, he would pass a house with a large dog in the yard that would bark and scare the boy. years later, the boy becomes anxious whenever he visits his grandfather, even though the dog is no longer there. the boy learned to become anxious in this situation through which process? Up to what percentage of anorexia patients commit suicide or die from cardiac arrest associated with malnutrition? Little 2-year-old dennis is always getting into things. he climbs up trees, jumps into lakes, and explores strange boxes. according to research, dennis would be considered ________. (1 point) what is 231 scaled down by a factor of 1/10 Rewrite the equation below in standard form 2/3x=-5/2y+2