what does prevalence mean

Answers

Answer 1

In epidemiology, prevalence is the percentage of a population that is discovered to be affected by a medical condition at a particular moment (usually a disease or a risk factor like smoking or seatbelt use).

The prevalence measures how many disease cases are present in a given population at any given moment. It is determined by comparing the proportion of those with the ailment to the overall population under study, and is typically expressed as a fraction, a percentage, or the proportion of instances per 10,000 or 100,000 individuals. Most frequently, questionnaire studies employ prevalence. Prevalence solutions "How many people are currently afflicted by this illness"?

To learn more about prevalence visit;

https://brainly.com/question/30773297

#SPJ4


Related Questions

What is method for treating mental disorders by mental rather than physical means?

Answers

Psychotherapy is the method for treating mental disorders by mental rather than physical means.

People in todays world suffer from number of mental disorders, which might have developed due to stress and anxiety or due to progressing age and declining mental activeness or maybe present since birth due to some defect in pregnancy.

The treatment of mental disorders by mental procedure is the most empathetic way of treating someone because it does not indulge any pain or shocks to the body which may make a patient unconscious. It involves caring talks which helps the clinician to identify the reason for mental instability. Psychotherapies include behavioral, cognitive, humanistic and holistic therapies which are used depending on the kind of symptoms displayed by the patient.

In psychotherapy, the emotions, actions and imaginations of the person as analyzed by hypnosis or some other mechanism which is used to relieve them.

Learn more about psychotherapy at:

brainly.com/question/2810067

#SPJ4

during the cardiac cycle

Answers

The heart experiences a sequence of activities that cause the periodic contraction and relaxation of its four chambers throughout the cardiac cycle.

A series of activities known as the cardiac cycle take place with each heartbeat. It involves the four heart chambers, which cooperate to pump blood throughout the body, contracting and relaxing rhythmically. Systole and diastole are the two phases that make up the cycle. Systole occurs when the heart muscle contracts, pumping blood from the ventricles into the arteries. The heart muscle relaxes and the chambers fill with blood during diastole. The sinoatrial (SA) node, the heart's natural pacemaker, generates electrical impulses that move through the heart's conduction system to control the cardiac cycle. The cycle is essential for ensuring that the body's tissues and organs receive enough blood. Any interference with the cardiac cycle might lead to

Learn more about cardiac cycle here:

https://brainly.com/question/14797546

#SPJ4

why is it normal for the third molar to be missing

Answers

Answer:

But the reality is, it's perfectly okay not to have these molars. According to the Dental Research Journal , it's estimated that anywhere from 5 to 37 percent of people are missing one or more of their third molars. The reason is unknown, but lack of these teeth could involve genetics.

Explanation:

Making decisions together with others can be easier because it allows you to __________.
A.
seek advice from others about the decision
B.
collaborate with others on various factors influencing the decision
C.
gain new perspectives about the decision
D.
all of the above


Please select the best answer from the choices provided.

A
B
C
D

Answers

Answer:D) All of the above

Explanation:

why kids should not run a mile

Answers

Answer: if children run to excess, problems can occur, including overuse injuries such as tendonitis and bone injuries, which may lead to arthritis and future growth complications.

What is the ICD-10 code for acute hyponatremia?

Answers

The ICD-10 code for acute hyponatremia is E87.1.

Hyponatremia is a medical condition characterized by low levels of sodium in the blood. Sodium is an important electrolyte that helps regulate the amount of water in and around cells, and low levels of sodium can disrupt this balance and cause cells to swell.

There are many possible causes of hyponatremia, including:

Excessive sweating or urination

Diarrhea or vomiting

Kidney disease

Heart failure

Liver disease

Hormonal imbalances

Certain medications

Symptoms of hyponatremia can range from mild to severe and may include:

Nausea and vomiting

Headache

Confusion or lethargy

Seizures

Coma

Treatment for hyponatremia depends on the underlying cause and severity of the condition. Mild cases of hyponatremia may be treated with fluid restriction, while more severe cases may require intravenous fluids or medications to increase sodium levels in the blood. It's important to treat hyponatremia promptly to avoid serious complications such as brain swelling or seizures.

To know more about hyponatremia here

https://brainly.com/question/28432747

#SPJ4

what is the adip/o medical term

Answers

Adip/o is a medical word that denotes fat or fatty tissue. It is frequently used in medical language to denote fat related illnesses or treatments such as liposuction or adiposity (high fatness) (surgical removal of fat)

Adipose tissue, commonly referred to as fatty tissue, is a unique type of connective tissue that serves largely as a fat-storage organ. It is composed of adipocytes, or fat cells, which, depending on the quantity of stored fat, can grow or contract. Although fatty tissue may be found all over the body, it is more prevalent in the abdomen, thighs, and buttocks. It is involved in the synthesis of hormones and cytokines and is crucial in controlling metabolism and preserving body temperature. However having too much fatty tissue can result in illnesses like obesity, diabetes, and heart disease.

Learn more about fatty tissue.here:

https://brainly.com/question/29368994

#SPJ4

what is depakote generic name?

Answers

Valproic acid is the generic name for Depakote. Absolutely, it is accurate. The brand name for a drug with valproic acid as its active component is Depakote.what is generic name

Depakote is a drug that is frequently prescribed to treat migraine headaches, bipolar disorder, and seizures. Its main component, valproic acid, which is also used to treat seizures and mood problems, works by altering certain brain chemicals Depakote comes in a number of dosage forms, including extended-release pills, capsules, and tablets. The individual's medical condition and other circumstances will affect the medication's dosage and frequency. Although Depakote can be a useful treatment for some medical disorders, it can also have unpleasant side effects like sleepiness, vertigo, and upset stomach. Rarely, it may result in more severe adverse effects such pancreatitis or liver damage problems should be brought up to a doctor as soon as possible

Learn more about Depakote here:

https://brainly.com/question/10713265

#SPJ4

what place is the chateau at brooklyn rehabilitation and nursing center?

Answers

The Chateau at Brooklyn Rehabilitation and Nursing Center is located in Brooklyn, New York.

It is a short-term and long-term care institution that provides medical, social, and recreational services in addition to physical, occupational, and speech therapy. The facility is built to offer the best standard of care, with an emphasis on the needs of the person and the development of skills required for community reintegration.

A group of skilled professionals, including registered nurses, physicians, and certified nursing assistants, work at the Chateau. Additionally, the institution provides social events including music, art, and amusement.

Every patient's demands are met at the Chateau by a sophisticated rehabilitation gym and a wide range of equipment. The staff collaborates closely with the patient's family to create a safe and enjoyable experience.

Regardless of a patient's condition, The Chateau at Brooklyn Rehabilitation and Nursing Center is committed to giving them the best treatment possible.

To learn more about Nursing visit:

https://brainly.com/question/28427575

#SPJ4

Electronic health records are a controversial topic in the health sciences. Why are they controversial? what are the advantages and disadvantages to electronic records over paper records?.

Answers

The utility for electronic health records as debatable since, while technologically modern and time-saving, they also have security flaws.

What exactly are digital health records?

A collection of different medical records created during any clinical interaction or incident is called as Electronic Health Record (EHR).The development of self-care and homecare technology has led to the ongoing generation of important healthcare data that are crucial for long-term therapeutic success.

What distinguishes an EMR from an EHR?

Both the 'EMR' (electronic medical record) & the 'EHR' (electronic health record) are digital records of medical information. An EMR is a digital form of a chart containing patient information saved in a computer.

To know more about Electronic health records visit :

https://brainly.com/question/18258345

#SPJ4

What is the size of badminton court for single?

Answers

The size of a badminton court for singles is 44 feet long and 17 feet wide (13.4 meters long and 5.18 meters wide).

The court is divided into two equal halves by a center line that is 2 inches wide. The net divides the court into two equal parts and is hung at a height of 5 feet (1.524 meters) in the center and 5 feet 1 inch (1.55 meters) at the posts. a badminton court for singles is rectangular in shape and measures 13.4 meters (44 feet) long and 5.18 meters (17 feet) wide. The net is placed at the center of the court and runs parallel to the length. It should be 1.55 meters (5 feet 1 inch) high at the edges and 1.524 meters (5 feet) high at the center. The court also has tramlines that are 1.5 inches wide and run along the length of the court.

To know more about  badminton court, here

brainly.com/question/30397639

#SPJ4

How should half a milligram be written to avoid confusion?

Answers

To avoid confusion, it is recommended to write half a milligram as "0.5 mg" or "0,5 mg" (depending on the local convention for decimal separators).

This format clearly indicates the exact amount of medication being administered and avoids any ambiguity that may arise if "0.5" is written without the units. Additionally, it is important to ensure that the decimal point is clearly visible and not accidentally misplaced, to ensure accurate dosing.

When the dose is less than a complete unit, place a zero before the decimal point. Half-milligram doses should be written as "0.5 mg" rather than ".5 mg" on prescriptions.

The strength may be misread as 5 milligrammes if the decimal point before the number were to be lost.

Learn more about prescriptions here :

brainly.com/question/30623230

#SPJ4

Method for treating mental disorders by mental rather than physical means, including psychoanalysis, humanistic therapies, and family and group therapies.

Answers

Psychotherapy is the method for treating mental disorders by mental rather than physical means, including psychoanalysis, humanistic therapies, and family and group therapies.

Psychotherapy is the application of psychological approaches, most notably those based on frequent personal interaction, to assist a person in changing behaviour, increasing happiness, and overcoming obstacles. Psychotherapy seeks to enhance an individual's well-being and mental health by resolving or mitigating problematic behaviours, beliefs, compulsions, thoughts, or emotions, as well as improving relationships and social skills.

Psychotherapy can be provided in person (one-on-one, with couples, or in groups), over the phone, through telephone counselling, or through the internet. Counselors or therapists must be licenced in several areas to use particular phrases and titles for self-identification or advertising. In some other states, practise limits are more tightly linked to the collection of fees.

To learn more about Psychotherapy, here

https://brainly.com/question/14227208

#SPJ4

Protein rich plant-based foods include:1. grains 2. seeds 3. nuts 4. legumes

Answers

Protein rich plant-based foods include: (4) legumes.

Protein is the biopolymers made up of amino acid monomers joined together by peptide bonds. Proteins are very essential for the living body because they are required for body-building and repair. Hence the food consumed should have rich quantities of protein.

Legumes are the plants belonging to the family Fabaceae. The food items from legumes are generally obtained as dry grains. The examples include  beans, soybeans, chickpeas, peanuts, lentils, etc. The importance of fats lies in their low fat, high fiber and protein component. Legumes are known to fix the atmospheric nitrogen naturally on their own.

To know more about protein, here

brainly.com/question/29776206

#SPJ4

What Is Object Permanence in Piaget's Theory?

Answers

Object permanence is a concept in cognitive development theory proposed by the Swiss psychologist Jean Piaget. According to Piaget, object permanence is the ability to understand that an object continues to exist even when it is no longer visible or present.

Piaget proposed that object permanence is acquired during the sensorimotor stage of development, which occurs in the first two years of life. At the beginning of this stage, infants have little or no understanding of object permanence.

They assume that objects only exist when they are seen or touched and have no sense of their continued existence when out of sight.

Piaget's theory of cognitive development has been the subject of much debate and criticism in recent years, with some researchers proposing alternative models of cognitive development.

To know more about Piaget's theory here

https://brainly.com/question/9653844

#SPJ4

What conditions does Protonix treat?

Answers

Answer:

Gastrointestinal problems

Explanation:

It's used for heartburn, acid reflux and gastro-oesophageal reflux disease (GORD) – GORD is when you keep getting acid reflux. It's also taken to prevent and treat stomach ulcers.

What is the ICD-10 code for sore throat Pain?

Answers

The ICD-10 code for sore throat pain is J02.9.

This code falls under the category of "Acute pharyngitis, unspecified" and is used to classify cases of sore throat where the cause is not specified. There are also more specific codes available for sore throat that is caused by a bacterial infection (e.g. J02.0 - Streptococcal pharyngitis) or a viral infection (e.g. J02.8 - Acute pharyngitis due to other specified organisms).

It is important to note that ICD-10 codes are used for billing and classification purposes and should be assigned by a healthcare provider. If you are experiencing sore throat pain, it is important to seek medical attention to determine the cause and receive appropriate treatment.

To know more about throat pain here

https://brainly.com/question/19988649

#SPJ4

What is acute blood loss anemia?

Answers

Acute anemia occurs when RBCs decline suddenly, most commonly due to hemolysis or rapid bleeding.

Acute posthemorrhagic anemia, also known as acute blood loss anemia, is a disorder in which a substantial amount of circulating hemoglobin is rapidly lost. Acute blood loss is typically connected with a trauma or severe injury that results in a substantial loss of blood. It can also happen before, during, or after a surgical treatment.

Chronic anemia, on the other hand, is characterized by a progressive decrease in RBCs and can be caused by iron or other dietary deficiencies, chronic illnesses, drug-induced anemia, or other factors. Anemia is defined as a reduction in the number of circulating red blood cells (RBCs), hemoglobin (Hgb), or the volume of packed RBCs (hematocrit). Anemia is defined by the World Health Organization as a hemoglobin level of less than 13 g/dL in males and less than 12 g/dL in women.

To learn more about Acute posthemorrhagic anemia, here

https://brainly.com/question/28260876

#SPJ4

What is the ICD 10 code for cardiac arrest?

Answers

I46.9 is the ICD-10 code for cardiac arrest. The group "Cardiac arrest and ventricular fibrillation," which also includes codes I46.0 to I46.9, includes this code.

A medical emergency known as cardiac arrest happens when the heart abruptly stops functioning, preventing blood supply to the brain and other essential organs. If not treated right away, it is a disorder that poses a serious risk of death or brain damage. Heart attack, heart failure, arrhythmias, drug overdose, and electrocution are a few common causes of cardiac arrest. Cardiopulmonary resuscitation (CPR) is the first step in treating cardiac arrest. After this, advanced life support techniques including defibrillation, drug delivery, and other interventions are used to treat the underlying causes of the condition. For better outcomes and survival rates after cardiac arrest, quick detection and action are essential.

Learn more about  cardiac arrest here:

https://brainly.com/question/27961151

#SPJ4

a nurse has been assigned to review process measures for the health care organization. which information should the nurse include in the review?

Answers

The information that the nurse should include in the review is:

Timeliness of careUse of medical imagingPercentage of patients receiving recommended vaccinations

It should contain the patient's medical history, current medications, allergies, pain levels, and pain management strategy, as well as discharge instructions. By including these data about your patient in your end-of-shift report, you reduce the possibility of an approaching nurse endangering the patient.

The degree of value offered by any health care resource, as assessed by some measurement, is referred to as health care quality. It is an assessment of whether something is excellent enough and acceptable for its function, much like quality in other professions. The purpose of health care is to offer high-quality medical resources to those who require them; that is, to provide good quality of life, treat illnesses when feasible, and extend life expectancy, among other things.

Researchers attempt to determine health care quality by using a variety of quality measures, such as counts of a therapy's reduction or lessening of diseases identified by medical diagnosis, a decrease in the number of risk factors that people have following preventive care or a survey of health indicators in a population who are accessing certain types of care.

To learn more about Health care quality, here

https://brainly.com/question/29437242

#SPJ4

What should be included in a nurses note?

Answers

Nurses' notes should include accurate and timely recording of the care and treatment provided to the patients.

Some essential aspects to be included in a nurse's note are:

Patient information: The note should begin with the patient's name, age, gender, and any other demographic information that is pertinent.

Vital signs: The patient's vital signs include blood pressure, pulse rate, respiration rate, temperature, and oxygen saturation.

Chief complaint: The reason for seeking care should be documented.

History of current illness: This includes information regarding the beginning of the patient's symptoms, the severity of the symptoms, and any variables that make the symptoms worse or better.

Assessment results: The nurse should record the physical assessment findings of the patient, including any abnormal or worrying findings.

Nursing interventions: Any nursing care delivered to the patient, such as drug administration, wound care, or other interventions.

Patient response to treatment: The nurse should record how the patient responds to nursing interventions as well as any changes in the patient's condition. Contact with other healthcare professionals, such as physicians, should be noted.

Plan of care: The nurse should document the patient's plan of care, which should include any follow-up visits, tests, or treatments.

Patient education: The nurse should keep a record of any information given to the patient or their family about their disease, treatment, or self-care.

For more such questions on nursing interventions, click on:

https://brainly.com/question/28101933

#SPJ4

What is the ICD-10 for skin rashes?

Answers

ICD-10 code R21 for Rash or other nonspecific face eruption is indeed a medical category as defined by WHO under range - Symptoms, signs or abnormal clinical or lab findings, not elsewhere categorised.

What is the term for skin rashes in medicine?

Dermatitis, which refers to skin irritation, is a simple rash. Anything that come into contact with your skin can lead to contact dermatitis, including chemicals found in rubber, latex, and elastic items. soaps, detergents, and cosmetics.

What exactly is a common skin rash?

Rashes on the skin can have dry, bumpy, uncomfortable, itchy, or red, inflamed skin. The main cause of this ailment is dermatitis, and when your face reacts with allergens and irritants. Bacteria, viruses, allergens, and conditions including eczema, psoriasis, or hives can all cause skin rashes.

To know more about abnormal visit:

https://brainly.com/question/11532928

#SPJ4

three resolution strategies that you can use resist negative from your family In a responsible way

Answers

Three resolution strategies that you can use resist negative from your family In a responsible way

Clear CommunicationSet BoundariesSeek outside support

What are the resolution strategies?

The strategies are explained as follows:

Clear Communication: Start by having an open and honest conversation with your family members to express your feelings and concerns. Explain the impact that their negative behavior has on you and make it clear that you would like to find a way to resolve the issue. Encourage them to do the same, and listen actively to what they have to say. This can help to build mutual understanding and respect.

Set Boundaries: If someone in your family continues to have a negative impact on your life, it may be necessary to set boundaries to protect yourself. This could mean limiting the amount of time you spend with that person or avoiding certain situations that trigger negative behavior. Be assertive but respectful when communicating your boundaries.

Seek outside support: If the situation becomes unmanageable, it may be helpful to seek support from a therapist, counselor, or other mental health professional. They can provide you with tools and strategies to manage the stress and help you to maintain a healthy and positive relationship with your family. They can also help you to identify patterns of behavior and find ways to break them.

Learn more about family at:

https://brainly.com/question/1007963

#SPJ1

What is a reduction in the normal movement of a joint?

Answers

Joint stiffness or limitation is the lack of a joint's typical range of motion. Numerous conditions, such as arthritis, injury, infection, inflammation, or mechanical issues like a misaligned joint or a restricted range of motion, can cause joint stiffness.

Joint stiffnessJoint stiffness may occasionally be transient and go away on its own with rest and altered activities. In other situations, chronic joint stiffness might be a problem that needs medical attention and therapy.Joint stiffness can be treated with physical therapy, pain medication, medicines, and, in extreme circumstances, surgery. In addition, lifestyle adjustments including keeping a healthy weight, exercising frequently, and refraining from activities that place an undue amount of stress on the affected joint will assist to lessen joint stiffness and enhance joint health.If you suffer joint stiffness, you should speak with a healthcare professional right away because prompt treatment can lessen joint damage and enhance joint function.

learn more about joint stiffness here

https://brainly.com/question/29485603

#SPJ4

obesity, high blood glucose, elevated blood lipids, and high blood pressure are all risk factors for heart disease that are reduced by physical activity. true/false

Answers

True. Physical activity is essential for maintaining healthy heart health.

Obesity, high blood glucose, raised blood lipids, and high blood pressure are risk factors for heart disease that can be reduced by regular physical exercise.

By enhancing your overall cardiovascular health, regular aerobic activity like walking, running, swimming, or cycling can help lower your chance of developing heart disease.

Your blood pressure can be lowered as well as your levels of bad and good cholesterol. Regular exercise can also assist you in maintaining a healthy weight, which is crucial for lowering your risk of heart disease.

Furthermore, exercise can lower your chance of getting diabetes and aid with stress management, both of which can increase your risk of heart disease.

To learn more about diabetes visit:

https://brainly.com/question/1227988

#SPJ4

Light enters the eye and is converted into electrical signals that can be processed by the brain. This process is calledChoose matching definition1Interposition2Thalamus3Cochlea4Transduction

Answers

Answer:

Photoreceptors

Explanation:

Identify the examples that support the restorative theory that sleep is beneficial.

Answers

The following example illustrate the restorative idea of sleep's health benefits:

In the midst of a growth period, nine-year-old Xavier sleeps a lot. When Phyllis broke her ankle, she slept all night and took more daytime naps. Tamika slept more than usual after finding out she was pregnant.

Restorative theory According to the restorative hypothesis of sleep, sleep is necessary for our physical and mental health as well as for rebuilding and mending our bodies. This idea contends that a number of physiological functions that assist in our bodies' repair and renewal take place when we sleep.For instance, the body produces growth hormone when you sleep, which aids in repairing and regenerating muscle and tissue. Memory consolidation, brain connection strengthening, mood regulation, and stress management are all benefits of sleep.According to the restorative theory, sleep is crucial for our bodies to operate at their best and that sleep restriction can have major negative effects, including lower cognitive performance, elevated stress levels, and a decline in overall health and wellbeing.

learn more about restorative theory here

https://brainly.com/question/12634595

#SPJ4

a food item is considered high in a nutrient if it provides at least ______ % of the daily value for that nutrient.
a. 10%
b.20%
c.30%
d.40%

Answers

Answer:

20%

Explanation:

5% or less is considered low, 20% or more is high

an article headline claimed that drugs cause homelessness due to a positive relationship found between rates of homelessness and drug use. however, if unemployment rates were influencing both drug use and homelessness, is this an example?

Answers

Yes, this is an example of confounding variables. Confounding variables are variables that can affect the relationship between two variables like unemployment and create an apparent association that may not actually exist.

In this case, unemployment rates may be a confounding variable that is affecting both drug use and homelessness, making it difficult to determine the true relationship between drug use and homelessness.

The headline in the article claiming that drugs cause homelessness is oversimplifying the issue and failing to consider the potential influence of confounding variables such as unemployment rates. To accurately understand the relationship between drug use and homelessness, it is important to control for potential confounding variables and conduct more rigorous studies.

In conclusion, when interpreting the results of a study, it is important to consider all potentially confounding variables that may influence the relationship between the variables being studied. Simply relying on a headline or a single study may not provide a full and accurate understanding of the issue.

To learn more about unemployment, click here:

https://brainly.com/question/13781104?

#SPJ4

The 5 stages of infection explained

Answers

The incubation period is the interval between first coming into contact with a pathogen (such as a virus, bacterium, fungus, etc.) and the onset of the first signs and symptoms. The infection is growing 5 stages

The five phases of infection show how an infectious 5 stages develops from initial exposure through recovery. The incubation stage is the initial stage, when the pathogen starts replicating in the body but there are no symptoms yet. The second stage, known as the 5 stages stage, is when general symptoms like weariness and fever start to manifest. The third stage, known as the acute stage, is characterised by more severe and pathogen-specific symptoms. The next step is the decline stage, when the body begins to heal and symptoms start to get better. The body eventually reaches its pre-infection state during the convalescence stage, at which point the immune system has built up an

Learn more about 5 stages here:

https://brainly.com/question/30404551

#SPJ4

Other Questions
what is h3o+ molecular geometry? PLEASE HELPPPPPPPPPP What is the ICD-10 code for history of leukopenia? can you help me match these What is the main story of Citizen Kane? Im really stuck on this The difference between hours of sleep needed and actual hours slept is a. sleep inertia. b. sleep pattern. c. sleep ratio. d. sleep debt. d using a calibrated microscope, when do you get better precision when determining the size of a specimen? polyphony, in music, the simultaneous combination of two or more tones or melodic lines (the term derives from the Greek word for "many sounds"). True/False? Sand found in commercial sand and gravel deposits is typically composed of _______. What might be a reason why India and China are so much more heavily populated than other countries with similar or larger geographic sizes such as the United States and Russia?restrictive religious beliefs in Russia and the United Statesforced sterilization procedures in China and Indialess nutritious food in China and Indiasmaller base population What are the 4 situational leadership styles? A survey of all beings on planet Quect found that 30% preferredpisquet juice to all other juices. If 6 beings preferred pisquet juice,how many beings were surveyed altogether? Which of the following sentences describes the next step in the construction? Please help select all orders pairs that are a solution for the function y=-8x+6? The San Francisco apartment of a viceconsul from japan is considered the sovereign territory of ? A. The united states. B. The united nations. C.japan. D. The united states n japan jointly how many gold medals did jesse owens won in the 1936 berlin olympics? if the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells ________. Color blindness is a gender-linked inherited condition that s much more common among men than women. Suppose that 5% of all men and 0.4% of all women are color-blind. A person is chosen at random and found to be color-blind. What is the probability that the person is male. (You may assume that 50% of the population are men and 50% are women). The double helix of DNA is composed of building blocks called A. amino acids. B. monosaccharides. C. phospholipids. D. disaccharides. E. nucleotides.