Secondary prevention is the type of prevention that takes place after the precursors of disease have interacted with the host. This often involves interventions such as vaccination, which induce immunological memory, and measures taken during the period of decline to prevent secondary infections.
Explanation:The form of prevention that takes place after the precursors of disease interact with the host is called secondary prevention. This falls in the phase of illness where symptoms have appeared and intervention is required to halt the process of the disease. A primary example of secondary prevention in action is the vaccination program. With vaccinations, your body generates immunological memory, allowing you to combat the disease more vigorously upon exposure in the future, because it can mobilise a strong secondary response.
Secondary prevention strategies also include actions during the period of decline, where the number of pathogens starts to decrease along with symptoms. Due to the immune system having been busy fighting off the primary infection, this period can leave an individual susceptible to secondary infections, which prevention measures should also aim to mitigate.
Therefore, secondary prevention occurs at the stage where the disease onset has already happened and early treatment is used to cure or stop the progression of the disease, thereby lowering its impact on the host's health.
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Unit seven: lab questions the jungle search for viruses <- your first lab link 1. where did aids/hiv originate? how did it move to humans? 2. why is it important for human health to study viruses at the "viral chatter" stage? 3. how might people come into contact with viruses that could jump to humans? 4. why have risky behaviors for zoonotic diseases continued even though we know that some of these diseases can infect humans? 5. why is the global tracking of zoonotic diseases important? genetically engineering the avian flu <- your second lab link 1. why is avian flu a concern? 2. how does the virus get into a cell? what happens once the virus gets in? 3. what would make it possible for the avian flu to be transferred from human to human? 4. why are scientists looking at the 1918 flu?
HIV attacks human's immune
system just like SIV (the Simian Immunodeficiency Virus)
attacks chimpanzee's immune systems. Scientists found similarities in these virus and they believe that HIV had origin in chimpanzees and then crossed to humans that were hunting them.
2)why is it important for humans to study the "viral chatter" stage?
The viral chatter stage it's when the virus is moving from animals to humans it's very important for humans to study this stage because it could lead to earlier diagnoses before it reaches the human stage.
3. contact with viruses that could jump to humans:Which of these is a disadvantage of using renewable resources, such as wind energy and sunlight, instead of using renewable resources?
A) Renewable resources are widely available.
B) Renewable resources can be impacted by weather.
C) Renewable resources produce less waste materials.
D) Renewable resources must be imported from other countries.
Answer:
The Correct Answer is B.
Explanation:
Renewable energy also depends on weather for its sources of power.Hydro generators required rain to fill dams to supply flowing water.It is difficult to produce that much electricity as we can produce by the traditional methods by using fossil fuels.Wind turbines need wind and solar energy need a clear sky and sunny day to collect heat and produce electricity.
Renewable resources can be impacted by weather because it is present in open environment.
Factors affecting renewable energyRenewable energy technologies are highly dependent on climatic factors such as sunlight, wind speed and water availability. Due to direct interaction with environment, the renewable resources can be affected by weather conditions so we can conclude that renewable resources can be impacted by weather because it is present in open environment.
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Field research does not take place at _____. a toxic waste dump the ocean floor a laboratory the rain forest
A laboratory is the answer.
Scientists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. It is believed that these early horses lived in the thick forests. What may have helped horses change over the last 40 million years?
Answer:
Option C
Explanation:
Please see thee attachment
____ is a group of cells that work together to perform a specific function? Need answer asap
A person can see clearly up close, but cannot focus on objects beyond 82.0 cm . she opts for contact lenses to correct her vision. part a part complete is she nearsighted or farsighted? is she nearsighted or farsighted? she is nearsighted. she is farsighted.
As the individual body size of an organism increases, the population density for this organism in a given habitat tends to
What property of light allows a mirror to show your image?
Light reflection is the property that enables a mirror to show your image.
Light exhibits the property of reflection that allows a mirror to show your image. When light hits a mirror, it follows the law of reflection, where the angle of incidence equals the angle of reflection, creating a virtual image behind the mirror.
Jon has been experiencing increased thirst, increased hunger, and an increase in the frequency of urination. Jon's doctor suspects uncontrolled diabetes and orders a urinalysis. From the symptoms and test order, what condition does Jon's doctor want to confirm?
Answer: C. polyuria
Explanation:
Question 47 Unsaved
The area of land on which all runoff, sediment, and water-soluble substances flow to a single surface water outlet (like a river or stream) is called
1)
recharge zone
2)
aquifer
3)
buffer strip
4)
watershed
The correct answer is option 4, that is, watershed.
Watershed refers to the area of land, which channels snowmelt and rainfall to the streams, creeks, and rivers, and finally to the points of outflow, like the bays, reservoirs, and the ocean.
The size of a watershed, also known as a catchment or a drainage basin is illustrated on many scales, considered to as its hydrological unit codes, on the basis of its geography, which is most relevant to its particular region. A watershed can be small, like as a single county or modest as an inland lake.
What are the "pieces of bread" on either side of the "sandwich generation?"?
Explain the characteristics of Archaebacteria?
A body of water, located near Fresh Kills, is highly polluted because rain washes toxic materials from Fresh Kills into the water. This process is known as _____.
What is lanugo? very fine, soft hair on the face and arms of people with anorexia nervosa a sudden drop in blood pressure from excessive dieting a side effect of liposuction surgery a supplement claimed to increase metabolism 1 points?
17. Biologists have hypothesized that echinoderms are closely related to chordates because both groups are deuterostomes.
Answer:
True
Explanation:
15- happens daily
16- courtship
Which event describes how water cycles through living things? A. Waves crash down on a beach. B. Runoff eventually spills into the ocean. C. Humans sweat in a tropical heat. D. Rocks break off the side of a cliff.
it is C. Humans sweat in a tropical heat
Answer:
the answer is c
Explanation:
BECAUSE I SAID SO
The centrosome and centrioles are crucial for the process of cell division in animal cells. During cell division, two centrioles come together with some other special proteins and form the centrosome. As mitosis progresses and chromosomes line up at the equator of the cell, the centrosomes are responsible for what occurrence in the dividing cell? A) They help the cell's nucleus replicate DNA. B) They are responsible for pinching the single nucleus into two at the end of mitosis. C) They are responsible for the production of the proteins that reform the nuclear membrane. Eliminate D) They produce microtubules that attach themselves to the chromosomes and aid in separating them.
Answer:The answer is D) They produce microtubules that attach themselves to the chromosomes and aid in separating them.
Explanation:
All plants produce _______ by mitosis and _______ by meiosis. select one:
a. spores; gametes
b. gametes; gametes
c. gametes; spores
d. spores; spores
e. spores; gametes and spores
Answer:
gametes;spores
Ribosomes create, or synthesize, proteins through the use of DNA and RNA. Which of these is a step in protein synthesis?
In protein synthesis, DNA is transcribed into mRNA which then travels to ribosomes. Ribosomes read the genetic instructions on the mRNA and translate them into a specific sequence of amino acids to form a protein, a process assisted by tRNA.
Explanation:In the context of protein synthesis, a crucial step involves the functioning of ribosomes which are complex entities consisting of protein and RNA, functioning in the translation phase. Ribosomes read the genetic information given by the sequence of nitrogenous bases in the messenger RNA (mRNA), which is transcribed from DNA in the nucleus of the cell. The genetic code on mRNA gets translated into a specific sequence of amino acids in a protein, with the help of transfer RNA (tRNA), forming polypeptides. Errors in this process can lead to incorrect or dysfunctional proteins. In summary, the primary step in protein synthesis is transcription of DNA to mRNA, then comes the translation of mRNA to a sequence of amino acids to form a protein, all under the control of ribosomes.
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Of the components that make up one's total energy expenditure, which is controlled by the person?
Total daily energy expenditure (TDEE) represents calories burned vs calories consumed or the total number of calories you burn for energy each day. It consists of three main components:
1. Resting metabolic rate (RMR) or Basal metabolic rate (BMR)- It is the energy which is associated with the maintenance of major body functions.
2. The thermic effect of activity (TEA) or Activity thermogenesis- It is the energy expenditure due to physical work, muscular activity or physical exercise and it is controlled by a person.When an animal loses a lot of blood, what do baroreceptors tend to signal to the animal?
Scientists can explore whether two different animal species have evolved from a common ancestor, using evidence
Explanation:
These are the answer choices they didn't put:
analysis of strands of DNA
studies of embryos during development
comparison of bones and muscles
comparison of experiences from each organism
Scientists can explore whether two different animal species have evolved from a common ancestor by looking for evidence of shared traits or features.
These shared traits, called homologies, can include anatomical features such as bones or body structures, as well as genetic or developmental similarities. For example, the wings of a bat and the arms of a human both share the same bone structure, indicating that they evolved from a common ancestor with that same bone structure.
Additionally, genetic studies can reveal similarities in DNA sequences or gene expression patterns between different species, further supporting the idea of a shared evolutionary history. By examining these and other types of evidence, scientists can reconstruct the evolutionary relationships between different species and gain a better understanding of how life on Earth has changed over time.
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true or false: the only predictable thing about a drug is that it will make you sick.
Index fossils allow geologists to _____.
Index fossils enable geologists to determine the geological ages of fossils and calculate the rate of speciation of early organisms, which provides an insight into the history of evolution on Earth.
Explanation:Index fossils play a crucial role in geology by allowing researchers to determine the geological ages of the fossils. This information is used to calculate the rate of speciation of early organisms. Index fossils are typically sought in horizontal rock layers, across a variety of rock types, and they are particularly valuable when they are abundant within these layers.
The investigation and categorization of these fossils aid in creating a layout of the biological history on Earth, displaying the timeline and progression of evolution. For instance, the similarities in morphology between the appendages of whales, birds, and mammals is suggestive of these species sharing a common ancestor.
Thus, the process of studying index fossils is intricate, demanding careful excavation techniques, and detailed documentation in order to provide the most accurate picture of our planet's geological and biological past.
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Faking your experimental results is called _____.
Answer:
scientific misconduct
Explanation:
The term “misconduct in research” applies to any action involving improper treatment of the subjects involved in research, or purposeful manipulation of experimental scientific results in a way that does not reflect the truth. Although relatively easy to conceptualize, it is often difficult to identify - especially in scientific publications.
There are numerous types of misconduct in research reporting. Among the most serious are falsification (alteration / misrepresentation) or the fabrication of data and images, as they distort the truth and lead to false assumptions, confusing clinicians and / or researchers.
Paraquat is a general herbicide that kills most types of plants. in a population of ferns, it was found that 40% of the gametophytes showed resistance to paraquat (resistance is caused by a recessive allele). what is the expected frequency of resistant sporophytes in this population?\
Final answer:
Using the Hardy-Weinberg principle, the expected frequency of resistant sporophytes due to a recessive allele in a population of ferns, where 40% of the gametophytes show resistance to paraquat, is 16%.
Explanation:
If 40% of the gametophytes are resistant to paraquat and the resistance is due to a recessive allele, we can infer that these gametophytes are homozygous recessive for the trait (rr). Using the Hardy-Weinberg principle, we can calculate the frequency of the recessive allele 'r' in the population.
Let 'p' be the frequency of the dominant allele 'R' and 'q' be the frequency of the recessive allele 'r'. Since the gametophytes are haploid, the frequency of resistant gametophytes (rr) is equivalent to the frequency of the recessive allele 'q', so q = 0.40. After finding 'q', we can use p + q = 1 to find 'p'.
To find the expected frequency of resistant sporophytes, which are diploid, we need to calculate the proportion of rr individuals in the population. This is given by q² (the square of the recessive allele frequency).
Therefore, the expected frequency of resistant sporophytes in the population would be q² = 0.40² = 0.16, or 16%.
Cellular respiration in animals is necessary to transfer the chemical energy from sugar obtained from their food into ATP for use throughout the body. Which two systems work together to transport the sugar from food to the cells in the organism’s brain?
Final answer:
The digestive system and the cardiovascular system work together to transport sugar from food to the cells in the organism's brain.
Explanation:
The two systems that work together to transport sugar from food to the cells in the organism's brain are the digestive system and the cardiovascular system.
In the digestive system, food is broken down into glucose, a simple sugar that is then absorbed into the bloodstream.
The cardiovascular system, consisting of the heart and blood vessels, transports the glucose-rich blood to the brain and other cells in the body where it can be used for cellular respiration.
What is formed by the mixing of salty sea water and fresh river water
The drug dideoxycytidine (used to treat certain viral infections) is a nucleotide made with 2',3'-dideoxyribose. this sugar lacks –oh groups at both the 2'and 3' positions. explain why this drug stops the growth of a dna chain when added to dna.
Dideoxycytidine, a type of dideoxynucleotide, disrupts the process of DNA synthesis because it lacks the crucial 3' hydroxyl group needed to form phosphodiester bonds, which connect the nucleotides in a DNA chain. Once it is incorporated into the DNA chain, no further nucleotides can be added, thereby terminating the growth of the DNA chain.
Explanation:The drug dideoxycytidine is a type of dideoxynucleotide (ddNTP), which is similar in structure to a deoxynucleotide (dNTP), but is missing the 3′ hydroxyl group (indicated by the shaded box). This lack of a 3' hydroxyl group means that when a dideoxynucleotide is incorporated into a DNA strand, DNA synthesis stops. Deoxynucleotides, which are the regular building blocks of DNA, have a hydroxyl group (-OH) at the 3′ position of their sugar component (deoxyribose). This hydroxyl group is crucial for the formation of the phosphodiester bonds that link nucleotides together to form the DNA chain.
However, the dideoxycytidine molecule has neither a 2' nor 3' hydroxyl group, which means that once it gets added to the growing DNA chain, no additional nucleotides can be added because the necessary 3′ -OH group required for forming the next phosphodiester bond is not available. In this way, dideoxycytidine stops the growth of the DNA chain when added to DNA. This is known as the dideoxy chain termination method.
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Meiosis creates genetic ______ in cells. (2 points) variety consistency similarities replicas