One property of water that makes it unique is its density. Which example describes a result of this property? Fish can continue to swim under floating ice on a lake. Trees transport water from their roots to their leaves. Water strider insects walk on the surface of pond water. Plants receive enough light to grow under the surface of a lake.
Answers
Answer:
Fish can continue to swim under floating ice on a lake.
Explanation:
Water is known to be a unique molecule due to the properties it posseses. According to this question, one of these properties is DENSITY. The hydrogen bonds that holds the molecules of water together makes this possible. Ice, which is the solid state of water, is less dense than liquid water because the hydrogen bonds becomes tightly packed together.
This causes ice to float on liquid water. Hence, in a lake, the less dense feature of ice makes it float on water, causing fishes to continue to swim effectively under floating ice on the lake.
Related Questions
Simple Question Help Needed
Answers
Answer:
the answer is ( d) because they are permanently fixed and usually or easily understood
What is this Cell Called_________?
Answers
Answer: Plant cells
Explanation:
Answer:
plant cells
Explanation:
How can we determine the velocity of a star moving toward or away from Earth? a. By looking at the color of the star. b. By the shift of its spectral lines. c. By the brightness of the star. d. By its change in apparent size.
Answers
Answer:
Hello!
Your answer should be B. By the shift of its spectral lines.
Explanation:
It is known that when studying space, to tell if a star is moving TOWARDS EARTH its measurements will move towards the RED side of the Spectrum...
MOVING AWAY will mean its measurements will move towards the BLUE end!
HOPE THIS HELPS!
itsMATT04
{i did a bit of research from revision guides so there may be some similar phrases! :)}
mitochondrial dysfunction in sod1g93a-bearing astrocytes promotes motor neuron degeneration: prevention by mitochondrial-targeted antioxidants
Answers
The study suggests that mitochondrial dysfunction in astrocytes carrying the SOD1G93A mutation contributes to motor neuron degeneration, which can be prevented by mitochondrial-targeted antioxidants.
The provided statement indicates that the study focuses on investigating the relationship between mitochondrial dysfunction in astrocytes carrying the SOD1G93A mutation and motor neuron degeneration.
The study also explores the potential preventive effects of mitochondrial-targeted antioxidants.
The SOD1G93A mutation is associated with amyotrophic lateral sclerosis (ALS), a progressive neurodegenerative disease affecting motor neurons.
Astrocytes, a type of glial cells, play an essential role in supporting the functions of motor neurons.
Mitochondrial dysfunction, which refers to impaired mitochondrial activity, has been implicated in various neurodegenerative diseases.
The study suggests that mitochondrial dysfunction in astrocytes carrying the SOD1G93A mutation contributes to motor neuron degeneration in ALS.
It proposes that targeted antioxidants, specifically designed to accumulate within mitochondria, can help prevent or mitigate the negative effects of mitochondrial dysfunction.
Overall, the study highlights the importance of mitochondrial health in astrocytes and its impact on motor neuron degeneration in the context of ALS.
It suggests that interventions targeting mitochondrial dysfunction could potentially be explored as therapeutic strategies for ALS and related neurodegenerative disorders.
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Ecosystems Unit Test 8 of 8 Items Item 8 Discuss an ecosystem in which there is a producer, a consumer, a secondary consumer, and a decomposer. Name the ecosystem and specific organisms for a producer, consumer, secondary consumer, and decomposer
Answers
Answer:
The ecosystem, in this case, is a forest. The producers are plants. The deer, who eats the plants, is the consumer. The wolf, who eats the deer, is the secondary consumer, and earthworms are the decomposers.
Explanation:
An ecosystem is a group of beings that are in a certain area where they interact with each other and with their surroundings. In this case, we describe a trophic level with beings that are in the forest.
Producers are beings that produce their food, like plants.Consumers or primary consumers are animals that eat producers. They are herbivores.Secondary consumers eat primary consumers. They can be omnivores, or like in this case, carnivores.Decomposers are bacterias, mushrooms, or earthworms. They act on all levels breaking down the rest of the animals and plants, obtaining nutrients to nourish the soil, and start the cycle again.Comparing the human gene to the cow gene, how many of the codons are exactly same?
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Given that both species are mammals, there is a high degree of genetic similarity between the human and cow genomes. Nonetheless, there may be variations in the DNA sequences of particular genes.
The fundamental building blocks of the genetic code, or codons, are what allow DNA information to be converted into the amino acid sequence of proteins. Three nucleotides, one from each of the four DNA nucleotide types, make up each codon (adenine, thymine, guanine, and cytosine). There are a total of 64 possible codons, of which 61 code for specific amino acids, while the remaining three are stop codons that signal the end of protein synthesis. The genetic code is degenerate, meaning that multiple codons can code for the same amino acid. Codon usage can differ between species and even between different tissues within the same organism, and can influence protein function, translation efficiency, and evolutionary processes.
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The forward-scattered (FSC) and side-scattered (SSC) values for lymphocytes compared with those for monocytes and neutrophils are:
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The FSC and SSC values for lymphocytes compared with those for monocytes and neutrophils are vital parameters utilized in flow cytometry analysis.
Flow cytometry is an essential technique utilized in life sciences research for analyzing single cells in a heterogeneous mixture. The forward-scattered (FSC) and side-scattered (SSC) values for lymphocytes compared with those for monocytes and neutrophils are significant components of this technique, which are primarily used to determine the size and granularity of cells. Here's how the FSC and SSC values for lymphocytes compare with those for monocytes and neutrophils:
FSC values:
The FSC value of lymphocytes is comparatively less than that of monocytes and neutrophils. As a result, lymphocytes are classified as small cells based on FSC values.
SSC values:
The SSC value of lymphocytes is also less than that of monocytes and neutrophils. As a result, lymphocytes are categorized as cells with low granularity.
Based on these observations, it can be concluded that lymphocytes are small cells with low granularity, whereas monocytes and neutrophils are large cells with high granularity. These distinctions can aid in the identification of different types of cells in a heterogeneous mixture.
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Which of the following contribute to the environmental resistance of bacterial endospores? Multiple Choice a. Spore coat b. Low water content of endospore c. Presence of calcium dipicolinate d. Lower pH e. All of the choices are correct.
Answers
The correct answer is (E) All of the choices are correct as all the options listed contribute to the environmental resistance of bacterial endospores.
They are highly resistant structures that allow certain bacteria, such as those from the genus Bacillus and Clostridium, to survive in harsh conditions. These characteristics help protect the genetic material and vital components of the bacterium.
(a) The spore coat is a protective outer layer that surrounds the endospore. It provides physical protection against chemicals, enzymes, and other environmental factors.
(b) The low water content of the endospore is crucial for its resistance. The dehydration of the endospore helps preserve the stability of macromolecules and protects against damage caused by environmental factors.
(c) Calcium dipicolinate is a compound found within bacterial endospores. It plays a role in stabilizing the DNA and proteins within the endospore, contributing to its resistance against environmental stressors.
(d) The lower pH of the endospore interior helps protect against enzymatic degradation and other harmful factors.
Overall, the combination of the spore coat, low water content, presence of calcium dipicolinate, and lower pH all contribute to the environmental resistance of bacterial endospores.
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NO LINKS PLEASE!!!!
What does a warbler MOST likely eat?
A. fish and insects
B. insects and nectar
C. seeds and nuts
D. small mammals and nuts
Answers
Answer:
the warbler most likely eats B- insects and nectar
A cell has a magnified diameter of 16cm when seen through a microscope. The microscope has a magnification of 5. What is the real size of the cell's diameter? Give your answer to 2 decimal places.
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Mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nation's waters
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The Clean Water Act requires that the chemical, physical, and biological integrity of the country's waters be restored and maintained.
What purpose did the Clean Water Act of 1972 serve?A permit was required under the CWA in order to discharge any pollutant from a point source into navigable waters: Discharges are regulated by the National Pollutant Discharge Elimination System (NPDES) permit program run by the EPA. Distinctive conveyances, such pipes or artificial ditches, are known as point sources.
What is the 1948 Clean Water Act?The Federal Water Pollution Control Act of 1948 was the first comprehensive federal policy statement expressing interest in clean water initiatives, and it specifically allocated monies for state and municipal governments to address water pollution issues, including research.
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Maggie recorded her observations of the baking soda used in lab today. which observation indicated a chemical
property of the baking soda?
a. the texture is fine crystals.
b. she observes bubbles.
c. the color is white.
d. the substance dissolves.
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The observation that indicates a chemical property of the baking soda is: (b) she observes bubbles.
Chemical property of any substance is the one that has the ability to cause some chemical changes in the substance. It changes the chemical bonds of the substances during a chemical reaction that causes the substance to change.
Baking soda is also known by its chemical name sodium bicarbonate. Baking soda can react with an acidic substances that releases carbon dioxide and therefore bubbles are observed. It is widely used in the baking purposes due to its property of chemical leavener.
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Which of the following is NOT a population of pacemaker cells in the heart? A) sinoatrial (SA) node. B) papillary muscles. C) atrioventricular (AV) node
Answers
The option that is not a population of pacemaker cells in the heart is option B) papillary muscles.
Do AV and SA nodes act as pacemakers?Yes, The upper heart chambers (atria) contract as a result of an electrical signal made by the SA (sinoatrial) node. The lower heart chambers (ventricles) then contract or pump as a result of the signal as it travels via the AV (atrioventricular) node.
Therefore, The sinus node also makes electrical impulses, which set up a healthy heart's typical rhythm and pace. Consequently, the SA node is referred to as the heart's natural pacemaker.
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Billy thinks evolution is slow and continuous. He believes in
Answers
Answer:
Gradualism
Explanation:
gradualism. noun. The belief in or the policy of advancing toward a goal by gradual, often slow stages. Biology The view that evolution proceeds by imperceptibly small, cumulative steps over long periods of time rather than by abrupt, major changes.
In the deep water where there is no sunlight, how do bacteria and plants create
their food?
Answers
Answer:
Bacteria and Plants use the process of chemosynthesis to create/make food using chemical reactions.
Explanation:
"Autotrophs that perform chemosynthesis do not use energy from the sun to produce food. Instead, they make food using energy from chemical reactions, often combining hydrogen sulfide or methane with oxygen. ... Bacteria that live in the deep ocean, near hydrothermal vents, also produce food through chemosynthesis."
What name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna? what name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna? rna processing gene expression polypeptide formation transcription translation.
Answers
d) Transcription is the name given to the process in which a strand of DNA is used as a template for the manufacture of a strand of pre-mRNA.
In the field of biology, transcription can be described as a part of the central dogma process during which information present inside a DNA segment is coded into an mRNA transcript. This mRNA that is formed as a result of transcription is called as pre-mRNA as it has to go through some alternations in order to be used for the translation process.
The strand of DNA that is being used for the process of transcription is referred to as the template strand. Each template strand produces a specific mRNA transcript through which specific proteins will be formed.
The question will correctly be written as:
hat name is given to the process in which a strand of dna is used as a template for the manufacture of a strand of pre-mrna?
a)rna processing
b) gene expression
c) polypeptide formation
d) transcription
e) translation.
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Except for lactose and some glycogen, the carbohydrates we ingest are mainly from animals.a. Trueb. False
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The statement is (b.) False. Except for lactose and some glycogen, the carbohydrates we ingest are mainly from plants, not animals. Examples include starch, cellulose, and various sugars found in fruits, vegetables, and grains.
Carbohydrates are found in many foods, including plants and animals. Plants are a major source of carbohydrates in the human diet, as they contain complex carbohydrates such as starch and fiber, as well as simple sugars like fructose and glucose. Animal products such as milk, honey, and certain tissues (e.g. liver) may also contain small amounts of carbohydrates, but the bulk of the carbohydrates in the human diet come from plant-based foods such as grains, fruits, and vegetables. Carbohydrates are one of the three macronutrients that are essential for the human diet, along with proteins and fats. They are organic compounds made up of carbon, hydrogen, and oxygen atoms, and they are the primary source of energy for the body's cells.
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Which nucleotide in the sickle mutation DNA is different from those of the normal DNA? Name the base and describe the location in the sequence 2. How did the changes in the DNA sequence affect the results of transcription and translation? Using your textbook or another source,find the symptoms of sickle cell anemia and describe them. 3. Laboratory 10 DHA Stracture and Function
Answers
Sickle cell anaemia is a genetic disorder resulting from the sickle cell mutation. The change in the DNA sequence affects the results of transcription and translation.
The sickle cell mutation in DNA involves a single nucleotide change. In the normal DNA sequence, the nucleotide adenine (A) is present at a specific position, but in the sickle cell mutation, it is replaced by thymine (T). This mutation occurs in the sixth codon of the β-globin gene, resulting in the substitution of glutamic acid with valine in the protein sequence. During transcription, the mutated DNA sequence is transcribed into messenger RNA (mRNA), resulting in a mutated mRNA molecule. The presence of the T nucleotide instead of A in the mRNA alters the codon sequence. Instead of coding for glutamic acid, the mutated codon now codes for valine.
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A 41-week pregnant multigravida arrives at the labor and delivery unit after testing indicated that her fetus could be experiencing some difficulties in utero. Which diagnostic tool yields more detailed information about the condition of the fetus
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The diagnostic tool that yields more detailed information about the condition of the fetus in this situation is a Fetal Non-Stress Test (NST) combined with a Biophysical Profile (BPP).
A Fetal Non-Stress Test is a noninvasive test that monitors the fetal heart rate and its response to fetal movement. This helps in assessing the fetus's well-being.
A Biophysical Profile, on the other hand, is a more comprehensive evaluation that combines an NST with an ultrasound examination.
The BPP assesses fetal heart rate, fetal movement, fetal breathing movements, fetal tone, and amniotic fluid volume, providing a more detailed and accurate insight into the condition of the fetus.
In the case of a 41-week pregnant multigravida with a potentially distressed fetus, a combination of Fetal Non-Stress Test and Biophysical Profile would provide the most detailed and accurate information about the condition of the fetus.
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where are your adrenal glands located in your body
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The white matter of the CNS represents a region dominated by the presence of
a. astrocytes
b. neuroglia
c. oligodendrocytes
d. unmyelinated neurons
Answers
c. oligodendrocytes
Oligodendrocytes dominate the white matter of the central nervous system (CNS). These specialized cells are responsible for producing and maintaining myelin, a fatty substance that wraps around nerve fibers (axons) in the CNS. Myelin acts as an insulating layer, enhancing the conduction speed of nerve impulses.
In the CNS, white matter refers to regions that primarily consist of myelinated axons. Oligodendrocytes play a crucial role in forming and maintaining the myelin sheath around these axons, allowing for efficient and rapid transmission of electrical signals between different areas of the CNS.
Oligodendrocytes extend multiple branches to wrap around several axons simultaneously, forming compact myelin sheaths. This clustering of myelinated axons gives white matter its characteristic appearance. In addition to oligodendrocytes, other types of neuroglial cells, such as astrocytes and microglia, are also present in the white matter, providing support and performing various functions.
Overall, oligodendrocytes are the primary cells responsible for the presence of myelin and the dominance of white matter in the CNS. Their role in forming and maintaining the myelin sheath is essential for proper functioning of the nervous system.
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carnivorous plants and legumes (e.g., peas, soybeans) both absorb key nutrients directly from other organisms. how is nutrient acquisition in pitcher plants similar to that in legumes? how is it different? drag the appropriate items to their respective bins.
Answers
The majority of plants use their roots to take nitrogen from the soil. Carnivorous plants, however, use their particularly modified leaves as traps to extract nitrogen from their animal food. Traps function in many ways.
The most peculiar adaptations to low-nutrient settings are found in carnivorous plants. These plants capture and devour a variety of insects, occasionally even tiny frogs and animals, to gain some nutrients. They are sometimes referred to as insectivorous plants because insects are one of the most popular prey items for the majority of carnivorous plants.
Carnivorous plants have traits that draw prey, capture it, kill it, and digest it while absorbing nutrients. Only a few plants possess all of these qualities. Many plants have glands that release sticky compounds. Few other plants, primarily bromeliads, have tanks that resemble pitchers.
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which step in the scientific method do you graph results classified information and make calculation?
Answers
According to the research, the correct option is Data analysis. It is the step in the scientific method where you graph results classified information and make calculation.
What is scientific method?It is the series of steps that must be followed to obtain valid knowledge from a scientific point of view, using reliable instruments for this.
Among the necessary steps that make up the scientific method are:
ObservationFormulate a hypothesisExperimentationData analysisPresentation of the scientific theoryIn this sense, Data analysis is the stage that uses graphs for the representation of data, generally numerical and make calculation, with a relationship between them, which facilitates the interpretation of the results.
Therefore, we can conclude that according to the research, the correct option is Data analysis. It is the step in the scientific method where you graph results classified information and make calculation.
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What is 6.9x10^7 written in standard form
Answers
Answer: 6.9 x 10⁷ is a scientific notation.
6.9 x 10⁷ in standard form is 69,000,000
Scientific notation is used to represent very large numbers or very small numbers.
Scientific notation has three parts. Its parts are the coefficient, base of ten, and the exponents.
6.9 is the coefficient
10 is the base of 10
7 is the exponent
The must always be 1 digit before the decimal point in the scientific notation.
The exponent tells us the number of places the decimal point has moved. Its sign tells us the direction of the decimal point's movement.
Since the exponent is positive, it tells us that the decimal point moved from right to left.
69000000. to 6.9000000
If the exponent had a negative sign, it means that the decimal point moved from left to right.
example: 6.9 x 10⁻⁷
its standard form would have been .00000069
Explanation:
breathing in oxygen is important because if oxygen became unavailable to the cell a.glycolysis would stop. b.the electron transport chain would stop. c.the preparatory reaction would stop. d.the krebs cycle would stop.
Answers
Options B, C, and D are correct. Breathing in oxygen is important because, without it, the electron transport chain, preparatory reaction, and Krebs cycle would stop.
Oxygen is a key detail in the very last stages of cellular respiration, in particular in the electron shipping chain. Without oxygen, cellular respiration can not be finished, and the cellular will now not have enough power to characteristic.
When oxygen is unavailable to the cell, the electron delivery chain might forestall functioning, which would reason an accumulation of electrons in the gadget.
This will inhibit the electron carriers from accepting extra electrons, and as an end result, ATP manufacturing could be decreased or maybe forestalled completely.
Moreover, the construct-up of electrons can cause the formation of reactive oxygen species, which could damage mobile structures and result in cell demise.
Moreover, without oxygen, the Krebs cycle, additionally referred to as the citric acid cycle, might no longer continue. The Krebs cycle is the second level of cell respiratory and produces energy-rich molecules such as ATP, NADH, and FADH2.
If the Krebs cycle is disrupted, the mobile can no longer generate the strength required for metabolic processes, and the mobile might eventually die. Lastly, oxygen is vital for the preparatory reaction, which is step one in cell respiration.
This response converts glucose into pyruvate and generates ATP molecules. If oxygen isn't always to be had, the preparatory reaction can't proceed, and the cellular could now not have the energy essential to perform crucial features.
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Which of the following helps to explain why some freshwater stickleback populations lack pelvic spines?A. In lakes where there are no large predatory fish, there is no advantage to having pelvic spines.B. In lakes with dragonfly larvae, pelvic spines can be disadvantageous, allowing the predatory larvae to grab the fish.C. Freshwater fish have evolved different types of protective armor to keep them safe from predators.D. In freshwater, a marine stickleback sheds its spines.E. Pelvic spines are homologous to legs in four-legged animals and freshwater sticklebacks don't need hind limbs to move.
Answers
A and B are the correct answers
In lakes where there are no large predatory fish, there is no advantage to having pelvic spines and in lakes with dragonfly larvae, pelvic spines can be disadvantageous, allowing the predatory larvae to grab the fish.
This is because pelvic spines are a form of protective armor that helps to defend the fish against predators. In lakes where there are no large predators, these spines are not necessary for survival and so the fish have evolved to not have them. In lakes with dragonfly larvae, pelvic spines can be disadvantageous as they provide a place for the larvae to grab the fish and so the fish have evolved to lack these spines.
The other answers are incorrect because freshwater fish have evolved different types of protective armor to keep them safe from predators, such as scales and slime, and a marine stickleback does not shed its spines when it enters a freshwater environment. Lastly, pelvic spines are not homologous to legs in four-legged animals and freshwater sticklebacks don't need hind limbs to move.
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Using a microscope, a scientist has identified a group of cells. Each oval shaped cell appears to have a cell membrane and several ribosomes in it's cytoplasm. In one area of the cells, a circular band of DNA can be observed. What type of cells are these
Answers
Answer:
Prokaryotic cells
Explanation:
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Sheep are raised in significantly smaller numbers in the United States than either cattle or pigs. Sheep farming has changed in recent years. How has it changed?
A.
It has increased since 1980.
B.
It has declined since 1980.
C.
It has increased since 2000.
D.
It has declined since 1960.
Answers
The shortage of the resources along with the maintenance as this sis why the requirement that is getting lesser has impacted the industry. Although it contributes a large amount to the economy.
What is the name of 1st hybrid sheep ?It is the sheep that was named as Dolly and was invented in 2002 by cloning.
The shortage of the large-animal veterinarians taking place in many areas of country is challenge to sheep industry and to the other livestock industries as well . The same conditions led to the short fall in the United states as well.
Today, the domestic sheep count is 1/10 of the size it was in the World War II in the United states . The decrease is a result of the economic and the cultural factors that are coming together And it has left to the wonders. Some of the sheep that are raised for the wool others primarily for food.
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A ________ can contain many ecosystems?
A. habitat
B. ecosystem
C. biome
D. population
Answers
Answer:
C. Biome
Explanation:
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Question 2. A population of 100 healthy women was recruited from the internal medicine practice at UT Southwestern Medical Center from June 1 – June 30, 2000 and followed for the development of breast cancer. Twelve women developed breast cancer after each was followed for 4 years. Ten women who remained healthy were followed for 2 years and then were lost to follow-up. Five women died of heart disease after 6 years of follow-up. These five women did not develop breast cancer. The remaining women remained healthy and were each followed for 10 years. a. Are the 100 women who enrolled in the study members of a fixed or dynamic population? (3.33 pts) The women are members of a fixed population.
b. Calculate the cumulative incidence of breast cancer in this population and interpret your result in one sentence. (3.33 pts) – Show your works
c. Calculate the number of person-years of observation that was accrued by this population. (3.33 pts) – Show your works
d. Calculate the incidence rate and interpret your result in one sentence. (3.33 pts) – Show your works
Answers
b) Out of the 100 women in the study, 12% developed breast cancer during the follow-up period.
c) The person-years of observation that was accrued by this population is 1,280 person-years.
d) The incidence rate of breast cancer in this population is 9.375 cases per 1,000 person-years of observation.
b. To calculate the cumulative incidence of breast cancer in this population, we need to divide the number of new cases of breast cancer by the total number of individuals at risk.
Number of new cases of breast cancer = 12
Total number of individuals at risk = 100
Cumulative incidence of breast cancer = (Number of new cases of breast cancer / Total number of individuals at risk) x 100
Cumulative incidence of breast cancer = (12 / 100) x 100 = 12%
Interpretation: Out of the 100 women in the study, 12% developed breast cancer during the follow-up period.
c. To calculate the number of person-years of observation accrued by this population, we need to sum up the individual follow-up times for each person.
Number of women followed for 4 years = 12
Number of women followed for 2 years = 10
Number of women followed for 10 years = (100 - 12 - 10) = 78
Person-years of observation = (Number of women followed for 4 years x 4) + (Number of women followed for 2 years x 2) + (Number of women followed for 10 years x 10)
Person-years of observation = (12 x 4) + (10 x 2) + (78 x 10) = 480 + 20 + 780 = 1,280 person-years
d. To calculate the incidence rate, we divide the number of new cases of breast cancer by the person-years of observation.
Number of new cases of breast cancer = 12
Person-years of observation = 1,280
Incidence rate = (Number of new cases of breast cancer / Person-years of observation) x 1,000
Incidence rate = (12 / 1,280) x 1,000 = 9.375 per 1,000 person-years
Interpretation: The incidence rate of breast cancer in this population is 9.375 cases per 1,000 person-years of observation.
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