As a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag forces and move at, more or less, constant velocity of 100 micrometer/s for periods of time. If the frictional drag force on a bacterium is 0. 1 n, how much work does the bacterium do in 1 s?.
Answers
The work done by the bacterium in 1 second will be calculated by multiplying the force by the distance covered per unit time. As given, Frictional drag force on a bacterium is 0.1 N. Velocity of the bacterium = 100 micrometer/s = 100 × 10⁻⁶ m/s.
Distance covered by the bacterium in 1 second = Velocity × Time taken= 100 × 10⁻⁶ m/s × 1 s= 100 × 10⁻⁶ m Work done by the bacterium = Force × Distance covered per unit time= 0.1 N × 100 × 10⁻⁶ m= 10⁻⁵ J Therefore, the bacterium does 10⁻⁵ J of work in 1 second.
They are responsible for numerous ecological functions, including nutrient cycling, biodegradation, and symbiosis. Archaea are single-celled organisms that can be found in a variety of environments.
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Related Questions
Individual A, who is suffering from cardiovascular disease consume a set of briyani rice
daily for a long period of time.
Discuss the effects of the diet to his health.
[10 markah/ marks]
Answers
Answer:
Eating whole grains like brown basmati rice is linked to a lower risk of heart disease. Whole grains help to reduce blood cholesterol levels.
https://www.webmd.com/diet/health-benefits-basmati-rice#1
• Describe the arteries (including specific regions of the aorta) that blood would travel through on its way from the heart into the lower limbs • Describe the pressure differences between the lun
Answers
The arterial system comprises of arteries that are blood vessels that carry oxygenated blood from the heart to other body organs. The heart has two main arteries: the aorta and the pulmonary artery.
The aorta, which is the largest artery in the body, carries oxygenated blood to different regions of the body, including the lower limbs.The aorta is divided into several regions, and each region supplies blood to different regions of the body. The following are the regions of the aorta:Ascending aortaArch of the aortaDescending thoracic aortaAbdominal aortaArteries that supply the lower limbs arise from the abdominal aorta. Specifically, the common iliac arteries arise from the abdominal aorta, and these arteries divide to form the external and internal iliac arteries. The internal iliac arteries supply the pelvic region, while the external iliac arteries supply the lower limbs.
The pressure in the left side of the heart is higher compared to that of the right side of the heart. This is because the left side of the heart pumps blood to the systemic circulation, while the right side of the heart pumps blood to the lungs.The pressure in the aorta is high, and it ranges between 120 mmHg to 80 mmHg during diastole. Blood pressure decreases as blood flows into the arterioles and capillaries due to the resistance offered by these vessels. In the lungs, the pulmonary arterial pressure is lower compared to the systemic arterial pressure. The pressure in the pulmonary arteries ranges between 15 mmHg to 30 mmHg. During exercise, the pulmonary arterial pressure may increase, but it never exceeds the systemic arterial pressure.
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anyone say pls for my friend
needed quick
Answers
Answer:
1)a
Explanation:
A student observes that a plant has droopy leaves and stems and infers that the rate of photosynthesis has slowed in the plant. Which statement provides evidence to support the student’s inference?
Answers
Answer:
A. The water pressure in the plant's vacuole is low, and without water, the chloroplasts cannot convert carbon dioxide to glucose during photosynthesis.
Explanation:
Photosynthesis occurs on chloroplasts which are located on the surface of leaves. Photosynthesis is the conversion of carbon dioxide, water, and light energy to produce glucose and oxygen for plants.
The vacuoles inside the plant's cell contain stored food and absorb water through osmosis. Water in the vacuole has more solutes than water outside the vacuole. This causes the Turgor Pressure which the vacuole impacts on the plants. If the reverse becomes the case, water is lost from the vacuole causing it to shrink.
Flaccidity of the vacuole and the cell wall will cause the chloroplasts where photosynthesis occurs to shrink.
okazaki fragments are associated with the_____strand that demonstrates discontinuous nucleotide synthesis. these fragments are synthesized in the_____direction.
Answers
Okazaki fragments are associated with the lagging strand that demonstrates discontinuous nucleotide synthesis. These fragments are synthesized in the 5' to 3' direction.
During DNA replication, the lagging strand is synthesized in short, discontinuous fragments known as Okazaki fragments. This is because DNA polymerase can only synthesize DNA in the 5' to 3' direction. On the lagging strand, synthesis occurs in the opposite direction of the replication fork movement, resulting in the need for Okazaki fragments. These fragments are initiated by RNA primers that provide a starting point for DNA synthesis. DNA polymerase then elongates the fragments in the 5' to 3' direction, away from the replication fork. The fragments are eventually joined together by DNA ligase to form a continuous strand.
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How do you use the Hardy-Weinberg equation formula? I am pretty confused on how to apply some of the things... Thank you in advance :)
Answers
Answer:
i dont know wether this is right answer of your question or not but here yo go
Answer:
Trust the other guy :P
Explanation:
describe the experimental evidence used to identify dna as the genetic material, and to determine its structure.
Answers
The ability of viruses to spread from one cell to another (a process known as transformation) led to the experimental evidence that DNA was the genetic material that had pneumonia-causing germs.
What scientific proof is there that DNA is the genetic material?In 1952, Alfred Hershey and Martha Chase conducted a number of experiments that contributed to the realization that DNA is genetic material. The Hershey-Chase experiments are these investigations.
How was the DNA structure found out?Rosalind Franklin and Maurice Wilkins were conducting DNA research at King's College in London. Wilkins and Franklin's primary method was X-ray diffraction, which produced a shadow image of the molecule's structure based on how the X-rays rebounded off its constituent parts after passing through the molecule.
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PLLLLLLLLLLLLLLLLLLLLLLLLLLLLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS HELP!
DUE RIGHT NOW
You know we have a ‘leap year’ every 4 years in February right? Make a guess- do you think these dates are exactly the same every year? *Explain completely*
Answers
Regulating unconscious biological functions is a function of the __________. A. Medulla B. Pons C. Cerebrum D. Cerebellum.
Answers
Answer:
Regulating unconscious biological functions is a function of the medulla
Answer:
A. Medulla
Explanation:
Edge 2022
Why a decrease in the maturation of ovarian follicles may lead to reduced implantation rates
Answers
A decrease in the maturation of ovarian follicles may lead to reduced implantation rates because the maturation of ovarian follicles is essential for the release of mature eggs during ovulation. If the follicles do not fully mature, it can result in the release of immature or poor-quality eggs, which may have difficulty fertilizing and implanting in the uterus.
During the menstrual cycle, ovarian follicles develop and mature under the influence of hormones. The maturation process involves the growth and development of the egg within the follicle until it reaches its final stage of maturity. Once the follicle is fully mature, it ruptures, releasing the egg for potential fertilization.
If the maturation of ovarian follicles is compromised or delayed, it can lead to a decrease in the quality and viability of the eggs. This can negatively affect the chances of successful fertilization and implantation in the uterus, ultimately resulting in reduced implantation rates and decreased fertility.
Various factors can contribute to a decrease in the maturation of ovarian follicles, including hormonal imbalances, age-related decline in egg quality, certain medical conditions, or lifestyle factors.
Addressing these underlying causes and seeking appropriate medical interventions may help improve the maturation of ovarian follicles and increase the chances of successful implantation.
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although the x-linked recessive pattern of inheritance is consistent with the rare genetic condition observed in this family, due to the limited number of people in a family, sometimes multiple modes of inheritance are possible. therefore it is always important to consider other possibilities. for example, it is unlikely that inheritance is dominant because the patient’s mother is unaffected. why is autosomal recessive inheritance unlikely?
Answers
Autosomal recessive inheritance is unlikely in this case because the patient's mother is unaffected. Autosomal recessive inheritance occurs when an individual needs to inherit two copies of a recessive gene, one from each parent, in order to have the genetic condition.
If the mother is unaffected, it means she does not carry a copy of the recessive gene.
In the case of autosomal recessive inheritance, both parents must be carriers of the recessive gene. Carriers are individuals who have one copy of the recessive gene but do not show symptoms of the condition. When two carriers have a child, there is a 25% chance that the child will inherit two copies of the recessive gene and therefore have the condition.
Since the patient's mother is unaffected, it is unlikely that she is a carrier of the recessive gene. If she were a carrier, there would be a 50% chance that the patient would have inherited the gene from her and also be affected by the condition.
Therefore, based on the information provided, autosomal recessive inheritance is unlikely in this case. It is important to consider other possibilities, such as X-linked recessive inheritance, which is consistent with the rare genetic condition observed in this family.
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a physiological mechanism or other trait that is a product of evolution and is advantageous is called
Answers
A physiological mechanism or other trait that is a product of evolution and provides an advantage to an organism is called an adaptation. Adaptations are features or characteristics that enhance an organism's survival and reproductive success in its environment.
These traits have developed over time through natural selection, where individuals with advantageous traits are more likely to survive, reproduce, and pass on those traits to future generations. Adaptations can be structural, behavioral, or physiological, and they enable organisms to better cope with environmental challenges, obtain resources, avoid predators, or compete for mates. Overall, adaptations are key mechanisms through which organisms are able to thrive and adapt to their specific ecological niches.
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are viruses and bacteria single celled organisms?
Answers
Answer:
Viruses are not cellular organisms they are more like groups of genetic materials and proteins, this is unlike bacteria which are single-celled microbes that do not contain a nucleus.
Can someone tell me if this is correct
Answers
Answer:
Yes you are correct
Explanation:
You are testing different flavors of sodas to see which one has the most carbonation after the expiration date. What would be your independent variable? Room temperature Size of the bottle Carbonation Flavor of soda
Answers
Answer:
Flavor of Soda ofc
Explanation:
I took the test lol
The most carbonation after the expiration date is the Flavor of soda.
What is a carbonated beverage?
A beverage that's carbonated is fizzy, for example, ginger ale is a carbonated drink.
Anything that's defined as a soft beverage or soda is carbonated, tasting fizzy on your tongue. Club soda, seltzer, champagne, and sparkling water are all also carbonated.
Thus, the most carbonation after the expiration date is the Flavor of soda.
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small circular, extrachromosomal dna segments are known as _______.
Answers
Small circular, extrachromosomal DNA segments are known as plasmids.
Plasmids are self-replicating genetic elements that exist separately from the chromosomal DNA in a cell. They are commonly found in bacteria and some other organisms. Plasmids can carry additional genes that are not essential for the survival of the host organism but can confer advantageous traits such as antibiotic resistance or the ability to metabolize certain substances. These circular DNA molecules replicate independently and can be transferred between bacteria through horizontal gene transfer mechanisms like conjugation. Plasmids play a significant role in genetic engineering and biotechnology, as they can be manipulated and used as vectors to introduce specific genes into host cells for various purposes, such as gene expression studies or the production of therapeutic proteins.
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How does respiratory failure affect the body?
Answers
Answer:
lack of oxeygon
Explanation:
the brain will not get enough oxeygon , and you will die.
Did This help ???
Answer:there would be a lack of oxygen.
Explanation:
So you would die
How is a plaque similar to a bacterial colony?
Answers
Plaque similar to bacterial colony 1 virus replicates in a host and expands outwards to infect more and more cells germs multiply, spreading outward no bacterial lawn after one week of incubation; only dead cells No, a temperate phage.
Bacteriophage tail fibres attach to the proteins in cell walls. The host cell is infused with viral DNA. No coating is necessary. Lysogeny, cytoplasmic biosynthesis. lysing of the host cell. 2) Wildlife Plasma membrane proteins and glycoproteins serve as attachment sites. Capsid entry is mediated by receptor fusion or endocytosis. Enzymatic elimination of capsid proteins during uncoating. Biosynthesis in the cytoplasm or nucleus (DNA viruses) Cancer, sluggish viral infections, and latency. Nonenveloped viruses burst plasma membrane after being released through an enveloped virus' bud out.
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which statement is true about the evolution of maximum body mass of mammals after the cretaceous-paleogene mass extinction?
Answers
Mammals reached a weight of about 13 pounds within 100,000 years of the extinction event. By 300,000 years after their extinction, they reached a weight of 55 pounds (25 kg), becoming the first purely herbivorous mammalian species. Some mammals weighed more than 110 pounds by 700,000 years after the asteroid.
In the early Paleogene, which was the time after the Cretaceous, it appears from the bones of extinct mammals that they became more terrestrial. According to Professor Janis, the increase in understory vegetation is to blame. "Bushes and shrubs beneath the tree canopy were now a more suitable habitat for these small mammals," she claimed.
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Check every statement about the use of energy by
living things that is true.
Plants perform chemical reactions that
require energy.
Animals can use energy from the sun to
produce their own food.
Plants receive their energy from water in the
soil.
Animals can receive their energy by
consuming plants or other animals.
DONE
Answers
Answer:
The true statements about the use of energy by living things are:
1. Plants perform chemical reactions that require energy. This statement is true because plants undergo photosynthesis to produce their own food, which is a chemical process that requires energy.
2. Animals can receive their energy by consuming plants or other animals. This statement is also true because animals are heterotrophs, which means they obtain their energy by consuming other living organisms, either plants or animals.
The following statements are false:
1. Animals can use energy from the sun to produce their own food. This statement is false because only autotrophs, such as plants, can use energy from the sun to produce their own food via photosynthesis.
2. Plants receive their energy from water in the soil. This statement is false because while plants do absorb water from the soil, they receive their energy through photosynthesis, which requires sunlight.
Main difference between LeDoux and Papez concepts of emotions a. Papez does not include the hippocampus b. Papez does not include the amygdala c. LeDoux included the hypothalamus d. LeDoux did not show two routes from the thalamus
Answers
The main difference between LeDoux's and Papez's concepts of emotions is that LeDoux included the amygdala in his model while Papez did not. The correct option is B.
LeDoux's theory proposes that emotional processing occurs via two routes: a fast subcortical route involving the amygdala and a slower cortical route involving the neocortex. Papez's theory, on the other hand, proposed that emotional processing occurs via a circuit that includes the thalamus, hypothalamus, cingulate cortex, and hippocampus, but it did not include the amygdala. While both models proposed a role for the hypothalamus in emotional processing, LeDoux's model emphasized the amygdala's role in fear and emotional memory, while Papez's concept emphasized the hypothalamus's role in the regulation of visceral responses.
Therefore, the correct answer is b. Papez does not include the amygdala in his concept, while LeDoux's model includes the amygdala and its significance in emotional processing.
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discuss few important aspects about Decision Support System needed in this 21st century.
Provide and explain an example of Decision Support System.
For example, https://www.microstrategy.com/en
Answers
Decision Support System (DSS) is an interactive computer-based system that helps businesses and organizations make better decisions by providing actionable information, analysis, and insights. This system uses data analysis techniques, data mining, and simulation to support decision-making in complex situations.
There are several aspects of a Decision Support System that are important in the 21st century, some of them include:Data Integration: One of the most important aspects of DSS is its ability to integrate data from multiple sources, which helps to improve the quality of decision-making. This is crucial in the current era, where data is generated from various sources in huge quantities.Analytical Capabilities: DSS is equipped with analytical capabilities that help users to perform complex data analysis, including data mining, regression analysis, and simulation modeling. These analytical capabilities are critical in making sense of the large volumes of data generated by modern businesses.User-Friendly Interface: Another important aspect of DSS is its user-friendly interface that enables users to interact with the system easily and efficiently.
This aspect is important in the 21st century, where users expect to interact with technology in a simple and intuitive way.Collaboration Capabilities: DSS provides a platform for collaboration and knowledge sharing among users, which is crucial in complex decision-making processes.Example of Decision Support System:The MicroStrategy platform is an example of a Decision Support System. It is a comprehensive business intelligence platform that provides organizations with a range of analytical capabilities, including data mining, predictive analytics, and dashboarding. MicroStrategy enables users to integrate data from multiple sources, perform complex data analysis, and share insights with other users. It also provides a user-friendly interface that makes it easy for users to interact with the system.
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Rationalize on why a leaky heart valve might injure the heart overtime?
Answers
Over time, a leaking heart valve can harm the heart by increasing strain, enlarging the heart, and causing pulmonary hypertension, arrhythmias, as well as blood clots.
Mitral regurgitation, another name for a leaky heart valve, happens when the mitral valve malfunctions and opens improperly, enabling blood to travel backward into the left atrium of the heart. Over time, this may have several detrimental impacts on the heart:
Increased workload: The leaky valve increases the blood flow and pressure in the left ventricle, which can add to the heart's burden.
Heart enlargement: Over time, the heart may expand and weaken due to the greater strain, developing heart failure.
Pulmonary hypertension: The enlarged left ventricle may also result in enlarged pulmonary vessels and arteries, which would result in pulmonary hypertension.
Arrhythmias: A leaky valve may raise the chance of arrhythmias by altering the structure and operation of the heart. (abnormal heart rhythms).
Blood clots: Because of the leaky valve's instability, there is also a higher chance of developing blood clots, which can result in a stroke or other problems.
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5. What are virus hoaxes? Why are the hoaxes sometimes more dangerous than an actual virus?
Answers
Answer:
An actual computer virus is a malicious software, often known as malware, that can harm a computer and its users.
Virus hoaxes are false or misleading information about viruses that circulate through various communication channels.
They can be more dangerous than actual viruses due to their ability to spread quickly, cause panic, and undermine effective public health measures.
Virus hoaxes are deceptive messages or claims that often exaggerate the severity or impact of a particular virus. They can be spread through social media, email chains, or word of mouth. These hoaxes may include misinformation about symptoms, transmission methods, or false remedies, leading people to take ineffective or even harmful actions.
What makes virus hoaxes particularly dangerous is their potential to create panic and misinformation at a rapid pace. The viral nature of social media and other communication platforms allows these hoaxes to reach a wide audience within a short period. As a result, people may make decisions based on false information, such as avoiding necessary medical treatment, taking unnecessary precautions, or spreading fear and misinformation to others.
Moreover, virus hoaxes can undermine public health efforts by diverting attention and resources from legitimate preventive measures. They can erode trust in healthcare authorities and disrupt the dissemination of accurate information, making it harder for individuals to make informed decisions and follow recommended guidelines.
This can have severe consequences, especially during outbreaks or pandemics, where timely and accurate information is crucial for public safety. Therefore, it is essential to verify the credibility of information and rely on trusted sources to mitigate the risks associated with virus hoaxes.
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Which drug may also cause the spread of a AIDS and Hepatitis
Answers
Answer:
heroin
Explanation:
hope this helps
describe the parts of the synovial joint and state their functions?
Answers
Which organelle, found only in plant cells, has the function of storing starch?
Answers
Answer:
Explanation:
Plant Plastids are the only organelle Plant cells have that store starch
Plastids. Plant plastids are a group of closely related membrane-bound organelles that carry out many functions. They are responsible for photosynthesis, for storage of products such as starch, and for the synthesis of many types of molecules that are needed as cellular building blocks.
HELP???????????????????????????????
Answers
Answer:
B.) why do some materials rust more quickly than others
Question 9 (1 point) The term that describes the evaporation of water from plant stomata is OA A) Evaporation B) Precipitation C) Transpiration D) Perspiration
Answers
The term that describes the evaporation of water from plant stomata is transpiration. The correct option is C.
It is a natural process where water moves from the roots of a plant to its leaves and then evaporates into the atmosphere through small pores or openings called stomata. This process is essential for the survival of plants, as it helps in the absorption of nutrients and minerals from the soil.
Transpiration also plays a vital role in the water cycle, as it contributes to the movement of water in the environment. It helps in regulating the temperature and humidity levels in the atmosphere and plays a crucial role in the formation of clouds and precipitation.
Factors like temperature, humidity, wind, and sunlight affect the rate of transpiration in plants. In hotter and drier conditions, plants tend to lose more water through transpiration to cool themselves down. However, excessive transpiration can lead to water stress, affecting the growth and development of the plant.
In conclusion, transpiration is an essential process that helps in the survival of plants and contributes to the water cycle and the environment.
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A fictional animal, the tribble, reproduces in synchrony at regular intervals. When the growth rate of the population was plotted against time, the result was a straight and increasing line. Which statement about the tribble population is false? The r of the tribble population is constant and greater than 0 The λ of the tribble population is constant and greater than 1. The tribble population is increasing in size geometrically. If the actual population size were plotted against time, the result would be an increasing J-shaped curve.
Answers
The false statement is if the actual population size were plotted against time, the result would be an increasing J-shaped curve, option D is correct.
If the growth rate of the tribble population is plotted against time as a straight and increasing line, it indicates exponential growth, which is characteristic of geometric growth. In geometric growth, the population size increases at a constant rate over equal time intervals. This is consistent with statement C, which states that the tribble population is increasing in size geometrically.
Therefore, the actual population size plotted against time would also show an increasing J-shaped curve, as the population grows exponentially. Statements A and B are true, as they describe a constant and positive growth rate (r) and a constant and greater than 1 population growth factor (λ), respectively, which are expected in a population undergoing exponential growth, option D is correct.
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The correct question is:
A fictional animal, the tribble, reproduces in synchrony at regular intervals. When the growth rate of the population was plotted against time, the result was a straight and increasing line. Which statement about the tribble population is false?
A. The r of the tribble population is constant and greater than 0
B. The λ of the tribble population is constant and greater than 1
C. The tribble population is increasing in size geometrically
D. If the actual population size were plotted against time, the result would be an increasing J-shaped curve.