which phrase is a result of a scientific law
Answers
Answer:
Archimedes' Principle of Buoyancy.
Hooke's Law of Elasticity.
Bernoulli's Law of Fluid Dynamics (Bernoulli's Principle)
Dalton's Law of Partial Pressures.
Fourier's Law of Heat Conduction.
Explanation:
Related Questions
A large, isolated, randomly mating population of brown and blue eyed individuals is 20% blue eyed. Keeping in mind that blue eyes is the homozygous recessive condition, in this population what is the frequency of the brown eyed allele (i.e., brown yes results from both the homozygous dominant or heterozygous condition)? (assume that the effects of selection and mutation are negligible) (choose best answer) 0.45 0.55 0.65 0.75 0.85 0.95
Answers
The frequency of the brown-eyed allele (p) is 0.55. The correct answer is option B : 0.55.
The frequency of the blue-eyed allele can be calculated using the Hardy-Weinberg equation: p^2 + 2pq + q^2 = 1, where p is the frequency of the dominant allele (brown-eyed) and q is the frequency of the recessive allele (blue-eyed).
Given that the population is randomly mating and 20% of the population is blue-eyed, we can plug in q^2 = 0.20 and solve for q:
q^2 = 0.20
q = sqrt(0.20) = 0.45
Thus, the frequency of the blue-eyed allele (q) is 0.45.
Since p + q = 1, we can solve for p:
p = 1 - q
p = 1 - 0.45
p = 0.55
Therefore, the frequency of the brown-eyed allele (p) is 0.55.
The answer is: 0.55.
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Q5.
Figure 1 shows guard cells around open stomata magnified 800 times.
(b) The image size of one of the guard cells is 26 millimetres long.
Calculate the real length of the guard cell in micrometres.
Include the equation you are using to calculate your answer.
Answers
The real length of the guard cell in micrometers would be 32.5 micrometers.
1 millimeter = 1000 micrometer.
Magnification problemThe guard cell has been magnified 800 times.
Assuming the real size of the guard cell is x:
800x = 26 millimeter.
Solve for x:
x = 26/800
= 0.0325 millimeter.
Meaning that the real length of the guard cell is 0.0325 millimeters.
Now, let's convert this size to micrometers.
1 millimeter = 1000 micrometer
Thus,
0.0325 millimeter = 1000 x 0.0325
= 32.5 micrometers.
The real length of the guard cell in micrometers is 32.5 micrometers.
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this plate contains macconkey medium, which only allows the growth of gram-negative bacteria. how can macconkey medium be classified?
Answers
MacConkey medium can be classified as differential and selective.
MacConkey medium is a bacterial medium developed by the bacteriologist A. T. MacConkey.This medium (MacConkey medium) only allows the growth of gram-negative bacteria.The gram-negative MacConkey medium can be differentiated regarding lactose metabolism.In conclusion, the MacConkey medium can be classified as differential and selective.
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in the sense of alternation of generations, how many generations are included in a mature pine seed?
Answers
In the sense of alternation of generations, there are two generations included in a mature pine seed: the sporophyte generation and the gametophyte generation.
The sporophyte generation is the dominant phase in the life cycle of the pine seed, and is characterized by the presence of a multicellular, spore-producing structure, such as a cone or a seed. This structure contains the mature sporophytes, which produce the male or female gametophytes through meiosis.
The gametophyte generation, in turn, is characterized by the presence of tiny, single-celled structures called gametes, which are specialized for reproduction. These gametes eventually give rise to the next generation of sporophytes.
The alternation of generations is a fundamental aspect of the life cycle of many plants, including pines, and is crucial for their survival and reproduction. The presence of two generations, each with distinct characteristics and functions, allows for efficient production and dispersal of offspring, ensuring the continuation of the species over time.
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Earth scientists study the history of the earth. What are some ways that they determine the age of the earth or geologic features (for example, what did William Smith do?)? Which techniques are most accurate to help with this process? How has our understanding of the age of the earth changed over time
Answers
Answer:
To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
Explanation:
( please help) What type of mutation is shown in the diagram above?
A. Inversion
B. Insertion
C. Deletion
D. Point
Answers
Answer:
D.
Explanation:
I think it may be point because only one section is changing.
A scientist designed an experiment to test the effect of temperature on bacterial growth. He grew three different cultures of the bacterium e. Coli under three heat lamps at different temperatures. What was the independent variable in this experiment?.
Answers
A scientist designed an experiment to test the effect of temperature on bacterial growth. The independent variable in this experiment was temperature.
What is the bacterial growth?The outcomes display that microbes have a better increase price at 20, 25 and 30°C and 30°C than at 3°C. In general, an boom in temperature will boom enzyme pastime. But if temperatures get too excessive, enzyme pastime will reduce, and the protein (the enzyme) will denature.
General, the better the temperature, the greater without problems microorganisms can develop as much as a sure point. Very excessive and coffee temperatures each impede the enzyme strategies microorganisms rely on to survive.
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What is used to resect the prostate tissue through the resectoscope?
Answers
Which statement explains what happens at the water table?
Water rises to a place above the surface where people can collect it and use it for drinking water.
Materials such as clay or granite prevent water from seeping into the ground at the water table.
A boundary forms between an area filled with water and an area with both moisture and air.
Water from rivers, lakes, and streams seeps into the ground and saturates it to reach the water table.
Answers
Answer:
1.
Water rises to a place above the surface where people can collect it and use it for drinking water. Materials such as clay or granite prevent water from seeping into the ground at the water table. A boundary forms between an area filled with water and an area with both moisture and air.
Answer:
the answer is C
Explanation:
Messenger RNA is the carrier of information from DNA to the ribosomes in the cytoplasm, where proteins are synthesized. The RNA
is transcribed from a DNA template. A special enzyme is involved in separating the two strands of the DNA molecule apart and
then hooks the RNA nucleotides together as they base pair along the DNA template. The special enzyme involved in this process is
called
A)
DNA primase
B)
DNA polymerase
RNA polymerase.
D)
helicase.
a promoter
Answers
Answer:
b.) DNA polymerase
Explanation:
Answer:
Helicase (D.)
Explanation:
I am 100%sure that the answer is D because helicase is the enzyme that unzips dna. Also, I know this because I just took the usatestprep quiz and got this question right.
-yw
how is the energy stored in polysaccharides mobilised?
Answers
Plants store carbohydrates in long polysaccharides chains called starch, while animals store carbohydrates as the molecule glycogen. These large polysaccharides contain many chemical bonds and therefore store a lot of chemical energy.
Since these large polysaccharides have many chemical bonds, they can store a lot of chemical energy. Whenever these compounds are decomposed all through metabolic activities, the energy in the chemical bonds is released and can be used by cells.
What is a polysaccharide?Polysaccharides are important types of biomolecules. They are long chains of carbohydrate molecules made up of many smaller monosaccharides.
Many polysaccharides are used by organisms to store energy. While energy-producing enzymes only work on monosaccharides stored in polysaccharides, polysaccharides generally fold together and they may contain many monosaccharides in a dense area.
The high energy carbon-hydrogen covalent bonds between the monomers in a polysaccharide store the energy.
The breaking of these bonds is what causes the energy used to generate ATP to be released. The higher the energy content of the polysaccharide, the more of these bonds there are.
Thus, this way, the energy stored in polysaccharides is mobilized.
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You have been contacted by a government official, who is looking to spend 5 million USD of overseas aid funding to benefit human welfare by protecting an ecosystem. They wish to use the money to protect and or / restore an area of land (or sea), in collaboration with local communities. They would like your help to decide which ecosystem type (suggestions listed below) would lead to the greatest benefit in terms of human health, equality and wellbeing.
Your task is to write a persuasive letter, arguing for the benefits of your chosen ecosystem. The official will be best convinced by:
An ecosystem services approach, using correct terminology
Clear evidence based (rather than emotional / value based) arguments
Clearly demonstrated correct scientific understanding (e.g. of the carbon cycle)
Specific studies, giving measured estimates of ecosystem services in particular locations (e.g. specific quantities of carbon stored or water purified, for example) - correctly cited
Ecosystems that store large quantities of carbon, since climate change mitigation is a priority.
Solutions that benefit disadvantaged communities (economically disadvantaged or excluded from decision making processes)
Reliable sources, carefully selected and evaluated
Once they have read and considered all your arguments, they will choose to use the funding to enhance protection or restoration of one type of ecosystem.
Answers
The coastal region is chosen to be remediated by the government's incentive, because the mangrove vegetation, mainly its root system, is capable of reducing the impact of sea water on coastal regions, protecting coastal cities against the effects of tidal erosion , storms, sea level rise, and even tsunamis.
The mangrove and its biodiversity: why preserve it?Thinking about the preservation of the forests, we decided to develop our project highlighting the riparian forests, specifically the mangrove. The mangrove is an ecosystem that develops in tropical regions, where fresh and salt water meet, thus forming brackish water. The mangroves are made up of three types of trees — they are: the red mangrove, the white mangrove and the black mangrove — and can therefore be considered a forest.
In it we will find animals that serve as food and sustenance for many people, and the preservation of its fauna and flora is of great importance for the sustainability of this forest and the individuals who need it.
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You are speaking to an 8th grade class about health prevention and are preparing to discuss the ABCDEs of melanoma. Which of the following descriptions correctly defines the ABCDEs?
A) A = actinic; B = basal cell; C = color changes, especially blue; D = diameter >6 mm; E = evolution
B) A = asymmetry; B = irregular borders; C = color changes, especially blue; D = diameter >6 mm; E = evolution
C) A = actinic; B = irregular borders; C = keratoses; D = dystrophic nails; E = evolution
D) A = asymmetry; B = regular borders; C = color changes, especially orange; D = diameter >6 mm; E = evolution
Answers
The correct definition for ABCDEs of melanoma is option B) A = asymmetry; B = irregular borders; C = color changes, especially blue; D = diameter >6 mm; E = evolution.
The ABCDEs of melanoma are helpful when observing a mole or a spot on your skin to determine if it could be cancerous. Each letter of the acronym is a different feature to look out for when assessing a mole. The features include: Asymmetry Irregular Borders Color Changes Diameter Greater than 6 millimeters Evolution The ABCDEs of melanoma is a list of symptoms to look for that could be indicative of melanoma.
If you notice any of the symptoms or are worried about a mole, it's a good idea to see a dermatologist or your primary care physician.
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What do proteins, nucleic acids, and carbohydrates all have in common?
A. They all use peptide bonds to form macromolecules.
B. They all contain the instructions for building organisms.
C. They are all formed from the same elements. D. They are all made of chains of amino acids.
Answers
Answer:
c)they are all formed from the same elements
Explanation:
that is carbon,hydrogen and oxygen but e.g proteins have additional like Nitrogen
The biome to which all of these organisms would be best adapted is the -
Answers
Answer:
Explanation:
Nucles h
What is the product of this equation?
2502 + 02 › 2503
Answers
State one similarity and one difference between parasitic and predatory modes of feeding
Answers
Answer:
One similarity between parasitic and predatory modes of feeding is that both involve the ingestion of other organisms for nutrition. In both cases, the organisms that do the feeding (the parasites or predators) obtain their food from other organisms (the host or prey), which they consume and use to nourish themselves.
One difference between parasitic and predatory modes of feeding is the relationship between the predator and its prey. In predatory feeding, the predator and its prey are typically separate and distinct organisms, and the predator actively hunts and kills its prey for food. In parasitic feeding, the parasite and its host are typically closely associated, and the parasite typically lives on or inside the host, feeding off of its nutrients or tissues. This relationship between the parasite and its host is often harmful to the host, while the relationship between the predator and its prey is typically not harmful (as long as the predator is not over-consuming its prey).
What role does cellular respiration play in the water cycle?
It removes H2O from the atmosphere during glycolysis.
It removes H2O from the atmosphere during acetyl CoA formation.
It releases H2O to the atmosphere during the citric acid cycle.
It releases H2O to the atmosphere during electron transport.
Answers
Answer:
It removes H20 from the atmosphere during glycolysis.
18. The gravitational pull between two objects is determined by what two factors?
a. ____________
b. ____________
Answers
Answer:
It is determined by the mass & distance. I hope this helps you! :)
What body system are capillaries from? Provide evidence from the internet. (This can be a short sentence lol)
A) Respiratory System
B) Muscular System
C) Reproductive System
D) Circulatory System
E) Digestive System
F) Nervous System
G) Excretory System
H) Endocrine System
I) Skeletal System
J) Immune System
Answers
Answer:
Circulatory System
Explanation:
Capilaries are tubes that transport blood and provide nutrition through diffusion in tissues. Transporting blood is a function of the circulatory system.
SPEED 8. European moles and Sumatran tigers both have eyes. However, European moles live completely in the dark and have very small eyes, while Sumatran tigers have large eyes that can see prey from far away. What most likely explains why both European moles and Sumatran tigers have eyes and why their eyes are different?
Answers
Answer:
What most likely explains why both European moles and Sumatran tigers have eyes and why their eyes are different? European moles and Sumatran tigers both have eyes. However, European moles live completely in the dark and have very small eyes, while Sumatran tigers have large eyes that can see prey from far away.
Explanation:
European moles live completely in the dark and have very small eyes, while Sumatran tigers have large eyes that can see prey from far away.
hope this helps :)
They both have different eye structures that are due to natural selection, and they both get adapted with the best shape of eyes that help them survive: the European moles have small eyes due to their underground nature, while the Sumatran tigers have large eyes.
What is the significance of the different eye shapes?Different animals have different eyes, and it depends upon their area of living, here, the eyes of European moles are small because they live underground and have less need for vision, so they have small eyes. Sumatran tigers have large eyes because they need to see prey from a distance in order to survive, so they have better vision, but it depends on the environmental pressure.
Hence, they both have different eye structures that are due to natural selection, and they both get adapted with the best shape of eyes that help them survive: the European moles have small eyes due to their underground nature, while the Sumatran tigers have large eyes.
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suppose you were to activate a skeletal muscle fiber that is at a very short length such that the thin filaments from opposite sides of the sarcomere ran into each other and the m-line? what would happen to skeletal muscle fiber force production at that length when an action potential was generated?
Answers
Skeletal muscle fiber force production at that length when an action potential was generated will the sarcomeres would generate very little force.
The fundamental unit of contractility for muscle fiber is the sarcomere. Actin and myosin, the active components involved in muscle contraction, make up each of the two primary protein filaments that make up a sarcomere.
In skeletal muscle, the sarcomere serves as the primary contractile unit of muscle fiber. The thick filaments known as myosin and the thin filaments known as actin make up the majority of each sarcomere's protein filaments (myofilaments).
Because the actin and myosin filaments that drive skeletal and cardiac muscles' contraction are arranged into repeating arrays called sarcomeres, which have a striated microscopic appearance, these muscles are referred to as striated muscles.
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the term describes the appearance of a cloudy broth culture.
Answers
The term that describes the appearance of a cloudy broth culture is "turbidity." Turbidity refers to the cloudiness or haziness of a liquid, which, in this case, is the broth culture. The cloudiness is typically caused by the presence of a large number of microorganisms growing in the liquid medium.
The term that describes the appearance of a cloudy broth culture is turbidity. Turbidity is caused by the presence of suspended particles, such as bacteria or other microorganisms, in the liquid medium. When a broth culture becomes cloudy, it indicates that the microorganisms have grown and multiplied within the medium, making it difficult to see through.
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Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem soil degredation Services -
Answers
In order to improve the science-policy interaction for biodiversity and ecosystem services for the conservation and sustainable use of biodiversity, States formed the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES).
IPBES is tasked with conducting timely and routine assessments of the body of knowledge regarding biodiversity, ecosystem services, and the connections between them on a global scale.
What is Biodiversity and ecosystem ?The variety of animals, plants, fungi, and even microorganisms like bacteria that make up our natural environment are all included in what is known as biodiversity. These various species and critters collaborate in complicated web-like ecosystems to keep things in balance and support life.
By raising the possibility that species would use complementary resources and by increasing the likelihood that a particularly productive or efficient species is present in the population, increasing species diversity can influence ecosystem functions, such as productivity.Learn more about Biodiversity and ecosystem here:
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1.
The fox population in a certain region has an annual growth rate of 5 percent per year. It is estimated that the population in the year 2000 was 23500 . (a) Find a function in the form \( P(t)=a b^{t}
Answers
The fox population can be modeled using an exponential growth function of the form P(t) = ab^t, where P(t) represents the population at time t, a is the initial population, b is the growth factor, and t represents the number of years.
In this case, the population in the year 2000 was given as 23500. We can use this information to find the values of a and b in the exponential growth function. Since the population has an annual growth rate of 5 percent, the growth factor (b) would be 1 + growth rate = 1 + 0.05 = 1.05.
To find the value of a, we substitute the given population value for the year 2000 into the exponential growth function: P(0) = ab^0 = a(1.05)^0 = a. Therefore, a = 23500.
Now we have the values of a and b, and the exponential growth function for the fox population becomes P(t) = 23500 * (1.05)^t, where t represents the number of years since the year 2000.
This function can be used to estimate the fox population for any given year after 2000 by substituting the desired value of t into the equation.
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When the genetic material found within an offspring is diverse, what type of reproduction is responsible?
a
Sexual reproduction, because the genetic material comes from both parents
b
Sexual reproduction, because the genetic material comes from one parent
c
Asexual reproduction, because the genetic material comes from both parents
d
Asexual reproduction, because the genetic material comes from one parent
Answers
Answer:
a
Explanation:
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Which vessels are highlighted? which vessels are highlighted? superior and inferior vena cava right and left coronary arteries pulmonary veins pulmonary arteries
Answers
According to the given image the vessels are highlighted as pulmonary veins.
The correct option is A.
What are the purposes of the pulmonary veins?Your pulmonary veins carry blood that is rich in oxygen. Different directions are taken by them. Blood travels from your heart through your pulmonary arteries to your lungs. Blood travels through your pulmonary veins from your lungs to your heart.
The location of the pulmonary vein:Along with the pulmonary arteries, the pulmonary veins are connected to the pericardium. At the lung's root, the right superior pulmonary vein crosses over and slightly below the pulmonary artery, while the inferior pulmonary vein is located at the lowest point of the lung hilum.
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I understand that the question you are looking for is:
Which vessels are highlighted?
A. pulmonary veins
B. right and left coronary arteries
C. superior and inferior vena cava
D. pulmonary arteries
List two reasons the death rate fell in industrial countries in the 1800s.
Answers
The improved living standards in industrial countries, as well as improvements in medical knowledge and public health practices, were two key reasons why the death rate fell in the 1800s.
In industrial countries in the 1800s, there were two reasons the death rate fell. These reasons are as follows:Improved living standardsImprovements in medical knowledge and public health practicesImproved living standardsIn the 1800s, industrialization led to improved living standards in industrial countries. This change brought about significant benefits, such as better nutrition, improved sanitation, better housing, and cleaner water. Due to improved living standards, the death rate fell significantly. People were less likely to contract diseases, and those who did were more likely to survive due to better living standards.Improvements in medical knowledge and public health practicesImproved medical knowledge and public health practices also contributed to the fall in death rates in industrial countries. The practice of vaccination, for example, became widespread, and it helped to prevent infectious diseases from spreading. Medical researchers also made significant breakthroughs in treating illnesses like tuberculosis and pneumonia, which had been killing thousands of people in previous decades.
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What are the hair-like extensions used like oars to propel the protists to nutrients?
Answers
Answer:
Cilia
Explanation:
Cilia are the hair-like extensions used like oars to propel protists. They move in a wave-like pattern to move the protist.
Cilia are hair-like extensions used like oars to propel the protists to nutrients.
in the sense of alternation of generations, how many generations are included in a mature pine seed?
Answers
In a mature pine seed, there are two generations of cells included. The first generation of cells is the diploid generation, which contains two sets of chromosomes.
What is diploid generation?Diploid generation is the stage of a life cycle in which an organism has two sets of chromosomes. This is the most common type of generation for eukaryotes, which are organisms with complex cells that contain a nucleus. During diploid generation, organisms contain two copies of each chromosome, one copy from each parent. This stage is preceded by the haploid generation, which contains only one set of chromosomes, and followed by a meiotic generation, during which the chromosomes replicate and recombine.
This generation is responsible for the production of haploid cells, which contain only one set of chromosomes. The haploid cells then divide to form the second generation of cells, which are the haploid spores. These spores can then go through another cycle of division to form a new diploid generation, which starts the cycle again. Thus, there are two generations of cells included in a mature pine seed.
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