Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA
Answers
Explanation:
n 1952, Rosalind Franklin produced an image of DNA that suggested it contained two strands twisted in a double helix with a phosphate backbone and bases inside.Franklin calculated the diameter of DNA, the distance between strands and bases, the angle of the helix, and the number of bases per coil.Watson and Crick used this information to build and accurate model of DNA.
Answer:
here is the topic information
In 1952, Rosalind Franklin produced an image of DNA that suggested it contained two strands twisted in a double helix with a phosphate backbone and bases inside.
Franklin calculated the diameter of DNA, the distance between strands and bases, the angle of the helix, and the number of bases per coil.
Watson and Crick used this information to build and accurate model of DNA.
Explanation:
edg2020
Related Questions
Which of the following mutations will not result in a change to the amino acid sequence of a protein?
A)Frameshift mutation
B)Silent mutation
C)Neutral mutation
D)Nonsense mutation
Answers
Answer:
B)Silent mutation
Explanation:
A Silent Mutation is defined as a point mutation that does not change the amino acid. This occurs because more than one codon can code for the same amino acid. So while the protein was changed in the end there were no large-scale effects to the organism. This is why it is called a "silent" mutation because you cannot tell anything changes and there are no side effects.
Identity how the addition of acetyl groups to stones leads to a weaker association of DNA in nucleosomes. a Positively charged histones are able to interact with negatively charged phosphate groups of the DNA backbone. Addition of acetyl groups to histone heads weaken this interaction by reducing the positive charge on histones b Negatively charged histones are able to interact with positively charged phosphate groups of the DNA backbone. Addition of acetyl groups to historietails weakens this interaction by reducing the negative charge on histones c Positively charged histones are able to interact with negatively charged phosphate groups of the DNA backbone. Addition of acetyl groups to histone tails weakens this interaction by reducing the positive charge on histones. d Negatively charged histones are able to interact with positively charged phosphate groups of the DNA backbone. Addition of acetyl groups to histone heads weakens this interaction by reducing the negative charge on histones
Answers
The correct answer is: (c) . Positively charged histones are able to interact with negatively charged phosphate groups of the DNA backbone. Addition of acetyl groups to histone tails weakens this interaction by reducing the positive charge on histones.
Histones are proteins that play a crucial role in packaging DNA into a compact and organized structure called chromatin. DNA wraps around histone proteins to form nucleosomes, which are the basic repeating units of chromatin.
Histones have positively charged amino acids, such as lysine and arginine, that interact with the negatively charged phosphate groups of the DNA backbone through electrostatic interactions. This interaction helps in stabilizing the association between histones and DNA.
When acetyl groups are added to the histone tails, this process is known as histone acetylation. Acetylation involves the addition of acetyl groups to specific lysine residues on the histone tails. Acetylation neutralizes the positive charge on the histones, reducing their affinity for DNA.
As a result, the weakened interaction between histones and DNA allows for a more relaxed and open chromatin structure. This increased accessibility of DNA is associated with gene expression because it allows transcription factors and other regulatory proteins to bind to the DNA and initiate gene transcription. In other words, histone acetylation is generally associated with the activation of gene expression.
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Is human skull prokaryotic or eukaryotic?
Answers
Answer:
eukaryotic
Explanation:
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The human skull is Eukaryotic .
In the nitrogen cycle, where is nitrogen found as an element?.
Answers
In the nitrogen cycle, nitrogen is found as an element in various forms. The most common form of nitrogen is atmospheric nitrogen, which makes up about 78% of the Earth's atmosphere.
However, atmospheric nitrogen is not readily available for use by most organisms, so it needs to be converted into other forms. Nitrogen is also found in the soil, water bodies, and living organisms. In the soil, nitrogen can be found in the form of organic matter, such as dead plant and animal material, as well as inorganic compounds like ammonia and nitrate. In water bodies, nitrogen can be found in the form of dissolved nitrogen gas or as organic matter. In living organisms, nitrogen is found in proteins, nucleic acids, and other organic molecules. The nitrogen cycle involves the conversion of nitrogen from one form to another, making it available for use by different organisms in the ecosystem.
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Which excerpt from the passage "Equal Justice Under Law" most effectively illustrates Thurgood Marshall's natural tendency to resist authority?
"If he wasn’t throwing chalk or teasing girls, he was arguing with teachers."
"So, one day, the principal sent him to the basement with a copy of the United States Constitution and stern orders not to come back up till he had memorized a passage."
"'Before I left that school,” Marshall said many years later, 'I knew the whole thing by heart.'"
"Parts of the Constitution, however, confused the young Marshall."
Answers
Answer:A
Explanation:I took the test just now and that was the correct answer, goodluck :)
Answer:
The answer is a
hope this helps even though the other person already answered this and you asked it 10 hours ago :)
a higher ratio of oxygen-18 to oxygen-16 in ocean sediment core data generally indicates the occurrence of a (fill the blank)
Answers
A higher ratio of oxygen-18 to oxygen-16 in ocean sediment core data generally indicates the occurrence of a water cycle or about the past climate condition.
What is ocean sediment core ?A sediment core is a sort of sample that preserves the depositional sequence while capturing the stratigraphic strata in depth (younger sediments are at the top and older sediments are at the bottom).
What are oxygen 18 and oxygen 16?oxygen 18 and oxygen 16 are the naturally occurring stable isotopes of the oxygen. all of them have equal no of protons and neutrons in the nucleus but have different no. of electrons in their outer shell.
Hence, A higher ratio of oxygen-18 to oxygen-16 in ocean sediment core data generally indicates the occurrence of a water cycle or about the past climate condition.
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Which of the following statements about the relationship between ants and acacia trees is/are accurate? Check all that apply.
The ants protect the acacias from other insects. Incorrect
The ants protect the acacias from epiphytic plants and vines.
The ants live in the hollow thorns of the acacias.
The ants are provided with sugar or other nutrition by some species of acacia
Answers
The following statements about the relationship between ants and acacia trees are accurate the ants protect the acacias from epiphytic plants and vines, The ants live in the hollow thorns of the acacias and The ants are provided with sugar or other nutrition by some species of acacia (Option 2,3,4).
The relationship between ants and acacia trees is mutualistic. In this relationship, both the ants and acacia trees get benefits from each other. The ants live inside the hollow thorns of the acacia trees, and in return, they protect the trees from herbivorous animals, including insects and epiphytic plants and vines. The hollow thorns provide shelter for the ants from other insects and herbivores, as well as a food source. Additionally, the ants are provided with sugar or other nutrition by some species of acacia. These are nectar-producing glands on the leaf stalks and leaflets, extrafloral nectaries on the stems, and specialized protein and lipid-rich Beltian bodies on the leaflets.
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How are producers and consumers related?
Both producers and consumers are plants.
Both producers and consumers can be animals.
Both producers and consumers make their own food.
Both producers and consumers use energy that started from the sun.
Answers
Producers and consumers are related as both producers and consumers use energy that started from the sun.
What do you mean by Producers?Producers may be defined as the organisms which use the energy of the sunlight directly to synthesize their own food. They are always found at the root of each ecosystem.
Producers are plants while consumers are animals. Only producers can make their own food, while consumers can get their food by feeding on plants.
Producers directly use the energy from the sun, while consumers derived the energy from eating producers.
Therefore, producers and consumers are related as both producers and consumers use energy that started from the sun.
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Answer:
the answer is c hope this helps
Explanation:
5. What would happen if all of the bird types in this activity flew to an island where no birds had
been before and the only food available was rice? Which birds would be most successful? Which
birds would be least successful?
Answers
Answer:
the birds would either have two choices. they can eithe starve or they could adapt and eat the rice. they eventually would adapt if they wanted to stay alive and thrive or they would simply become extinct
Explanation:
If all of the bird types in this activity flew to an island where no birds had been before and the only food available was rice then they either starve or adapt and eat the rice.
What is adaptation?An adaptation can be defined as the heritable behavioral, morphological, or physiological trait which has evolved through the process of natural selection of a species, and maintains or increases the fitness of an organism of a species under a given set of environmental conditions and time.
In this activity, if all of the bird types flew to an island where no birds had been before and the only food available was rice then they either starve or they could adapt and eat the rice. However, they eventually would adapt if they wanted to stay alive on that island and thrive or they would simply become extinct.
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Which of the following types of cells have a phospholipid bilayer cell membrane?
Answers
Answer: The nucleus, mitochondria and chloroplasts have two lipid bilayers, while other sub-cellular structures are surrounded by a single lipid bilayer (such as the plasma membrane, endoplasmic reticula, Golgi apparatus and lysosomes).
Hope this helps..... Stay safe and have a great day/night!!!!! :D
Questions are in the photo. Thank you very much!
Answers
26) The type of mutation that happened in the Albino Moth DNA when compared to the Light Moth DNA is a point mutation.
What is mutation?Mutation is a process in which a gene or a section of DNA is altered, resulting in a different sequence of genetic information. This change can affect the structure and function of an organism.
Point mutations are single-nucleotide changes in the DNA, which can cause a change in the phenotype of an organism. The evidence for this is the fact that the Albino Moth has a different phenotype than the Light Moth, indicating that the genetic material is different between the two.
27) The type of mutation found in the Dark Moth DNA when compared to the Light Moth DNA is a substitution mutation. A substitution mutation is a change in a single nucleotide in the DNA, which can cause a change in the protein that is produced. The evidence for this is the fact that the Dark Moth has a different phenotype than the Light Moth, indicating that there is a difference in the genetic material between the two.
28) The evidence from Question #25 that there is a change in phenotype between the Light Phenotype and the Dark Phenotype is the difference in color between the two phenotypes. The Light Phenotype has lighter colored wings, while the Dark Phenotype has darker colored wings. This suggests that there is a difference in the genetic material between the two phenotypes, which is likely responsible for the difference in color.
29) The structure of DNA determines the structure of a protein by providing the instructions for the creation of a specific protein. The sequence of the DNA is translated into a specific amino acid sequence of a protein, which in turn determines the shape and function of the protein. The evidence from the data seen on the moths in this test is that the Light Moth and Dark Moth have different phenotypes, which suggests that the proteins produced by the two moths are different.
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port-wine birthmarks, which are caused by malformed capillaries close to the skin, can be removed with laser pulses. laser light of the right color will pass through the skin with little absorption but will be strongly absorbed by oxyhemoglobin in the blood of these capillaries, which destroys them without damaging adjacent tissue. a typical system uses a series of 6900 w pulses of 585 nm laser light. each pulse lasts 0.45 ms . part a how many photons are in each pulse?
Answers
The energy of a photon can be calculated using the equation; E=hc/λ, where E is the energy of the photon, h is Planck's constant, c is the speed of light in vacuum, and λ is the wavelength of the radiation. Using this formula, we can calculate the number of photons in each pulse.
Convert the wavelength of the laser light to meters.
1 nm = 10-9 m585 nm = 585 x 10-9 m = 5.85 x 10-7 m.
The energy of a photon can be calculated asE = hc/λE = (6.626 x 10-34 J s)(2.998 x 108 m/s)/(5.85 x 10-7 m)E = 3.413 x 10-19 J.
The power of each pulse is given as 6900 W, and each pulse lasts for 0.45 ms.
Power = Energy / Time 6900 W = Energy / 0.00045 s
Energy = 6900 W × 0.00045 sEnergy = 3.105 J.
Therefore, the number of photons in each pulse is given by: Number of photons = Energy of pulse/Energy of one photon. A number of photons = 3.105 J/3.413 x 10-19 J/photon.
A number of photons = 9.10 x 1019 photons/pulse
Answer: There are 9.10 x 10^19 photons in each pulse.
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Which part of an atom is
found outside the nucleus?
A. Electrons
B. Neutrons
C. Protons
Answers
Answer:
electrons
Explanation:
henry has a mutation in the gene that codes for a certain blood protein. however, these proteins function normally. what best explains how this is possible?
Answers
A silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein.
For example For example, AAA (codes for the amino acid lysine, Lys) being mutated to AAG (which also codes for Lys).
Choose claim a or b and explain based on your new found understanding
If an object sinks in water and has a mass of 20kg you know that:
A. The volume of the object is more then 20L
B. The volume of the object is less then 20L
Answers
Answer:
A. The volume of the object is more then 20L
Explanation:
Density of a substance is calculated by dividing its mass by its volume. According to this question, an object of mass 20kg is involved. A volume of 20Litres is 0.02 millilitres (mL). This means that the density of an object with volume 0.02mL is 20kg/0.02 = 1000kg/mL.
However, an object will only sink in water if it's density is higher than that of water, which is 1000kg/mL. This means that for the object in this question to sink, its density must be more than 1000kg/mL. This applies to scenario A i.e volume of the object must be more then 20L to have a density higher than 1000kg/mL.
Cornell University recently conducted a study that estimated that honeybees pollinate more than $14 billion worth of crops each year. The study suggested that nearly seventy-five percent of all global crops that are grown for food, fiber, beverages, condiments, spices, and medicines are pollinated. Produced with the help of pollinators, agricultural products including legumes, vegetables, fruits, berries, nuts, herbs, spices, oils, seeds, grains, clover, and cotton make a significant contribution to the economy. As the human population increases, so does the demand for pollination; sadly, the honeybee population is decreasing. Within the past thirty years, parasites, predators, and disease have weakened both wild and managed populations of honeybees. In fact, around the globe, honeybees are being decimated by an epidemic known as colony collapse disorder (CCD).
According to this article, who collected information to research the honeybees?
Answers
Answer:
Cornell University collected the information used to research the honeybees.
question!
What type of organelle would be found in high amounts in a leaf cell?
another question,
What type of organelle would be found in high amounts in a muscle cell?
Answers
For the Muscle cell I’m pretty sure it’s a mitochondria
Which is the greatest consequence of transcription being blocked in the nucleus
Answers
Answer: The DNA would not be copied into RNA
Which carboyhydrate can be used by the body as an immediate source of energy?
Answers
Answer:
Glucose
Explanation:
muralidharan k, yekula a, small jl, et al. tert promoter mutation analysis for blood-based diagnosis and monitoring of gliomas. clin cancer res. 2021; 27: 169–78.
Answers
The article "TERT promoter mutation analysis for blood-based diagnosis and monitoring of gliomas" by Muralidharan et al. provides insights into the potential use of TERT promoter mutations as a diagnostic and monitoring tool for gliomas.
The mentioned article, authored by Muralidharan et al., explores the role of TERT (telomerase reverse transcriptase) promoter mutations in the diagnosis and monitoring of gliomas, a type of brain tumor. TERT promoter mutations have been identified as common genetic alterations in gliomas, and this study aims to investigate their potential utility as blood-based biomarkers.
The researchers conducted an analysis of TERT promoter mutations and their correlation with glioma development and progression. The article likely discusses the methodology used for detecting these mutations in blood samples, as well as the potential clinical implications and limitations of using TERT promoter mutations as diagnostic and monitoring markers for gliomas.
The findings of the study, which are summarized in the article, can contribute to the development of non-invasive methods for diagnosing and monitoring gliomas, which could improve patient outcomes and treatment strategies. It is important to refer to the original article, published in Clinical Cancer Research in 2021, for a comprehensive understanding of the research methodology, results, and implications discussed by Muralidharan et al.
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The complete question is:
Write about the article "muralidharan k, yekula a, small jl, et al. tert promoter mutation analysis for blood-based diagnosis and monitoring of gliomas. clin cancer res. 2021; 27: 169–78".
Punnett's Squares
These show the 2 alleles of each parent plant crossed with each
other and the resulting 4 possible offspring with T= tall, = short.
TT = dominant tall, 17 = recessive short, Tt = mixed hybrid
TT = dominant tall (genotype tall, phenotype tall)
Tt = mixed hybrid (genotype hybrid, phenotype tall)
tt = recessive short (genotype short, phenotype short)
Using the Punnett's Squares below, name the offspring of all possible parent combinations
Answers
Answer:
All answers are in the image
What is the correct order for respiration?
Answers
2. Krebs cycle
3. Electron transport chain
In order for our cells to metabolism N2 into 2NH3, a total of _____________ ATP is required.
Answers
We have the complete statement to be "In order for our cells to metabolism N2 into 2NH3, a total of 8 ATP's is required"
What is adenosine triphosphate ATP?Generally, The full meaning of the short form ATP is adenosine triphosphate, This is simply an energy-bearing molecule that can be found in the cells of living things.
In conclusion, We see that in the cell of humans, for our cells to metabolism N2 into 2NH3 we tend to use up at least eight adenosine triphosphate for the process
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ab Moving to the next question prevents changes to this answer. estion 8 Buia difier loem iaformation in which way? 1. There is no difference 11. Infirmason is dies organiscd to provide meanises 1ii, Data aro facis aboit a sale W. Bata are mearingful bita of information
Answers
The correct option is B, which is "Information" is organized to provide meaning. Data can be explained as raw and unorganized facts and figures that need to be processed before they can be considered as information.
Therefore, information is data that has been collected, analyzed, organized, and presented in a meaningful way. Thus, the statement "Information is organized to provide meaning" is accurate. Furthermore, data is considered to be objective and without meaning.
It is in a format that can be sorted, evaluated, and analyzed by a computer or an individual. On the other hand, information is subjective and meaningful and can be conveyed and interpreted by people.
However, data can be processed to obtain information. Data is transformed into information when it is analyzed, organized, interpreted, and presented in a meaningful and useful way.
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Matching *
4 points
Manipulated
variable
The variable a
researcher is
measuring
A procedure
Data that can be carefully done to
counted or examine the
measured validity of a
hypothesis
Experiment
Quantitative Data
Dependent
Variable
Independant
Variable
Answers
in an ecosystem which would have a bigger population: producers or primary consumers
PLEASE HELP
Answers
Answer:
The answer would-be producers. The fact that there are primary consumers today, you would know that producers make up the bigger population. If it were smaller, the primary consumers would have eaten them all up and eventually would die out because they would have no more food source. This would be bad for all higher-level consumers.
What model aims to understand how foragers gather food with the least expenditure of time, calories, and other factors
Answers
The model that aims to understand how foragers gather food with the least expenditure of time, calories, and other factors is called Optimal Foraging Theory.
Optimal Foraging Theory is a framework used to study the foraging behavior of animals and how they make decisions about where and how to search for food. The theory suggests that animals will try to maximize their energy intake while minimizing the energy expenditure required to obtain food.
In order to achieve this, foragers will make decisions based on factors such as the abundance and distribution of food resources, the energy content of different food items, and the costs associated with searching and handling food. By using this information, foragers can determine the most efficient strategies for obtaining food.
Overall, Optimal Foraging Theory helps to explain how animals adapt their foraging behavior to optimize their energy gain, taking into account various ecological and environmental factors.
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BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST
Answers
Answer:
Correct Answer is A.
Explanation:
A. The air sacs remove carbon dioxide from the blood vessels
What is the major different between the particles in a liquid and a gas of the same substance at the same temperature? a The particles in the gas are moving faster than the particles in the liquid b The particles in a liquid are still connected, but the particles in a gas have separated from each other and now fly around to fill the container c The particles in the liquid have higher masses than the particles in the gas d The particles the gas are separated, so they absorb less heat than nor
Answers
The major difference between the particles in a liquid and a gas of the same substance at the same temperature is that; the particles in the gas are moving faster than the particles in the liquid.
There are three states of matter which are;
SolidLiquidGasThe difference between the states of matter lies in;
Degree of inter molecular interaction between molecules in a given state of matterKinetic energy of the molecules in a given state of matter.Liquid molecules or particles are slower than gas particles because liquid particles have a greater degree of inter molecular interaction than gas particles.
So, the difference between a liquid and a gas at the same temperature is that; "the particles in the gas are moving faster than the particles in the liquid".
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Answer:
Particles in a: gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Explanation:
Bio mass requires a lot of space, is this an advantage or disadvantage?
Answers
Answer:
i think disadvantage
Explanation: