Answers
The basic idea is to use a graph plotting Absorbance vs. Concentration of known solutions. Once you have that you can compare the absorbance value of an unknown sample to figure out its concentration.
You will compute the concentration using Beer's law.
Beer's law is expressed as A = mCl.
(A = absorption, m = molar extinction coefficient, C = concentration, and l = 1 cm path length)
You ought to have the data set that was employed to build the standard curve. Concentration (an independent variable) should be shown on the x-axis of the graph, and absorption (a dependent variable) should be shown on the y-axis.
You must choose the equation for the line and add a line of best fit to the data points. The formula for the equation should be y=mx + b.
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Related Questions
According to the diagram how are the three components
of a nucleotide important to the structure of DNA?
Answers
Answer:
A nucleotide of DNA is made up of three parts: a nitrogenous base, a 5-carbon sugar, and a phosphate group. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
The phosphate group linked with deoxyribose sugar to make the framework for the nitrogenous bases. The phosphate group and sugar molecule make the DNA backbone and support it. These backbones hold nitrogenous bases and make a monomer of DNA. Nitrogenous bases make DNA stable and hold both backbones together. These bases also make DNA functional.
Steps of Translation
Using the following word bank: anticodons, codons, mRNA, RNA; fill in the steps of translation.
The ribosome binds to a strand of _____
This nucleic acid has
three-nucleotide codes called ______
The three-letter codes are complementary
to ________
on ________
molecules. Each of these
molecules brings with it an amino acid, which will become part of the growing polypeptide.
Answers
Answer:
The correct answer is - mRNA, codons, anticodons, RNA.
Explanation:
During the translation process of protein synthesis, the mRNA strand is attached with the ribosome in order to translate the three-letter nucleotide sequence that is called codons or triplet code into specific amino acids.
These three-letter codes are complementary to the anticodons on the RNA (tRNA) molecules. These nucleic acid molecules with ribosomes bring with them an amino acid to make a polypeptide chain.
The models below represent nuclear reactions. The atoms on the left of the equal sign are present before the reaction, and the atoms on the right of the equal sign are produced after the reaction. Model 1: Atom 1 + Atom 2 = Atom 3 + energy Model 2: Atom 4 = Atom 5 + Atom 6 + energy Which of these statements is most likely correct about the two models? (2 points) Group of answer choices Both models show reactions which produce energy in the sun. Both models show reactions which use up energy in the sun. Model 1 shows reactions in the nuclear power plants and Model 2 shows reactions in the sun. Model 1 shows reactions in the sun and Model 2 shows reactions in a nuclear power plant.
Answers
Answer:
Model 1 shows reactions in the sun and Model 2 shows reactions in the nuclear power plants.
Explanation:
There are two kind of nuclear ractions- fusion and fission reactions.
Both release a huge amount of energy in different ways. Fusion reactions are nuclear reactions in which two smaller lighter atoms combine into a larger heavier atom, with the respective release of energy.
That is what model 1 shows:
Model 1: Atom 1 + Atom 2 = Atom 3 + energyThat is the process that happens and is responsible for the huge amount of heat produced in and released by the Sun.
In the Sun two atoms of hydrogen fuse into a larger atom of helium.
That is represented by the nuclear reaction:
some other particles
Since fusion reactions need extremely high temperatures and pressure to start and keep going the technology to use them economically is still in development.Fission reactions involve the split of the atom into smaller (lighter) atoms, releasing a huge amount of energy.
That is depicted by the model 2:
Model 2: Atom 4 = Atom 5 + Atom 6 + energy
As you see one atom is being spited in two atoms with the release with release of energy.
An example is the fission of uranium-235
Cladograms represent hypotheses about evolutionary relationships, what are these relationships based on?
Answers
Answer:
A cladogram is an evolutionary tree that diagrams the ancestral relationships among organisms. In the past, cladograms were drawn based on similarities in phenotypes or physical traits among organisms. Today, similarities in DNA sequences among organisms can also be used to draw cladograms.
the inheritance pattern of one gene over generations will not affect the inheritance pattern of another gene
Answers
A) Independent assortment claims that the inheritance patterns of different genes are unaffected by one another.
What is a gene and an example of one?The fundamental structural and operational component of heredity is a gene. DNA is the component of genes. Some genes serve as blueprints for the protein synthesis. Many genes do not, however, code for proteins. A few thousand Dna to more then 3.5 million letters make up a gene in a person.
What makes it a gene?However, it wasn't until Wilhelm Johannsen proposed calling the Mendelian components of heredity genes that the name began to catch on. The suggested term was derived from the Greek word "genos," which means "birth." The term gave rise to others like genome.
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The complete question is-
The inheritance pattern of one gene will not affect the inheritance pattern of another gene. This is known as (1 point)
1). independent assortment.
2). genetic variation.
3). crossing over.
4). random distribution.
Transcription produces a ________ molecule from a ________ template.
Select one:
a. RNA; DNA
b. polypeptide; RNA
c. DNA; DNA
d. DNA; RNA
Answers
Answer:
A
Explanation:
Problem B: Diabetes is a disease affecting the insulin producing glands of the pancreas. If there is not enough insulin being produced by these cells, the amount of glucose in the blood will remain high.
Answers
Diabetes is a disease that occurs when the pancreas doesn't produce enough insulin, resulting in high blood glucose levels.
Diabetes is a medical condition that impacts the insulin-producing glands of the pancreas. The pancreas plays a crucial role in regulating blood glucose levels by producing insulin. Insulin allows glucose to enter cells, providing them with energy. In diabetes, insufficient insulin production leads to elevated levels of glucose in the bloodstream, a condition known as hyperglycemia.Without enough insulin, glucose cannot be effectively transported into cells, resulting in its accumulation in the bloodstream. This leads to persistent high blood glucose levels, which can have various detrimental effects on the body over time. Complications of uncontrolled diabetes may include damage to blood vessels, nerves, and organs.Managing diabetes typically involves interventions like insulin therapy, medication, dietary adjustments, and lifestyle modifications to regulate blood glucose levels and minimize associated complications. Regular monitoring and appropriate management are crucial to maintaining optimal blood glucose control and overall well-being for individuals with diabetes.For more such questions on Diabetes:
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Write your research using your outline and the research you’ve collected. Be sure to proofread and revise your writing to catch any errors in grammar, spelling, logic, or cohesion. Remember that you must add a works cited page at the end of your paper to give credit to your sources. When you have completed your paper, submit it to your teacher along with this activity.
Answers
In today’s world, technology has become an integral part of our lives. It has changed the way we think, the way we work, and the way we learn. Technology has had a profound impact on education.
What is education?Education is the process of facilitating learning, or the acquisition of knowledge, skills, values, beliefs, and habits. Educational methods include storytelling, discussion, teaching, training, and directed research. Education is commonly divided into stages such as preschool, kindergarten, primary school, secondary school, and higher education. It is a key driver of economic and social development, with a strong influence on socio-economic outcomes such as income, health, employment rates, and gender equality.
The Benefits and Drawbacks of Technology in the Classroom
The use of technology in the classroom offers many potential benefits for students. Technology can help to engage students and make learning more interactive. For example, technology can provide students with access to real-world examples that can bring abstract concepts to life.
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Please help. How does the image demonstrate the Law of Conservation of Energy? Use the terms transfer, transformation, potential, and kinetic in your response.
Answers
Answer:
HOPE THIS HELPS!!!!
The cannon demonstrates the Law of Conservation of Energy because its energy is not lost or created, but in the process of transformation. the cannon ball begins at point a with high amounts of kinetic and potential energy because of the pressure, force, and heat that is used to blast it. In between point b and c, the red arrow shows the transfer of heat. This is also energy transferring from the cannon ball into the atmosphere. Same goes for points d and e. This way, no energy is created or destroyed, but kinetic and potential energy are lost from the ball while it slows down, and heat energy is transferred into the air during the movement.
Explanation:
energy is simply transforming into other places or forms in the picture, rather than being destroyed or created. Therefore, the picture represents the Law of Conservation of Energy.
What will happen if Richard’s friend jumps in front of him and scares him?
Answers
Advantages of seed development
Answers
Answer:
The advantages of seed development include increased crop yields, improved disease resistance, and enhanced nutritional content.
Seed development in plants provides several advantages, including protection and dispersal of offspring, dormancy for survival in unfavorable conditions, and a nutrient-rich food source for germination and early growth.
Seed development in plants offers various advantages that contribute to their reproductive success and survival.
One key advantage is the protection and dispersal of offspring. Seeds are enclosed within a protective seed coat, which shields the embryo from external threats such as desiccation, mechanical damage, and predation. Additionally, seeds have adaptations for dispersal, allowing them to spread over a wider range and colonize new habitats.Another advantage is dormancy. Seeds can enter a state of dormancy, remaining inactive until conditions become favorable for germination and growth.This allows plants to survive through periods of unfavorable environmental conditions such as drought, extreme temperatures, or lack of sunlight. Dormancy also enables seeds to delay germination until suitable resources and conditions for growth are available.
Furthermore, seeds serve as a nutrient-rich food source for the developing embryo. They contain stored reserves of carbohydrates, proteins, and lipids that provide energy and nutrients for germination and early growth when the seedling is not yet photosynthetically active.In summary, seed development in plants provides advantages such as protection and dispersal of offspring, dormancy for survival during unfavorable conditions, and a nutrient supply for early growth and development. These traits contribute to the reproductive success and resilience of plants in diverse environments.
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what i. Growth of body tissues is the result of:
A. Mutualism B. Meiosis C. Metamorphosis D. Mitosis
s geography?
Answers
All parts of a nonvascular
plant must be near a
because it doesn't have
long roots.
A. water source
B. heat source
C. food source
D. air source
Answers
Answer:
a.water source
Explanation:
If one in 100 (hypothetical scenario, not reality) people in the United States have cystic fibrosis, calculate the p and q frequency for the normal allele (p) and the mutated allele (q). Based on those calculations, what percentage of individuals would be expected to be homozygous dominant?
Answers
The frequency of the Normal allele is 0.99, the frequency of the Mutated allele is 0.01, and 1.98% of the Hispanic population is homozygous (carriers) in individual Dominant.
The frequency of an event or phenomena is the number of times it occurs within a certain period of time or location. Frequency in genetics often refers to the quantity of a specific allele or genotype in a population. As an illustration, the frequency of an allele in a population is its share of the total alleles present at the same locus in that population.
We may use the Hardy-Weinberg equation to determine the frequency of the dominant and recessive alleles:
We know that because cystic fibrosis is a homozygous recessive disease that Equals 1/100, or 0.01. By taking the square root of both sides, we can find q:
q = √(0.01) = 0.01
We can use the knowledge that p + q = 1 to find p:
p = 1 - q = 1 - 0.01 = 0.99
The frequency of the Normal allele is therefore 0.99, while the frequency of the Mutated allele is 0.01.
We can use the equation to get the proportion of homozygous people (carriers):
2pq × 100%
where 2pq is the percentage of people who are homozygous. When we plug in our values, we obtain:
2pq = 2(0.99)×(0.01) = 0.0198
Hence, the Hispanic population's homozygous people make up:
0.0198 × 100% = 1.98%
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A scientific theory that has been well-tested and is generally accepted as true is called a(n) _____.
You are performing an experiment using both a control and an experimental setup. The _____ setup contains the variable.
Answers
Answer:
1 is Law
2 is experimental
How is the strength of a volcanic eruption related to the magma in the volcano?
A.If the magma is more viscous, the eruption is stronger.
B.The strength of the eruption is determined by the depth of the magma below the volcano.
C.The more magma the volcano contains, the more slowly it will erupt.
D.They are not related.
Answers
If the magma is more viscous, the eruption is stronger. The correct answer is A.
The strength of a volcanic eruption is indeed related to the characteristics of the magma within the volcano. Viscosity, or the resistance to flow, plays a significant role in determining the explosiveness and intensity of volcanic eruptions. Magma with higher viscosity tends to trap gases and build up pressure, resulting in more explosive eruptions.
When magma is more viscous, it means that it is thicker and less fluid-like. This type of magma has a higher silica content, which makes it stickier and more resistant to flow. As a result, gas bubbles within the magma become trapped and are unable to escape easily. This trapped gas builds up pressure within the volcano until it eventually leads to an explosive release.
On the other hand, magma with lower viscosity is more fluid-like and allows gases to escape more readily. This type of magma tends to result in less explosive eruptions, as the gases can escape more easily and the magma flows more freely.
Therefore, the viscosity of the magma directly influences the strength and explosiveness of a volcanic eruption, with more viscous magma leading to stronger eruptions. The correct answer is option A.
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Which did Alisha place in the wrong column? - Density: 11.34 g/cm3 -Soft
-Solid at room temperature -Malleable
Answers
Answer:solid at room temperature
Explanation:
Monarch caterpillars rely on milkweed for food and shelter. Over a period of 10 years, the populations of these two species experienced the following changes in an ecosystem: Milkweed population: 75% decrease Monarch butterfly population: 85% decrease At the same time, the use of herbicides, which are chemicals used to decrease weed growth, increased by 175%. Which hypothesis about the relationship between the abiotic and biotic components of this environment is supported by this information? OA. The increase in herbicide usage caused a decrease in the milkweed population, which resulted in a decreased monarch butterfly population. B. The decreased milkweed population resulted in decreased herbicide usage, causing an increase in the monarch butterfly population. OC. The increase in herbicide usage caused a decrease in the monarch butterfly population, which resulted in a decreased milkweed population. D. The decreased milkweed population resulted in increased herbicide usage, causing a decline in the monarch butterfly population.
Answers
The hypothesis supported by the given information is (A) The increase in herbicide usage caused a decrease in the milkweed population, which resulted in a decreased monarch butterfly population.
The evidence provided states that over a period of 10 years, the milkweed population decreased by 75% and the monarch butterfly population decreased by 85%. At the same time, the usage of herbicides increased by 175%.
This information suggests a cause-and-effect relationship between the increase in herbicide usage and the decline in both the milkweed and monarch butterfly populations. Herbicides are chemicals used to decrease weed growth, and milkweed is considered a weed in agricultural settings. The increased herbicide usage likely led to a decrease in the milkweed population since it was specifically targeted for control.
As monarch caterpillars rely on milkweed as their primary food source and shelter, a decrease in the milkweed population would directly impact the monarch butterfly population. With fewer milkweed plants available, the monarch butterflies would have less food and suitable habitat, resulting in their population decline.
Therefore, the supported hypothesis is that the increase in herbicide usage caused a decrease in the milkweed population, which subsequently led to a decreased monarch butterfly population (option A).
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Most eubacteria are ____________________ because most rely on nutrition from other organisms.
Answers
Answer:
heterotrophic(Heterotrophic Eubacteria are among the most abundant and diverse bacteria on Earth,)
Explanation:
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Which is a biotic factor?
Answers
Answer:
a living organism that shapes its environment
Explanation:
hope this helps
The interior of the phospholipid bilayer is _______ meaning it repels polar molecules, such as water
Answers
The cell membrane's inside is hydrophobic, meaning that water won't cling to it. In order to effectively separate fluid inside the cell from fluid outside the cell, phospholipids form a two-layer cell membrane.
Why do polar molecules repelled by the phospholipid bilayer?Large hydrophilic polar or ionic molecules find it difficult to pass through the phospholipid bilayer. The cell membrane prevents the passage of any size charged atoms or molecules.
What component of the phospholipid bilayer is water-repellent?While the tails (the lipid component) are non-polar, the heads (the phospho part) are polar. The tails, which face the inside of the cell membrane, are "hydrophobic" (fearful of water), whereas the heads, which make up the exterior and inner linings, are "hydrophilic" (lovers of water).
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(iii) 2. (a) (i) IV: V: VI: VII: VIII: State two fi The diagram below is an illush. in mammals. Study it and answer questions 2(a) to 2(f). VI- V VII les involved in the circulation of blood Lok (ii) Identify the parts labelled I to VIII. I: II: III: VIII Pulmonary vein 11 111 IV Name two features that show that the structures are possessed by humans. ria [2 marks]
Answers
The two blood vessels involved in the circulation of blood shown in the diagram are the pulmonary vein (VI) and the pulmonary artery (VII). The pulmonary vein carries oxygenated blood from the lungs to the heart, while the pulmonary artery carries deoxygenated blood from the heart to the lungs.
The parts labelled in the diagram are as follows: I- Superior vena cava, II- Right atrium, III- Tricuspid valve, IV- Right ventricle, V- Pulmonary valve, VI- Pulmonary vein, VII- Pulmonary artery, VIII- Left atrium.
Two features that show that the structures are possessed by humans are the presence of four-chambered hearts and the existence of a closed circulatory system. The four-chambered heart in humans allows for efficient separation of oxygenated and deoxygenated blood, ensuring that oxygenated blood is supplied to the body's tissues. The closed circulatory system in humans ensures that blood is transported within blood vessels, preventing blood from coming into direct contact with other body tissues and organs. This system allows for the efficient transport of oxygen and nutrients to the body's tissues, while also removing waste products such as carbon dioxide. These features are critical for the survival of humans, as they ensure that oxygenated blood is supplied to all body tissues, promoting overall health and well-being.
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in which biome are minerals in the soil most rapidly depleted
Answers
Answer:
Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.
For this discussion post, I read the article “A creator of ‘CRISPR babies’ nears release from prison, where does embryo editing stand?
This article explained how biophysicist He Jiankui, who used the genome editor CRISPR to create the world's first genetically engineered babies, may be released from prison this week.
His November 2018 announcement about gene editing was well received. Still, Fyodor Urnov sees no circumstance that would justify efforts to modify babies genetically. Urnov supports using CRISPR to fix disease-causing mutations after birth. The work has proceeded with little notice, and oversight measures to stop rogue experiments like He's have stalled. A study showed how CRISPR could get rid of a newly fertilized egg of an extra copy of a chromosome. This problem can lead to Down syndrome and other medical conditions. The initial concerns about designer babies centered on CRISPR's sloppiness. But a study of CRISPR-altered human embryos found 16% had these "unintended editing outcomes" at the targeted DNA, and genetic screening of edited IVF embryos might not catch these errors. Stem cell researcher Dietrich Egli hopes to find a way to start and stop CRISPR at the embryo's single-cell stage. In a preprint posted on bioRxiv on 10 March, Egli's group demonstrated a strategy for trisomy, an errant third chromosome, by targeting an extra paternal or maternal chromosome copy with a CRISPR cut at or near its centromere.
If CRISPR does not correct the trisomy in all of the cells in an early embryo, a natural "rescue mechanism" might eliminate the abnormal cells. However, there are still multiple obstacles to overcome. Researchers are trying to use CRISPR to edit human embryos but need help beyond science. Editing the DNA of egg or sperm precursor cells may avoid some of these hurdles, improving the odds of getting it right. Orwig's team is exploring a different route to creating edited sperm stem cells by reprogramming adult human cells into a stem cell state and trying to coax them partly down the pathway that produces sperm. However, reprogrammed adult cells only survive when placed into newborn animals, which is unrealistic for humans. Scientists say the increased awareness of CRISPR's shortcomings has underscored the recklessness of transplanting edited embryos with today's technology. Still, some scientists are openly advocating for the practice.
find something interesting and 1-2 questions about the summary
Answers
One interesting aspect of the article is the discussion around using CRISPR to edit disease-causing mutations after birth, rather than in embryos.
What is the authenticity if genetically modifying babies ?Fyodor Urnov supports this approach and believes that there is no circumstance that would justify modifying babies genetically. This raises the question of whether there is a moral or ethical line that should not be crossed when it comes to genetic modification of humans, even if it is done to prevent or treat disease.
Another interesting point is the potential use of CRISPR to edit the DNA of egg or sperm precursor cells to avoid some of the hurdles of editing embryos. This raises the question of how this approach would be implemented and regulated, as it involves altering the genetic material of potential future offspring before they are even conceived.
Overall, the article highlights the ongoing debate and ethical considerations around the use of CRISPR for genetic modification in humans, as well as the need for continued research and oversight to ensure that any such use is safe and ethical.
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2. Explain the two theories on how they are thought to have evolved and provide a diagram as a visual aide. Include time frame and discussion of
endosymbiosis and membrane enfolding must be included. The drawing should reinforce your discussion on membrane enfolding and
endosymbiosis
Answers
Answer:
Explanation: I have no idea sorry
18
In the second stanza, what does the speaker call "Mines of gold"?
A.nectar from the flowers
B.colors of the flowers
C.height of the flowers
D.smell of the flowers
Answers
The correct answer is B.
In the second stanza, the speaker calls "Mines of gold" to the colors of the flowers.
The second stanza in the poem 'To the Cuckoo' by William Wordsworth talks about the beauty of flowers and the way they provide nourishment and food to the bees. "The "Mines of precious stones" refer to the beauty of the flowers and how they contain nectar, which is like gold to the bees as it provides nourishment to them. Therefore, the speaker calls "Mines of gold" to the colors of the flowers.For such more questions on flowers
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A pond contains many different types of organisms. The table below lists some of these organisms and their methods of reproduction.
Organism Method of Reproduction
Pantala flavescens sperm and egg fusion
Spirodela polyrhiza budding
Naegleria fowleri binary fission
Hydra oligactis budding
Over time, the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. Which of the organisms would most likely survive the change to their environment?
A.
Naegleria fowleri, because these organisms would have a high level of genetic variation due to asexual reproduction
B.
Hydra oligactis, because these organisms would have a low level of genetic variation due to sexual reproduction
C.
Pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction
D.
Spirodela polyrhiza, because these organisms would have a low level of genetic variation due to asexual reproduction
Answers
Answer:
C.
Explanation:
"Pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction"
Because they reproduce sexually they will vary genetically, and asexual reproduction is less likely to do this-- on top of this asexual reproduction is more likely to have negative effects than the latter.
Quote about asexual vs sexual reproduction:
"A disadvantage is that sexual reproduction takes longer than asexual reproduction. A mate must be found, the egg must be fertilized by sperm, and then the offspring develop. The benefit of introducing genetic variation into the species, however, outweighs this disadvantage."
Or to put it simply the more genetic variation the higher advantage to survive.
C- Pantala flavescens is your answer.
Explain why it would not be possible to accurately measure hemoglobin concentration if the RBCs were not first lysed.
Answers
Because hemoglobin is compartmentalized inside the RBCs, lysis of RBCs is necessary for accurate measurement of hemoglobin levels.
Measure of hemoglobin concentrationHemoglobin is a complex found in blood which is responsible for transporting oxygen to cells of the body.
Hemoglobin is composed of heme and the proteins alpha and beta globin.
Hemoglobin is found within the cytoplasm of red blood cells.
Since hemoglobin is compartmentalized inside the RBCs, lysis of RBCs is necessary for accurate measurement of hemoglobin levels.
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The scientific name for the domestic cat is Felis catis. What part of this name is the Genus name? O Felis O catus O Canis O familiaris
Answers
What phase does homologous chromosomes are separated
Answers
Answer:
Anaphase 1
Explanation: