A new shampoo claims to significantly increase hair growth. To test this, researchers conduct an experiment in which subject A uses the shampoo once a day for 30 days but subject B does not. After 30 days, subject A has had significant hair growth compared to subject B. Should the results of this experiment be used to support the product claims?
a. No. The experiment does not include enough subjects in each group.
b. Yes. The experimental design is sound.
c. No. The experiment does not include a control group.
d. Yes. The results support that the shampoo does what it claims.
e. No. The results do not support that the product does what it claims.
Answers
The results do not support that the product does what it claims. Experimental data is the data obtained in an experiment or scientific research.
The correct answer is E.
In other words, data collected during experimentation and analysis is known as experimental data.The outcome of an experiment might be affected by many factors, including: sample size, the variation between participants, the degree of precision of the measurement tools, and whether or not a control group is included.To gain accurate data, the data collection procedure must be performed very meticulously, from the initial question to the final conclusion.
An experiment was conducted to see if a new shampoo product could increase hair growth. Subject A, who used the shampoo once a day for 30 days, had significant hair growth compared to Subject B, who did not use the shampoo. No, the results of this research do not support the product's claim.
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Related Questions
Study the illustration.
Which term best describes the circular, enclosing structure
formed by the cell membrane in squares 3 and 4?
O sac
O vesicle
O lysosome
O enzyme
Answers
The best term that describes the circular, enclosing structures formed by the cell membrane in squares 3 and 4 is vesicles; option B
What are vesicles in a cell?Vesicles are small membrane-bound sacs that are used by the cells to transport materials within or outside the cell.
These vesicles transport materials such as proteins and fluids surrounded by lipid bilayers to or out of the cell.
Within the cell, vesicles are produced by the Golgi apparatus to transport materials within or outside the cell.
The cell membrane also forms vesicles that enclose substances to be taken into the cell.
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A bright orange color begins to appear in a population of butterflies. How could evolutionary fitness help explain this change?
Answers
Answer: Orange flowers in the environment, camouflage.
Explanation:
If the butterflies were brown before they were easily spotted when sitting upon orange petalled flowers. The orange butterflies in the population survive because they blend in with the flowers they eat from their environment.
6. 13 There is considerable interest in culturing endothelial cells onto polymeric surfaces to provide a small-diameter vascular graft that resists clotting. The adhesion of endothelial cells is greatly enhanced if the cells are grown on surfaces that contain fibronectin, a preadsorbed protein. One approach to adsorbing fibronectin onto the surface is to incubate the graft for a short period of time with the patient's plasma, which contains fibronectin. The other choice is to incubate the graft with a purified solution of fibronectin. In all cases, a the volume of fluid is sufficiently large that the change in concentration of any single protein is very small. Fibronectin adsorption is rapid and can be assumed to be diffusion limited. (a) When plasma is incubated with the graft surface, how long does it take to cover the surface with (1) albumin and (2) fibronectin? Treat plasma as consisting of albumin (ALB) at 50 mg mL-1 and fibronectin (FN) at 0. 200 mg mL-1. Take DEN = 1. 5 x 10-7 cm? s-1 DALB = 6. 0 x 10-7 cm’s-1 = Albumin concentration required to completely cover the surface = 0. 388 ug cm. Fibronectin concentration required to completely cover the surface 0. 364 ug cm-. (b) If plasma is incubated with the graft for 20 sec- onds, which proteins adsorb to the graft? Assume that adsorption is irreversible. (c) What is the potential advantage of incubating the graft surface with a purified solution of fibronectin at 200 ug mL-', instead of with plasma? 6. 14 Example 6. 8 examined
Answers
a) It takes 2.29 seconds for albumin and 7.35 seconds for fibronectin to adsorb onto the surface when plasma is incubated with the graft.
b) If plasma is incubated with the graft for 20 seconds, albumin and fibronectin get adsorbed to the graft
c) The advantage of using a purified solution of fibronectin instead of plasma is that it allows for precise control over the concentration and purity of the protein.
a) The time required for the adsorption of albumin and fibronectin onto the graft surface can be determined using the diffusion-limited adsorption model. The concentration of albumin required to completely cover the surface is 0.388 µg/cm², and the concentration of fibronectin required is 0.364 µg/cm².
The diffusivity of albumin (DALB) = 6.0 x 10⁻⁷ cm²/s
The diffusivity of fibronectin (DFN) = 1.5 x 10⁻⁷ cm²/s.
Using Fick's second law of diffusion, the time required for the surface to be covered with albumin and fibronectin can be calculated as:
\(t_{(ALB)}\) = [(0.388 x 10⁻⁶)²] ÷ [4 x DALB] = 2.29 s
\(t_{(FN)}\) = [(0.364 x 10⁻⁶)²] ÷ [4 x DFN] = 7.35 s
b) If plasma is incubated with the graft for 20 seconds, both albumin and fibronectin will adsorb onto the surface. However, the concentration of albumin is much higher (50 mg/mL) than that of fibronectin (0.2 mg/mL), so it is likely that albumin will dominate the adsorption process.
c) This can ensure consistent and reproducible graft surfaces, which is important for clinical applications. In addition, using a purified solution of fibronectin can reduce the risk of introducing other proteins or contaminants that may interfere with the graft's performance.
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The complete question is:
There is considerable interest in culturing endothelial cells onto polymeric surfaces to provide a small-diameter vascular graft that resists clotting. The adhesion of endothelial cells is greatly enhanced if the cells are grown on surfaces that contain fibronectin, a preadsorbed protein. One approach to adsorbing fibronectin onto the surface is to incubate the graft for a short period of time with the patient's plasma, which contains fibronectin. The other choice is to incubate the graft with a purified solution of fibronectin. In all cases, a volume of fluid is sufficiently large that the change in concentration of any single protein is very small. Fibronectin adsorption is rapid and can be assumed to be diffusion limited.
(a) When plasma is incubated with the graft surface, how long does it take to cover the surface with (1) albumin and (2) fibronectin? Treat plasma as consisting of albumin (ALB) at 50 mg mL-1 and fibronectin (FN) at 0. 200 mg mL-1. Take DEN = 1. 5 x 10⁻⁷ cm? s-1 DALB = 6. 0 x 10⁻⁷ cm’s-1 = Albumin concentration required to completely cover the surface = 0. 388 ug cm. Fibronectin concentration required to completely cover the surface 0. 364 ug cm-.
(b) If plasma is incubated with the graft for 20 seconds, which proteins adsorb to the graft? Assume that adsorption is irreversible.
(c) What is the potential advantage of incubating the graft surface with a purified solution of fibronectin at 200 ug mL-', instead of with plasma?
What effect does soil disturbance have on the soil itself?
Answers
Releases nutrients by breakdown of organisms, making resources available to the and altering both of the absolute and relatives rates of Ecosystems processes.
What is ecosystem?An ecosystem is a geographic area where plants, animals, and other and it is the organisms, as the well as weathering and landscapes, work together form a bubble of in life.
Physical disturbances of them day up the to ecosystems releases nutrients by breakdown of organisms, making it off is resources available and altering both the absolute and relatives and friends rates of Ecosystems me processes (e.g. primary productivity, secondary consumption, decomposition, nitrogen fixation), and qualitatively altering the main pathways involved .
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plants and animals that occupy the uppermost parts of the ocean are classified __________.
Answers
Answer:
pelagic
Explanation:
it is tha region that is not associated with the bottom or the shore
Plants and animals that occupy the uppermost parts of the ocean are classified as "epipelagic" or "epipelagic zone" organisms.
The uppermost parts of the ocean, also known as the epipelagic zone or sunlight zone, refer to the top layer of the water column that receives abundant sunlight. This zone extends from the surface of the water down to a depth of about 200 meters (660 feet). It is characterized by well-lit conditions, relatively warm temperatures, and high levels of dissolved oxygen.
Plants and animals that inhabit the epipelagic zone have adapted to the unique conditions found in this part of the ocean. Phytoplankton, such as diatoms and dinoflagellates, are primary producers that harness sunlight through photosynthesis to produce energy-rich organic compounds. These microscopic plants form the base of the marine food chain.
Various animals, including zooplankton, fish, turtles, marine mammals, and seabirds, inhabit the epipelagic zone. Some species, such as flying fish and dolphins, have adaptations that allow them to swim or glide near the surface. Many pelagic fish species, like tuna and marlin, are known to inhabit this zone as well.
The epipelagic zone plays a crucial role in supporting marine ecosystems and sustaining life in the ocean. It is a vital area for commercial fishing and supports a diverse array of marine biodiversity. Understanding the dynamics and organisms of the epipelagic zone is essential for studying marine ecology and conservation efforts.
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Which digestive organ has both Endo Crine and exocrine
functions
Answers
Answer:
The pancreas is an abdominal organ possessing both endocrine and exocrine functions.
Sort each description by the type of RNA it describes.
a) contains an anticodon
b) specifies the amino acid squence for a protein
c) contains exons
d)has amino acids covalently attached
e) is a component of ribosomes
f) is the most abundant form of RNA
which description fits tRNA, mRNA, rRNA?
Answers
tRNA contains an anticodon, mRNA specifies the amino acid sequence for a protein, and rRNA is a component of ribosomes.
tRNA (transfer RNA) carries amino acids to the ribosome during protein synthesis and contains an anticodon that recognizes and binds to a specific codon on the mRNA.
mRNA (messenger RNA) carries genetic information from the DNA in the nucleus to the ribosome and specifies the amino acid sequence for a protein through a series of codons.
rRNA (ribosomal RNA) is a component of ribosomes and helps to facilitate protein synthesis by providing a site for mRNA and tRNA to interact.
None of the descriptions fit snRNA (small nuclear RNA), which is involved in splicing pre-mRNA. The description of having amino acids covalently attached fits neither tRNA, mRNA, rRNA nor snRNA, as they do not have amino acids attached to them.
Lastly, the description of being the most abundant form of RNA fits rRNA, which makes up the majority of RNA in a cell.
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The sea lashed out in anger at the ships, unwilling to tolerate another battle. A. hyperbole. B. Alliteration. C. Personification. D. Repetition.
Answers
The phrase "The sea lashed out in anger at the ships, unwilling to tolerate another battle" is an example of C. Personification. This is because the sea is given human emotions (anger) and actions (lashing out, unwilling to tolerate), which are qualities not typically associated with a body of water.
Personification is a figure of speech in which human characteristics or qualities are attributed to non-human entities such as animals, objects, or natural phenomena. It is a literary device used to add depth and meaning to descriptions and make them more engaging and relatable. Examples of personification include "the wind howled in the night," "the flowers danced in the breeze," and "the sun smiled down on us."
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How do drugs and alcohol affect the function of the smooth endoplasmic reticulum?
Answers
Answer:Potential mechanisms that trigger the alcoholic ER stress response are directly or indirectly ... Alcohol is the most socially accepted addictive drug. ... Free radical release as a consequence of CYP2E1 function in the ER and subsequent ... Acetaldehyde adducts also affect ER Ca2+ handling in rat ventricular myocytes [65, ...
Explanation:
what is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (pct)? what is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (pct)? they increase the amount of surface area that comes in contact with the blood's plasma to help actively excrete toxins. their movements propel the filtrate through the tubules. they hold on to enzymes that cleanse the filtrate before reabsorption. they increase the surface area and allow for a greater volume of filtrate components to be reabsorbed.
Answers
The best explanation for the microvilli on the apical surface of the proximal convoluted tubule (PCT) is that they increase the surface area and allow for a greater volume of filtrate components to be reabsorbed.
The PCT is a part of the nephron in the kidney that is responsible for reabsorbing most of the filtered fluid and solutes from the glomerular filtrate. The microvilli on the apical surface of the PCT increase the surface area available for reabsorption, which allows for a greater volume of filtrate components to be reabsorbed.
Microvilli are tiny projections on the surface of a cell that increase its surface area. In the PCT, the microvilli create a brush border, which greatly increases the surface area of the PCT. This increased surface area allows for more efficient reabsorption of water, ions, and nutrients from the filtrate.
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we want to conduct an experiment to test the adaptive function of a polar bear's fur. we want to compare the fitness of bears with their natural coat, and bears with coats that evolved in a different environment. to do this comparison, we capture a number of polar bears so that we can manipulate their coats. for our treatment group, we shave the polar bears and glue on a coat of grizzly bear fur. an appropriate control for this treatment would be to:
Answers
We want to conduct an experiment to test the adaptive function of a polar bear's fur. we want to compare the fitness of bears with their natural coat, and bears with coats that evolved in a different environment. it changes genotype frequencies, not allele frequencies.
Adaptive behaviors encompass actual-life talents together with grooming, getting dressed, averting chance, securing meals coping with, following faculty policies, coping with money, cleaning, and making pals. Adaptive behavior also consists of the capacity to paint, exercise social abilities, and take personal duty.
Adaptive functioning refers to dealing with ordinary environmental needs and includes everyday living abilities that people perform to take care of themselves and interact with others.
Adaptive functioning encompasses those behaviors essential to residing independently, such as everyday dwelling competencies (e.g., dressing and grooming oneself), social talents, and communication competencies. youngsters with Autism Spectrum issues (ASD) display adaptive behavior impairments across all domain names.
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What is carbon presented as in the atmosphere?
Answers
Answer: Carbon dioxide
Explanation:
A forest canopy has an interception capacity of 5 mm (0.2 in). Estimate the annual fraction of rainfall lost to interception storage based on the daily precipitation data (inches) given below. Assume that all intercepted water evaporates during each 24-hr period. Use an "if' statement in Excel to solve.
Answers
Understanding the interception capacity of the forest canopy is important for managing water resources and protecting natural ecosystems. By estimating the amount of water lost to interception storage, we can better manage our water supply and ensure that we are using it in a sustainable way.
To estimate the annual fraction of rainfall lost to interception storage by the forest canopy, we first need to calculate the daily interception loss. The interception capacity of the forest canopy is given as 5 mm or 0.2 inches. This means that any rainfall above this limit will be lost to interception storage.
Assuming that all intercepted water evaporates during each 24-hr period, we can use the daily precipitation data given below to calculate the interception loss.
To solve this problem in Excel, we can use an "if" statement to check if the daily precipitation is greater than the interception capacity. If it is, then the daily interception loss will be equal to the difference between the daily precipitation and the interception capacity. If it is not, then the daily interception loss will be zero.
Using this approach, we can calculate the daily interception loss for each day in the dataset and then sum it up to get the annual fraction of rainfall lost to interception storage. This will give us an idea of how much water is being lost to the forest canopy and how much is reaching the ground.
Overall, understanding the interception capacity of the forest canopy is important for managing water resources and protecting natural ecosystems. By estimating the amount of water lost to interception storage, we can better manage our water supply and ensure that we are using it in a sustainable way.
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Explain how stem cells differ from other kinds of cells. Give an example using plantsor animals.
Answers
Stem cells are a special kind of cells due to their ability to duplicate and differentiate in different kinds of cells.
there are different kinds of stem cells. The main diference betwen them is the kind of cells they can differentiate into.
for example, when an embrioyo is develoment, the firs cell that is form after the coito is a totipotent stem cell, because it has the ability to diferenciate in every kind of cell in the body. Afer a few weeks, in bovines it would be aroun 8 days, the cells become pluripotent, because they can generate every cell in the body, but the placent. and when we become adults this cells are know as mesechymal (multipotent), that are cells that can diferenciate in certain kind of tissue
How do transporters and channels select which solutes they help move across the membrane?.
Answers
Answer:
Channels discriminate between solutes mainly on the basis of size and electric charge.
Explanation:
answer these following questions:
Answers
The answers to the questions about measurements are given as follows:
1. Milliliter
2. Paris
3. Kilogram
4. Density
5. Metric
What is the metric system?The metric system is an international convention that is used in the measurement of weight and other physical quantities. This standard is accepted by scientists all over the world except for three countries which are the United States, Myanmar, and Liberia.
This measurement system allows for recalculation and the repetition of experiments across the world where it is applicable.
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Two trees growing close to each other both use light, water,
and the same nutrients in the soil. This relationship is best
defined as:
a. symbiosis
b. competition
c. interdependence
d. none of the above
Answers
Answer:
Competition
Explanation:
Took the quiz
If two trees are growing close to each other with both using light, water, and the same nutrients in the soil, the relationship is best defined as competition. the correct option would be B.
In other words, biological competition describes a form of relationship between two organisms in which both fight for the same resources that are available in limited supply.
in competition, both organisms either learn to coexist through resource partitioning or fight it to finish. Without resource partitioning, one of the organisms will have to die as a result of being outcompeted.
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meiosis enables two parents to produce trillion different genetically diverse offspring.
T/F
Answers
False. Meiosis enables genetic diversity, but it does not guarantee the production of trillions of different offspring.
Meiosis is a specialized cell division process that occurs in sexually reproducing organisms, and it involves two rounds of division resulting in the formation of four haploid cells (gametes) from a diploid cell. During meiosis, genetic diversity is generated through several mechanisms, including crossing over, independent assortment of chromosomes, and random fertilization. These processes shuffle and recombine genetic material, leading to the creation of genetically unique gametes. Meiosis enables the production of genetically diverse offspring, but it does not directly determine the number of possible offspring. The actual number of genetically diverse offspring depends on various factors, including the number of possible genetic combinations from the parents' chromosomes and the mechanisms of genetic recombination during meiosis. However, it is important to note that the number of possible genetic combinations is extraordinarily large, allowing for a significant level of genetic diversity among offspring.
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Which of the following best describes diversity?
it refers to the differences between people
it refers to a workplace that has individuals from similar
cultural backgrounds
it refers
Answers
Answer:
Explanation:
DONT KNOW SORRY
please help asap i will mark brainliest
Answers
Answer:
the last one
it has one side that is positively charged and one side that is negatively charged
Answer:
D
Explanation:
A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is negatively charged. The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are called covalent bonds, because the atoms share electrons.
How long does the light from the sun reached here in Earth
Answers
which of the following statements about types of epithelial cells is false? simple columnar epithelial cells line the tissue of the lung. simple cuboidal epithelial cells are involved in the filtering of blood in the kidney. pseudostratisfied columnar epithilia occur in a single layer, but the arrangement of nuclei makes it appear that more than one layer is present. transitional epithelia change in thickness depending on how full the bladder is.
Answers
The false statement about epithelial cells is: (1) simple columnar epithelial cells line the tissue of the lungs.
Epithelial cells are the most prevalent form of cell present in the living body, They cover up most of the surface of the body like outer surface, body cavities, hollow organs, etc. The function of these cells are very diverse like protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
Simple columnar epithelial cells are the cell type that form a single layer in epithelium. They are tall and slender in appearance with a small oval shaped nuclei. They are attached to a basement membrane and the nuclei is positioned on the basal side. These cells are present in organs like stomach, buccal cavity, etc.
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Why are we able to take a gene from an organism such as jellyfish and place it in another organism such as bacteria and have the bacteria make the jellyfish protein?
Answers
Which statement describes landforms
Answers
please explain how a punit square works, I have a major test on it and im confused
Answers
Answer:
Explanation: https://youtu.be/agQpPPQ5IVQ
heres a video explaining
Answer:
The image is attached but it might be hard to understand because it's hard to explain
One letter from each parent are combined to create a genotype of one possible offspring. Example: G (from one parent) + g (from the other parent) = Gg (genotype of offspring)
Capital letters are dominant and lowercase letters are recessive
Dominant traits mask recessive ones so when the genotype of the offspring is Gg, it will be green because green is dominant over yellow
If you need any help with the questions on the test you can post them and i'll help
Which pregnancy results from the fertilization of a single egg cell by a single sperm that divides to form two embryos
Answers
Answer:
Twins conceived from one egg and one sperm are called identical or 'monozygotic' (one-cell) twins. The biological mechanisms that prompt the single fertilized egg to split into two remain a mystery.
Explanation:
Hope I could help
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[100 PTS] Name one controversy that has resulted from the Human Genome Project. Using college level writing, make a logical argument for one side of the controversy, then make a logical argument for the other side.
Answers
Answer:
One controversy that has resulted from the Human Genome Project is the ethics of genetic engineering and whether it should be used to create so-called "designer babies." Proponents of genetic engineering argue that it has the potential to eliminate genetic disorders and diseases, and that it could improve the overall health and well-being of future generations. For example, parents could use genetic engineering to ensure that their children have a lower risk of developing conditions like diabetes or heart disease.
On the other hand, opponents of genetic engineering argue that it could lead to a number of social and ethical problems. For instance, some people worry that genetic engineering could be used to create a society of genetically superior individuals, leading to inequality and discrimination. Additionally, opponents argue that we do not yet fully understand the potential risks and long-term effects of genetic engineering, and that we should therefore proceed with caution. They also raise concerns about the potential misuse of genetic engineering, such as using it to create individuals with enhanced physical or intellectual abilities for military or other nefarious purposes.
In conclusion, while genetic engineering has the potential to bring many benefits, there are also valid concerns about its potential consequences. It is important for society to carefully consider these issues and to proceed with caution.
Explanation:
What is the measurement of the velocity of moving particles the Doppler effect is based
on?
Answers
www.sciencedirect.com › topics › d...
Doppler
Would more aliens have antennae or not? Why?
Answers
I would say no because in si-fi movies and nobles they do but there is a little chance of them having it
I need help answering number 12
Answers
Glycolysis takes place in Cytoplasm were Reactant(inputs) is Glucose and product is pyruvate linear metabolic pathway of enzyme-catalyzed reactions helps to convert glucose into two molecules of pyruvate in the presence of oxygen . Glycolysis is the first step in the cellular respiration .
Krebs cycle takes place in Mitochondrial matrix were Reactant(inputs) is Acetyl coA and product is NADH, FADH2, oxaloacetate Krebs cycle converts the chemical energy of acetyl coenzyme A (acetyl CoA) into the reducing power of nicotinamide adenine dinucleotide (NADH). Krebs cycle takes third place in cellular respiration .
Oxidative phosphorylation takes place in Mitochondrial membrane or cristae were reactant(input ) is NADH and product is ATP. Oxidative phosphorylation is generation of most ATP molecules . This process takes second place in cellular respiration .
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