Answer:
Knowing the results of this lab is important for several reasons. First, it gives us a better understanding of the basic building blocks of a cell and how they work together to form the complex structures that make up our bodies. This knowledge can then be applied to better understand a variety of biological processes, such as disease and development. By examining the structure of onion skin cells under a microscope, we can gain insight into the structure of other cells in our body, such as those found in our skin, muscles, and organs. This knowledge can help us to better understand the structure and functioning of our bodies, which can lead to more effective treatments for diseases, as well as a better understanding of how our bodies work. Additionally, this knowledge can help to inform research into other areas, such as agriculture, where understanding the structure and functioning of cells is essential for successful crop production.
wich molecule is like the tank of the delivery truck and which is like the gas tank of the car?
The ATP molecule is like the tank of the delivery truck, while the glucose molecule is like the gas tank of the car.
What are molecules?
A molecule is a collection of two or more chemically bound atoms, whether they are from the same element or another. One molecule of water is created, for instance, when two hydrogen atoms and one oxygen atom combine.
ATP is a biological molecule that stores chemical energy needed by all living cells for metabolic activities. ATP is synthesized during the process of cellular respiration. Glucose molecules are products of digestion in our system, and they hold energy in their bonds. In the process of cellular respiration, glucose molecules are broken down and used to synthesize ATP.
Therefore, ATP molecule is like the tank of the delivery truck, while the glucose molecule is like the gas tank of the car.
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Can someone help me with this phone pls it’s due asap
New technologies has allowed scientists to build cladograms based on similarities in DNA. Thus, option A is correct.
What is cladogram?A cladogram is a diagram of branches that show the cladistic relationship between animal species. A node you can expect to find on the cladogram would be Deuterostome development. Examples of deuterostomes are starfish and sea cucumbers.
Recombinant DNA technology can be defined as the process that involves manipulation of genetic material of an organism to get the desired trait or product.
Therefore, New technologies has allowed scientists to build cladograms based on similarities in DNA. Thus, option A is correct.
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Which process had to occur before the theory of evolution was devised?
AConduct a single experiment
B Interpret numerous observations
C Explain earlier theories.
D Obtain a patent for the theory
The process that had to occur before the theory of evolution was devised is B Interpret numerous observations.
What is the process for the development of a scientific theory?The process for the development of a scientific theory involves making numerous observations that can be used as support and test experiment associated with the assumptions presented in such a theory, which is fundamental to obtaining predictive outcomes.
Therefore, with this data, we can see that the process for the development of a scientific theory is based on observational procedures about a given scientific question,
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What is a solution's absorbance, if its molarity is 0.25M?
The molar absorbtivity constant at 560 nm for this substance is 0.3 M⁻¹cm⁻¹.
The absorbance of the solution is 0.45, the concentration would be 1.5 M.
What is the molar absorbtivity constant?The molar absorbtivity constant is a measure of the ability of a substance to absorb light at a specific wavelength. It is related to the absorbance of a solution by the Beer-Lambert law:
A = ε * b * c
where;
A is the absorbance,ε is the molar absorbtivity constant,b is the path length of the cuvette (in this case, 1 cm), andc is the concentration of the solution.Rearranging the equation to solve for ε:
ε = A / (b * c)
Substituting the values from the question, we have:
ε = 0.075 / (1 cm * 0.25 M)
ε = 0.3 M⁻¹cm⁻¹
(b) To find the concentration if the absorbance is 0.45, we can use the Beer-Lambert law:
A = ε * b * c
Rearranging the equation to solve for c:
c = A / (ε * b)
Plugging in the values from the question and using the value of ε found in (a), we have:
c = 0.45 / (0.3 * 1)
c = 1.5 M
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Complete questions:
A 0.25 M solution is in a tube of path length of 1 cm, has an absorbance = 0.075 at 560 nm.(20)
(a) What is the molar absorbtivity constant (b) What is the concentration if absorbance is 0.45
Earth's atmosphere blocks much of the light that astronomers need to observe distant stars. To get around this problem, nasa put a powerful telescope-.
The majority of the light light astronomers use to study far-off stars is blocked by the Earth's atmosphere. NASA installed a parabolic dish in orbit around the planet to circumvent this issue.
Do you take a breath of the air?arbitrary fact The atmosphere of the Earth is where we find the oxygen we breathe. Did you know that the atmosphere that makes up the coating of air we breathe could be as thin as the apple's skin if the planet were an apple?
The composition of the atmosphereAbout 78% of the gases in the Earth's atmosphere are nitrogen, 21% are oxygen, 0.9 % are argon, and 0.1 % are other gases. The other 0.1 percent of gases includes trace quantities of neon, water vapor, methane, carbon dioxide, and methane.
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Sickle cell anemia is a codominant disorder , where AA stands for normal red blood cells and SS stands for sickle- shaped red blood cells . Heterozygous individuals have a phenotype showing both sickle - celled and normal - shaped red blood cells . Cross two people who are both heterozygous for this trait . Show genotypic and phenotypic percentages of the generation
Answer: The genotypic percentages for the offspring of two heterozygous individuals for the sickle cell anemia trait would be 25% AA (normal red blood cells), 50% AS (mixed phenotype), and 25% SS (sickle-shaped red blood cells). The phenotypic percentages for the offspring would be 75% mixed phenotype (AS) and 25% sickle-shaped red blood cells (SS).
Explanation:
Sickle cell anemia is a codominant disorder, which means that both alleles of a heterozygous individual are expressed equally. In this case, the heterozygous phenotype shows a mixture of normal red blood cells (AA) and sickle-shaped red blood cells (SS).
When two heterozygous individuals (AS) are crossed, the possible offspring genotypes are:
AA (normal red blood cells) = 1/4 of the offspring
AS (mixed phenotype) = 1/2 of the offspring
SS (sickle-shaped red blood cells) = 1/4 of the offspring
So, the genotypic percentages for the offspring would be 25% AA (normal red blood cells), 50% AS (mixed phenotype), and 25% SS (sickle-shaped red blood cells).
The phenotypic percentages for the offspring would be 75% mixed phenotype (AS) and 25% sickle-shaped red blood cells (SS), as both alleles are expressed equally in the AS phenotype.
It's important to note that sickle cell anemia is a serious disorder that can cause a wide range of health problems, including anemia, pain, and increased risk of infections. Individuals with sickle cell anemia typically require medical treatment and support to manage their condition.
PLEASE HELP THIS IS DUE TODAY
THIIS IS WORTH A LOT OF POINTS
Geologists can use ________ waves to learn about Earth’s interior. P waves travel faster than S waves. S waves travel through solids only, which tells geologists that the ______ core is liquid.
Geologists call the outer, solid area of Earth the crust; the next layer is the _____ . Finally, at the very center, is the core.
Geologists can use seismic waves to learn about Earth’s interior. P waves travel faster than S waves. S waves travel through solids only, which tells geologists that the outer core is liquid.
Geologists call the outer, solid area of Earth the crust; the next layer is the mantle. Finally, at the very center, is the core.
I apologize if I was wrong. I hope you have a lovely day! :)
Answer: seismic, outer, mantle
Explanation: got it right
The tail points to where the wind is
coming from. If the tail points north, a north wind is moving from north to south.
What direction is the wind coming from on the symbol above?
The direction of the wind is coming from the Southwest.
How can wind direction be found?Wind direction can be measured using a variety of instruments, including the windsock and wind vane. Both of these instruments operate by moving in order to reduce air resistance. The direction from which the wind is blowing is indicated by the way a weather vane is pointed by prevailing winds.
The wind direction is represented by the shaft of an arrow extending from the station circle in the direction of the wind. On the shaft of the wind direction arrow, the wind speed is plotted as feathers and half-feathers representing 10 and 5 knots, respectively.
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The complete question is:
Look at the “tail” that is sticking out from the circle. The tail points to where the wind is coming from. If the tail points north, a north wind is moving from north to south. What direction is the wind coming from on the symbol above? ________________________
Which description lists Earth's layers from smallest to largest width (thickness)?
Lithosphere, asthenosphere, lower mantle, core
Lithosphere, lower mantle, asthenosphere, core
Asthenosphere, Lithosphere, lower mantle, core
Core, lower mantle, asthenosphere, lithosphere,
From smallest to biggest width, the layers of the Earth are listed as core, lower mantle, asthenosphere, and lithosphere. (thickness).
Which description goes from smallest to biggest in listing the layers of the Earth?The strata of the Earth are divided into four groups, starting at the centre. The inner core, exterior core, mantle, and crust are those layers, in order from deepest to shallowest.
What is the name of the earth's thinnest layer?The crust is the earth's thinnest covering. The solid outer crust, the mantle, the outer core, and the inner core are the four major layers that make up the Earth. The Earth's crust, which makes up less than 1% of our planet's capacity, is the thinnest of these layers.
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Answer:
A: lithosphere, asthenosphere, lower mantle, core
A species of bird has migrated to an island where their population is growing rapidly due to a lack of predators. Identify three limiting factors to the population size, and describe the effect of each.
Answer:
A species of bird that has migrated to an island where their population is growing rapidly due to a lack of predators may experience the following limiting factors:
Food resources: One limiting factor could be the availability of food resources. If the bird population grows too quickly and consumes all of the available food, the population may be limited by a lack of food. This can result in reduced growth, starvation, and decreased survival rates.Disease: Another limiting factor could be the presence of disease. If a disease outbreak occurs, it could reduce the population size and limit its growth.Breeding habitat: The bird population may also be limited by the availability of suitable breeding habitat. If the island becomes overcrowded, the birds may not have access to enough space to build nests, mate, and rear their young. This could result in decreased breeding success, reduced population growth, and ultimately a decrease in population size.In conclusion, the growth of the bird population on the island may be limited by the availability of food resources, the presence of disease, and the availability of suitable breeding habitat. These factors can have a significant impact on the population size and its ability to sustain itself over time.
Question 4 of 10
How is a scientific theory developed?
O A. An experiment is repeated over and over with the same results.
B. A single experiment is carefully performed once.
C. One scientist supports his or her hypothesis with an experiment.
D. Many different experiments are repeated many times.
A scientific theory is developed by:
D. Many different experiments are repeated many times.What is scientific theoryA scientific theory is a well-substantiated and widely accepted explanation of some aspect of the natural world that is based on empirical evidence and has been repeatedly tested and confirmed through experimentation and observation.
Scientific theories are built upon a foundation of previous scientific knowledge and are subject to ongoing refinement and revision as new data becomes available. They are considered the most robust and comprehensive explanations of natural phenomena that currently exist and provide a framework for understanding how the natural world operates. Examples of well-established scientific theories include the theory of evolution, the theory of gravity, and the theory of relativity.
The development of a scientific theory is a long and rigorous process that involves multiple lines of evidence and repeated experimentation. It typically involves many scientists from different fields and backgrounds working together over a period of years or even decades to collect data and perform experiments that support or contradict a given hypothesis.
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Explain what controls evolution and how these controls affect organisms
Evolution is controlled by a combination of natural selection, genetic drift, gene flow, mutation, and other factors that can influence the frequency and distribution of alleles within a population.
How does evolution come about ?One of the primary mechanisms of evolution is natural selection, which occurs when certain traits provide a selective advantage to an organism in its environment.
Mutation, or changes in the DNA sequence of a gene, can also contribute to evolution by introducing new genetic variation into a population. The controls on evolution can have a significant impact on the traits and characteristics of organisms.
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13. Three resources that rabbits need to survive are: A. Food, oxygen and carbon dioxide. B. Food, water and a mate. C. Water, light and carbon dioxide. D. Oxygen, carbon dioxide and shelter.
Answer:
B
Explanation:
Food and water are basic needs of all animals so rabbits really do need them to survive. Particularly for energy as well as for osmoregulation and all those other reactions that go on inside their bodies. And for the mate, well, rabbits too must make sure their species survive.
NB: Rabbits don't need carbon dioxide to survive.
Estimate the probability of this disorder occurring in the offspring of a marriage between first cousins. Enter your answer as either a fraction or a decimal. Part B Compare this probability to the population at large. Inbreeding increases the probability of this disorder. Inbreeding decreases the probability of this disorder. Inbreeding does not change the probability of this disorder.
Part A -The likelihood of having Autosomal Recessive Disorder is 1 in 10,000 people = 0.0001.
Part B - Inbreeding increases the probability of disorder.
Autosomal Recessive Disorder inheritance is the way genetic traits or conditions are passed from parent to child. Genetic conditions can occur when a child inherits a mutated (altered) copy of the gene from each parent. Parents of children with an autosomal recessive disorder usually do not have the disorder. Consanguineous offspring may be at increased risk for recessive diseases due to the expression of autosomal recessive gene mutations inherited from a common ancestor.
The following Genotypes can be found in the first two cousins:
A stands for dominant allele.
a denotes a recessive allele.
1) AA X AA
Normal for all offspring.
There are no problems.
2) AA X Aa
Genotype of offspring = AA and Aa.
Because the phenotype is normal, the condition does not exist.
3) Aa X Aa
Genotype of offspring = AA, Aa, and aa.
The condition affects one-quarter of all offspring.
1/4 are typical,
Half of them are carriers.
4) aa X aa
All offspring are afflicted by the condition.
If we assume the cousins to be carriers[because their genotype is not indicated, we will consider them to be carriers], affected kids are generated.
Carriers' probability = 0.02
By 1/2, both cousins are carriers.
And the likelihood that the child may be impacted - 1/4 or 25%
Total Probability is equal to 1/2 * 0.02 * 1/2 * 0.02
= 0.0001
As a result, the pair might have afflicted offspring by 0.0001.
Possessing the normal alleles has no effect on 25% of people; carrying one impacted and one unaffected allele has no effect on 50% of people. Carrying the afflicted Alleles affects 25% of the population.
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17. Researchers can add several adenine nucleotides to the end of a strand of mRNA. What could be a practical application of this procedure?
18. A researcher develops a new form of polymerase chain reaction that can amplify long sequences of DNA. Is this technique likely to replace entirely the use of bacteria as cloning vectors? Why or why not?
19. You are studying DNA replication in bacterial cells. In one culture, you note that replication is not producing visible daughter cells. Your analysis shows that about 50% of the daughter cells appear normal, while 50% are volatile and do not form a double helix.
a) Draw and label a diagram that could account for your observation
b) If you centrifuged the DNA from this culture, what would you expect to see?
How does Amyotrophic lateral sclerosis affect homeostasis?
Answer:
Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, is a neurodegenerative disorder that affects the motor neurons responsible for controlling voluntary muscles. This leads to progressive muscle weakness and atrophy, which can ultimately lead to complete paralysis.
The impact of ALS on homeostasis is significant, as the loss of muscle control affects the body's ability to maintain proper balance, posture, and mobility, making it difficult for the person to carry out normal daily activities. Additionally, as the disease progresses, it can also affect breathing, swallowing, and speaking, which further disrupts the body's ability to maintain homeostasis.
Furthermore, ALS can also lead to a number of secondary complications such as malnutrition, bedsores, and respiratory infections, which further exacerbates the body's difficulty in maintaining homeostasis. In conclusion, ALS can have a significant impact on the body's ability to maintain homeostasis and can lead to a number of complications that further disrupt this balance.
Explanation:
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder that affects homeostasis by disrupting the balance between different systems in the body.
In ALS, the nerve cells responsible for controlling the muscles (motor neurons) gradually deteriorate and die, leading to muscle weakness, twitching, and eventually, paralysis. This affects the body's ability to maintain muscle tone and movement, which is essential for maintaining posture and balance.
The loss of motor neurons also affects the autonomic nervous system, which controls the body's unconscious functions such as heart rate, blood pressure, and digestion. This can lead to problems with homeostasis, such as difficulty swallowing, breathing difficulties, and changes in blood pressure and heart rate.
In addition, ALS can affect the body's ability to regulate temperature and respond to stress, as well as its ability to produce energy and remove waste, which are all crucial components of homeostasis.
Therefore, ALS has a significant impact on homeostasis by disrupting the balance between different systems in the body, leading to a wide range of physical and physiological symptoms.
The following table shows the duration of a year on some unknown planets of equal mass.
Duration of Year
Planet Duration of Year
Y 224 days
Z 320 days
Which of the following best explains which planet is closer to the sun?
Planet Y, because gravity is directly proportional to the square of distance
Planet Z, because gravity is directly proportional to the square of distance
Planet Z, because the sun exerts a greater gravitational force on it than on planet Y
Planet Y, because the sun exerts a greater gravitational force on it than on planet Z
Answer: Planet Y, because the sun exerts a greater gravitational force on it than on planet Z
Explanation:
What process is occurring at Location A?
Combustion
Photosynthesis
Respiration
Weathering
In location A, photosynthesis is taking place. Chlorophyll, which plants use to absorb solar energy and transform it into chemical energy through the process of photosynthesis, gives foliage their characteristic green colour.
Which cycle involves photosynthesis, respiration, combustion, and other processes?The carbon cycle shows how the element carbon naturally moves through the atmosphere in a variety of ways. The photosynthesis, respiration, exchange, sedimentation, extraction, and combustion are the six major steps in the carbon cycle. The majority of these work with CO2, which is a form of carbon [7].
What exactly does photosynthesis entail?Photosynthesis is the mechanism by which plants turn carbon dioxide, water, and sunlight into oxygen and sugar-based energy.
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The cells of a certain culture of bacteria triple every 2 minutes. If there are 40 cells in the beginning, in how many minutes will there be more than 9500 cells?.
A specific culture of bacteria has cells that triple every two minutes. If there are 40 cells in the start, there will be more than 9500 cells there in 9.20 minutes.
Since the number of cells triples every 2 minutes, we can write the relationship between the number of cells (N) and time (t) as:
N = 40 x [tex]3^{t/2}[/tex]
where t is the time in minutes.
We want to find out when the number of cells will be greater than 9500.
Dividing both sides by 40, we get:
[tex]3^{t/2}[/tex] > 237.5
Taking the logarithm (base 3) of both sides, we get:
t/2 > log_3(237.5)
Solving for t, we get:
t > 2 x log_3(237.5)
Using a calculator, we can evaluate log_3(237.5) to be approximately 4.60. Therefore,
t > 2 x 4.60 = 9.20 minutes
So it will take more than 9.20 minutes for the number of cells to exceed 9500.
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Which government agency is responsible
for enforcing RCRA?
A. USGS
B. EPA
C. NPS
D. NOAA
Answer:
The government agency responsible for enforcing RCRA (the Resource Conservation and Recovery Act) is the Environmental Protection Agency (EPA). The EPA is a federal agency that works to protect human health and the environment by regulating and enforcing various environmental laws and regulations, including RCRA. The EPA's mission is to ensure that all Americans have access to clean air, land, and water, and that they are protected from environmental hazards and risks.
Explanation:
Since no chemical is completely free of adverse effects, given the right dose and conditions, which of the following statements is most likely to be true O Natural products are safer than synthetic products | Natural products are usually safer than synthetic products Natural products are usually less safe than synthetic products None of the above
None of the above statements can be considered generally true, as the safety of a chemical depends on various factors including dose, exposure, and individual susceptibility.
The safety of a chemical depends on various factors including dose, exposure, and individual susceptibility.
Which is generally safer, natural or synthetic products?None of the above statements can be considered generally true, as the safety of a chemical depends on various factors including dose, exposure, and individual susceptibility.
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How is an organ system within the human body defined by the functions it performs?
Answer:
They are defined in the body because an organ system comprises of group of different organs that make up a system performing several biological functions and those functions fit in to the systems performance and functions. Organs consist of specialized tissue that work together to perform functions.
The haploid cells of a kangaroo contain 8 chromosomes. How many chromosomes are in a kangaroo's diploid cells?.
The number of chromosomes in a kangaroo's diploid cells is 16, as opposed to the haploid cells 8 chromosomes.
In a kangaroo's diploid cells, how many chromosomes are there?Chromosome number 20 in the red kangaroo is diploid (2n = 18+XY, 2n = 18 + XX). All chromosomes can be distinguished morphologically, with the exception of chromosomes 8 and 9, which can be distinguished by G-banding (Rofe 1979).
How many chromosomes do kangaroos have that are haploid?The important thing to remember is that these are haploid. We are aware everything is ok. We may show that 1 end would equal 8 points by dividing each side by 2 if 2 n equals 16. Therefore, this kangaroo has a haploid number of 8.
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what is the relationship between a continent and the earth’s plates
Answer:
tectonic plates
Explanation:
The relationship between a continent and the Earth's plates is that continents are part of the Earth's tectonic plates. The Earth's outer shell is divided into several large and many small plates, and the continents sit on these plates. The movement of these plates is responsible for many geological events such as earthquakes, volcanic eruptions, and the creation of mountains. The boundary between two plates is called a plate boundary, and there are three main types of plate boundaries: divergent boundaries, where plates move away from each other and magma rises from the mantle to create new crust; convergent boundaries, where plates collide and one plate is forced beneath the other, leading to the formation of mountains; and transform boundaries, where plates slide past each other and can cause earthquakes. The continents move with the plates, and over long periods of time, this movement has led to the formation and breakup of supercontinents, such as Pangaea.
Allen
Cross-pollination
of flowers from different populations of the same
species will most likely result in -
A gene flow as new alleles are introduced
B evolution of a different species as alleles mix
C hybrid sterility as gametes from different individuals
are incompatible
D a decrease of genetic variation among individuals
Cross-pollination of flowers from different populations of the same species will most likely result in gene flow as new alleles are introduced. Thus, the correct option for this question is A.
What is Cross pollination?Cross-pollination may be characterized as the process of deposition of pollen grains from a flower to the stigma of another flower. This process is accomplished through numerous insects, birds, ow winds.
This type of pollination significantly involves the transfer of pollen grains from the anther of a flower to the stigma of a flower that is genetically different.
Cross-pollination involves the formation of a different genotype, compared with self-pollination by the same genotype. It has a major impact on global food production because cross-pollination increases yield and enhanced quality attributes such as fruit mass, sweetness, acidity, and color intensity of many horticultural crops.
Therefore, cross-pollination of flowers from different populations of the same species will most likely result in gene flow as new alleles are introduced. Thus, the correct option for this question is A.
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September 22 is the beginning of ________ in the southern hemisphere.
autumn
spring
summer
winter
In this project, you will design and conduct an investigation in order to provide evidence that a feedback mechanism helps a living organism maintain homeostasis.
Background
The internal and external environments of living organisms are constantly changing in many ways. To stay alive, a living thing must maintain homeostasis (internal stability). Feedback mechanisms help living systems maintain this stability. A feedback mechanism does this by sensing a change in a condition and causing a response. Thus, it keeps an organism's internal conditions within a tolerable range. A positive feedback mechanism is one that encourages the change that was detected. A negative feedback mechanism is one that discourages the change.
Both the stimulus for feedback and the response can be internal or external. For example, an increase in a person's heart rate while running is an internal response to an internal stimulus. The upward movement of tree sap in spring is an internal response to an external stimulus. A lizard running under a rock to cool off in hot weather and a leaf's stomata opening and closing as the humidity rises and falls are external responses to external stimuli.
Before You Begin
1. Access and carefully read the document Guidelines for Safely Using Live Animals in Investigations. It can be accessed here, via the link ( https://media.apexlearning.com/One-Off/201907/24/39be3e51-02ee-4424-95cf-8d542ed5b16d.pdf ) the landing page of this activity, and in the Student Resources section of the course. Follow these guidelines as you design and conduct your investigation.
2. Select the type of animal or plant that you will investigate. The organism you select must have the following qualities:
It must be safe for you to handle (if necessary) and easy to care for.
It must display observable responses to external stimuli.
It must be observable without magnification or by using readily available tools (e.g., hand lens, light microscope, video magnifier, or binoculars).
It must be inexpensive, easy to obtain from a local source (such as your yard, a garden center, or a pet supply store), and easy to release or dispose of.
In order to conduct an experiment, you will need to have several individuals in each test group and control group. The chart contains the names of some types of organisms that are appropriate for such a study.
Appropriate Study Organisms
Plants
Animals
Bean, pea, or corn plants grown from seeds
Bedding plants from a nursery, such as cosmos, cucumber, oxalis, petunia, snapdragon, or zinnia
Crickets
Earthworms
Mealworms
Pill bugs
Water fleas (Daphnia sp.)
3. Research the appropriate methods for releasing or disposing of the organisms used in your investigation. You might need to do some research to discover examples of external stimuli and the responses that help organisms maintain homeostasis.
Part I: Design an Investigation (25 points)
1. Write a hypothesis that you will test with your investigation. (5 points)
2. Design an experiment that can test your hypothesis. Describe your design, including the organism and materials you plan to use, the investigation's variables, and your step-by-step procedures. (10 points)
3. Review your experimental design with your teacher. Verify the type of living organism you will study and materials you will need in order to conduct the experiment. Make sure the organisms and materials you need are readily available to you and that you have a plan to later dispose of the organisms and materials. You will also need a place to set up and conduct your experiment. Write a summary of the conversation you had with your teacher. (10 points)
Part II: Conduct Your Investigation (25 points)
After your design is approved, you will need to carefully describe and diagram your procedures and the types of data you plan to collect. Include the initial conditions, such as the source of your subjects, their activity level or location, and the temperature or amount of light or air present. Also include the final conditions of the subjects. Refine and repeat your experiment if your initial data do not provide evidence that your plants or animals responded to a stimulus. Determine whether a positive or negative feedback mechanism is involved. Submit a report to your teacher that includes the following:
Your final investigation design, including:
A list of materials you used during the investigation
A list of all the variables: independent variables, dependent variables, constants, and controls
A step-by-step procedure that includes at least three replications of each treatment
The data you collected, organized into tables and/or charts
The conclusions you were able to draw from your investigation
(giving 50 or more points)
Materials: Living organism (example: mouse, or plant), Data collection equipment (example: thermometer, pH meter, etc.), Computer or other device for data analysis.
What is equipment?Equipment is any physical item that is used to carry out an activity, provide a service, or manufacture a product. It can range from small tools and supplies to large machinery and buildings. Examples of equipment include tools, computers, vehicles, furniture, machines, buildings, and systems. Equipment can be used for a variety of purposes, such as to construct a building, to operate a business, to transport goods, to produce energy, to monitor a system, and to provide medical care. The selection of equipment depends on the task to be accomplished and the resources available. Proper use, maintenance and storage of equipment also play a key role in ensuring its effectiveness and efficiency.
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In the image below, in which location is carbon released into the atmosphere?
A
B
C
D
Answer: (d) the carbon released into the atmosphere at location D.
How are moles and particles related? how would you find the number of particles in 4 moles of a substance?.
6.022 × 10²³ units of a material make up one mole of that substance .numer of particles in 4 mole of substance can be found like this : 4×6.022 × 10²³= 24.088 × 10²³ particles.
What is 6.022× 10²³ called? who is it named after?it is called the Avogardo number or the Avogadro constant and is named after Ameo Avogadro was was an Italian physicist best known for his contribution to the theory of molecules, which is today known as Avogadro's law and asserts that equal volumes of gases at the same temperature and pressure will have the same number of molecules. The Avogadro constant, is the ratio of a substance's amount of substance (which has the unit mole) to the number of elementary entities (atoms, molecules, ions, or other particles) in that material. One of the seven defining constants of the SI, this constant is designated NA.
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