Bacteria in the GI tract perform all the following functions except producing bile. Therefore, the correct option is D.
What is the GI tract?The GI tract is also called the Gastrointestinal tract. It is a path or the passage of the digestive system which begins from the mouth where the food enters and ends at the anus where the undigested food is expelled out of the body. It is also called alimentary canal.
Bacteria in the GI tract play an important role in human health by performing a wide range of functions. Some of the functions that these bacteria perform include producing biotin, which is a B vitamin that is significant for healthy skin, hair, and nails, and producing vitamin K, which is essential for blood clotting.
However, producing bile is not a function of the bacteria in the GI tract. Bile is produced by the liver and stored in the gallbladder. Therefore, the correct option is D.
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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:
CCC Cause and Effect Locate the chloroplast in the plant cell. What would
happen to a plant if a disease somehow damaged the chloroplasts so that
they could not function correctly? Explain .
The process of photosynthesis would be hampered if the chloroplasts were to malfunction.
What is damaging chloroplast?The plant would be unable to produce its own food and energy in this circumstance, and the cells' ability to operate normally would also be significantly compromised. Its green tint will eventually become yellow as the leaves began to wrinkle.
Damaged chloroplasts during development result in decreased photosynthetic efficiency, which significantly lowers plant productivity.
Therefore, chloroplast malfunction would interfere with the process of photosynthesis.
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What happens during a condensation reaction?
O A water molecule is consumed and a monomer is released.
O A water molecule is released and a monomer is attached.
O A water molecule and a monomer are both released.
A water molecule is consumed and a monomer is attached.
ANSWER"
A water molecule is consumed and a monomer is released.
Explanation:
A reaction in which two or more molecules combine to form a larger molecule, with the simultaneous loss of a small molecule such as water or methanol. While this occurs in many reactions, the term is usually reserved for reactions in which a new carbon-carbon bond is formed.
4. Applying life skill and its components in our academic career boosts our academic achievement. Please argue "for or against" this idea and demonstrate your arguments with satisfying examples.
A new careers program will assist primary school students by encouraging them to consider potential vocations early on, while also cultivating dreams and dispelling misconceptions.
What is Academic career?Children begin to think about their futures as they enter primary school, according to the evidence.
The software will make learning more engaging and excite students about the working world by age-appropriately connecting lessons to various occupations, training, and skills.
Additionally, it will give students the chance to network with companies and role models across a variety of industries, raising aspirations and connecting their education to potential future employment and vocations.
Therefore, A new careers program will assist primary school students by encouraging them to consider potential vocations early on, while also cultivating dreams and dispelling misconceptions.
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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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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 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.
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.
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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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:
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.
5. Fill in Box 5.16, listing three tissue types that either secrete, absorb, or store things for the human body, and explain what these tissues do.
Box 5.16 Tissue Types That Secrete, Absorb, or Store
Tissue
What Does It Secrete, Absorb, or Store?
Most of the secretory and absorptive tissues are epithelial tissues, while those that act as storage units are connective tissues and simple cuboidal epithelium and simple columnar epithelium are useful in the absorption and secretion of molecules during active transport.
What are Absorptive tissues?Most of the absorptive tissues contain epithelial cells that protect the human body from dangerous components in ingested foods where epithelial cells are important gateways to the human body.
Simple columnar epithelia are epithelia specialized for absorption that often have apical cilia or microvilli where these cells line the stomach and intestines.
Thus, most of the secretory and absorptive tissues are epithelial tissues.
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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.
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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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
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.
In which of the positions below is the Southern Hemisphere receiving the highest angles of insolation?
• A
• B
• C
• D
The position that sees the Southern Hemisphere receiving the highest angle of insolation is Position A.
What is the angle of insolation ?The angle at which the sun's rays fall on a specific spot on Earth is known as the angle of insolation. The Earth orbits the sun in an elliptical route rather than a perfect circle, thus some seasons of the year see Earth closer to the sun than others.
At position A, the tilt of the Earth is such that the Southern Hemisphere is more exposed to the sun which means that this is the point of the highest angle of insolation.
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1. Eutrophication
a. The number of natural resources used to support an individual's lifestyle
2. Biological
augmentation
b. The result of pollutants reacting with water in the air to form sulfuric acid, which falls
back to the earth's surface in rain, snow, sleet, or fog
3. Ecological
footprint
c. When fertilizers, animal waste, or sewage flow into waterways, causing algal blooms
and depriving other organisms of oxygen
WA
d. Adding natural predators to a damaged ecosystem
4. Biodiversity
hotspot
e. Areas of high biodiversity that have been significantly impacted by human activities
5. Acid
precipitation
Answer:
1. Eutrophication is the flow of fertilizers, animal waste, or sewage into waterways, causing algal bloomsand depriving other organisms of oxygen (c)
2. Biological augmentation is the adding of natural predators to a damaged ecosystem (d)
3. Ecological footprint is the number of natural resources used to support an individual's lifestyle (a)
4. Biodiversity hotspots are areas of high biodiversity that have been significantly impacted by human activities (e)
5. Acid precipitation is the result of pollutants reacting with water in the air to form sulfuric acid, which fallsback to the earth's surface in rain, snow, sleet, or fog (b)
Answer:
1c
2d
3a
4e
5b
6 An area qualifies as a biodiversity hotspot with two factors. The first is that 1,500 or more species in that area are endemic to the area. The second is that 70 percent of the original habitat must be lost in that area due to larger natural and manmade factors.
Explanation:
trust me
Certain amino acids in the protein help an enzyme catalyze the conversion of
substrates into products.
Where are these amino acids located?
On the outside surface
On cofactors
At the active site
On each end of the polypeptide
Answer:
The correct answer is "At the active site."
Explanation:
Enzymes are proteins that catalyze chemical reactions. The active site of an enzyme is the specific region where the substrate binds and the chemical reaction takes place. Certain amino acids located in the active site play a crucial role in catalyzing the reaction by positioning the substrate correctly and facilitating the formation of chemical bonds. These amino acids are usually found on the surface of the protein, and their specific arrangement and chemical properties are crucial for the enzyme's activity.
Answer:
At the active site
Explanation:
In a protein, certain amino acids play a crucial role in catalyzing the chemical reaction that converts substrates into products. These amino acids are located at the active site of the enzyme, which is the specific location where the substrate molecules bind and undergo chemical transformation. The active site is made up of a specific arrangement of amino acids that form a pocket or groove where the substrate fits and interacts with the enzyme to facilitate the reaction. The amino acids at the active site are strategically placed and oriented to form chemical bonds with the substrate, helping to bring about the desired reaction.
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
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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1. Form a Hypothesis Would this therapy work if mRNA were replaced with other types of
RNA, such as ribosomal RNA (rRNA) or transfer RNA (tRNA)? Use evidence to support
your hypothesis.
NOTEBOOK
2. Evaluate a Solution What are the advantages of using mRNA, rather than DNA, for
directing the synthesis of the drug? (HINT: Remember the role of regulating gene
expression in the cell.)
NOTEBOOK
3. Develop Models Review the steps of administering an mRNA drug. Add illustrations to
the figure to model the processes that are occuring inside the cell with the mRNA drug.
Either draw the illustrations by hand or copy diagrams from the chapter.
NOTEBOOK
4. Use Models Use your model to compare the administration of an mRNA drug to the
protein synthesis that the cell normally performs.
NOTEBOOK
5. Conduct Research Use an online search engine to research more information about
mRNA drugs, their uses, and their development. Be sure to take notes and to cite your sources.
The text: What happens when you take a conventional drug, such as aspirin or penicillin? The drug
travels through the blood stream, and then is absorbed by body cells or (as with penicillin)
by the cells of bacteria or other invaders. The drug does its work, but eventually it goes
away. Enzymes and other mechanisms break apart drugs and remove them from the body.
Today, researchers are trying to develop drugs in a very different way. The new drugs are a
modified form of messenger RNA (mRNA). Instead of directly completing the tasks of the
drug, the modified mRNA enters the cell and directs protein synthesis. Then the protein
takes action as a drug or medicine. The protein might be a vaccine or antibody, or it might
be an enzyme that the body cannot make or that it needs in an increased supply.
To develop mRNA drugs, researchers had to find a way to make the molecules last longer
in the body than they generally do. They also needed to "trick" the target cell into
recognizing and accepting the drug. Otherwise, the cell might attack the drug as if it were
a virus.
Researchers met both challenges with the same solution. The drug is not quite the same as
the natural mRNA found in cells. Instead, it uses a few nucleotides that are slightly
different from the normal nucleotides found in RNA. The modifications make the mRNA
both more stable and less virus like.
Answer:
The text describes the development of mRNA drugs and how they differ from conventional drugs. mRNA drugs work by directing protein synthesis inside the cells, and the protein produced by the cell acts as the drug. To develop mRNA drugs, researchers had to find a way to make the molecules last longer in the body and to avoid the cell recognizing the drug as a virus. The solution was to modify the mRNA so that it is different from the natural mRNA found in cells, making it more stable and less virus-like. The text does not directly address the hypothesis about whether mRNA can be replaced with other types of RNA for the therapy to work. However, it does suggest that the modifications to the mRNA are key to the drug's effectiveness and stability.
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?
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
Select the best answer. What can the reader infer about the importance the discovery of the shipwrecks has to archaeologists?.
The reader is led to assume that the finding of the ships is significant to archaeologists since it is the only proof of Spain's multiple attempts to establish a permanent settlement in Florida.
The field of ancient exploration known as "archaeologists studies of wrecks" is most frequently focused on thinking about and researching shipwrecks. Paleontology and jumping to get to be submerged archaeology are combined in its tactics. Studying wrecks can help us understand the past, connect us to our social inheritance, and teach us important lessons about how environmental factors and human error can interact.
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PLEASE HELP THIS IS DUE TODAY
THIIS IS WORTH A LOT OF POINTS
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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Which of these is not an advantage of genetically engineered crop plants?
A. They can produce their own pesticides.
B. They can grow larger than unmodified crops.
C. They cannot cause an allergic reaction.
D. They can contain extra nutrients.
Answer:
b
Explanation:
GMO foods are designed to be healthier and cheaper to produce. The advantages of GMO foods include added nutrients, fewer pesticides, and cheaper prices. Disadvantages of GMO foods can be allergic reactions or increased antibiotic resistance
What is diffusion and osmosis?
How does diffusion and osmosis work?
Answer:
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane, such as the cell membrane. In osmosis, water molecules move from an area of higher water concentration to an area of lower water concentration.
The process of diffusion and osmosis works by having molecules move from a region of high concentration to a region of low concentration. This movement is caused by the molecules having kinetic energy, which causes them to move around randomly. As they move, the molecules spread out, causing the concentration of the molecules to decrease in the area they are moving away from and to increase in the area they are moving towards. This process can be used to explain the movement of molecules across a semi-permeable membrane, such as the cell membrane. In this case, the molecules move from the area of higher concentration (inside the cell) to the area of lower concentration (outside the cell).
Answer:
What is Osmosis are Diffusion
•Osmosis is the process of moving solvent particles across a semipermeable membrane from the solvent’s higher concentration to the solvent’s lower concentration. The complete process does not require energy to take place
•Diffusion is the process of moving particles from a region of higher concentration to a region of lower concentration until equilibrium is reached. Simple diffusion does not require energy; however, facilitated diffusion requires ATP
How they work
•In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
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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