Johannes wants to know whether soil, water, or both are needed for plant growth. He chooses to conduct experiments on a willow tree for five years to answer his question. How can his experimental methods be changed to improve his experiment?

Answers

Answer 1
if he tries it with more than one willow tree, different amounts of water, and or soil.

Related Questions

In the Earth’s biomes, plants and animals must adjust to different amounts of sunlight and different lengths of seasons because of __________.

A.
weather
B.
climate
C.
elevation
D.
latitude

Answers

I would say D I think

Answer:

A Weather

Explanation:

Because the seasons inculde weather

cause of the change of temperature

Imagine that scientists have developed an experimental medication that completely blocks the sensation of pain. this medication most likely targets:

Answers

Final answer:

An experimental medication that blocks the sensation of pain would likely act at various points in the pain transmission pathway, including sensory nerve endings, nociceptor axons, or within the spinal cord to suppress pain signals.

Explanation:

An experimental medication that completely blocks the sensation of pain would target one or several points in the pain transmission pathway. These targets could include the sensory nerve endings, the nociceptor axon, or areas within the central nervous system such as the spinal cord. At the sensory nerve endings, medicines like NSAIDs (for example, ibuprofen) work to reduce the sensitization of nociceptors by prostaglandins. At the level of the nociceptor axon, local anesthetics such as lidocaine block sodium channels to prevent depolarization and consequently action potentials.

Opioids are known as excellent painkillers because they bind to enkephalin receptors and act in the spinal cord, enhancing the effects of enkephalins. Over time a homeostatic reduction in the sensitivity of these synapses develops in response to continued opioid exposure, leading to tolerance and the need for increased dosages for the same painkilling effect. This treatment of acute pain is often straightforward and can be tailored to act at specific points in the pain pathway, from peripheral sites to central nervous system components. Taken together, the medication described would likely work through one or several of these mechanisms to achieve its pain-blocking effects.

How many high-energy phosphates are consumed in converting 2 moles of lactate to glucose?

Answers

The ATP (adenoise triphosphate) is the energy rich phosphate molecule that is utilized during the energy requiring reactions while released in the energy reactions. The ATP molecules that are released or consumed in the given conditions are as follows : 1) Converting 1 mole glucose to lactate – this pathway is the anaerobic glycolysis of glucose and this releases 2 molecules of ATP. 2) Converting 2 moles of lactate to glucose – This process of forming glucose to lactate is known as gluconeogenesis and this process requires the ATP molecules. 1 mole of glucose consumes 3 ATP molecules thus, 2 moles consume 6 ATP molecules.

 

Final answer:

In the process of converting 2 moles of lactate to glucose through glycolysis, 6 high-energy phosphates are consumed.

Explanation:

In glycolysis, the conversion of 2 moles of lactate to glucose consumes 6 high-energy phosphates.

The energy-consuming phase of glycolysis uses 2 ATP molecules to transfer 2 phosphates to the glucose molecule, resulting in the formation of two three-carbon compounds, each containing a phosphate.

In the second phase of glycolysis, an additional phosphate is added to each of the three-carbon compounds, consuming another 2 ATP molecules.

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During childbirth, a woman is given an epidural anesthetic to relieve the pain. this is an example of what type of anesthesia?​

Answers

During childbirth, a woman is given an epidural anesthetic to relieve the pain. This is an example of REGIONAL anesthesia. This anesthesia is given during vaginal child birth, cesarean section and labor. It is the most preferred method to relieve pain during labor. The anesthesia is injected into the epidural space. 

During a cpr, class a student in the class asks what the difference is between cardioversion and defibrillation. what would be the nurse's best response?

Answers

The nurses best response would be "the difference is the timing of the delivery of the electric current."

Which statement about the cell membrane is true?
It contains cellulose and sugars that are involved in communication.
It is present in animal cells only.
It is rigid and elastic for supporting the cell’s shape.
It prevents harmful substances from entering a cell.

Answers

your answer would be the third choice, C.

Answer: The correct answer is -

It prevents harmful substances from entering a cell.

Explanation:

Cell membrane is a selectively permeable, protective layer that is present surrounding the cytoplasm of all cells of living organisms. It allows the entry and exit of only certain substances

It does not allow the harmful substances to enter inside the cell and at the same time, the useful substances to exit the cell. Due to this, it is also known as selectively permeable membrane.

Thus, last option is the right answer.

What is the primary symptom of niacin toxicity?

Answers

Final answer:

The primary symptom of niacin toxicity is flushing of the skin. Other symptoms can include itching, tingling, and a burning sensation. In severe cases, it can lead to liver damage.

Explanation:

The primary symptom of niacin toxicity is flushing, which is characterized by redness and warmth of the skin. This occurs because high doses of niacin cause the blood vessels to dilate. Other symptoms of niacin toxicity can include itching, tingling, and a burning sensation. In severe cases, niacin toxicity can lead to liver damage.

In addition to flushing, individuals experiencing niacin toxicity may encounter itching, tingling, and a burning sensation, all of which are uncomfortable and often distressing symptoms. It's important to note that niacin toxicity typically arises from the overconsumption of niacin supplements rather than dietary sources, as the body efficiently regulates niacin obtained from food.

In severe cases of niacin toxicity, which are relatively rare but can occur with excessive supplement usage, there is a risk of liver damage. The liver plays a crucial role in metabolizing niacin, and high doses can overwhelm this process, potentially causing harm to this vital organ.

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Final answer:

The primary symptom of niacin toxicity is flushing of the skin. Niacin flush is a harmless but uncomfortable sensation of warm, red skin. In rare cases, niacin toxicity can lead to more severe symptoms and complications.

Explanation:

The primary symptom of niacin toxicity is flushing of the skin.

Niacin, also known as vitamin B3, is often used as a supplement to treat high cholesterol. In high doses, it can cause a condition called niacin flush, which is characterized by a warm, red, and tingling sensation in the skin. This flushing is harmless, but it can be uncomfortable.

In rare cases, niacin toxicity can occur and lead to more severe symptoms, such as liver damage, stomach ulcers, and an increased risk of gout.

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In crocodiles the sperm and egg combine inside the body of the female then the female lays the eggs and the young develop outside her body which type of reproduction takes place

Answers

The type of reproduction that takes place in crocodile is called HERMAPHRODITISM.
An hermaphrodite is a living organism which has both the male and the female reproductive organs. Such animals do not need partners to reproduce, they reproduce on their own. Crocodile is an hermaphrodite because it is able to produce both the female and the male gametes on its own.

What is causing the initial discoloration of the chicken?

Answers

Meat and meat products have very short shelf life. These are easily spoiled by microbial contamination. Any discoloration in meat and meat products is a sign of bacterial contamination. Thus, it is very important to inspect the uncooked meat before cooking it.
The discoloration of chicken to shades of gray or dark color or yellowish color indicates food spoilage.

Answer: The initial coloration of chicken is caused by the growth of Pseudomonas.

Which particular function of nerve cells is facilitated by the unique shape of the cell

Answers

I need help with the answer also

Need help ASAPPPP!!!!!!!!!!!!!

Answers

D, as they all have to be nonliving factors.

I hope this helps and best of luck,

Carbono Konopia :)

D...
abiotic factors are environmental / nonliving factors

A tree grows and increases its mass explain why it is not a violation of the law of conservation of mass

Answers

A tree is not an isolated system. It gets nutrients from surrounding environment to grow and build its mass. A total mass of tree plus its environment is constant. 

gametes, sporophyte, gametophyte, and zygote. Explain how the terms are related.

Answers

These terms represent the stages that occur in alternation of generation. Alternation of generation describes the process in the life of some eurkaryotes [mostly plants and protists], it refers to the alternation in form which occur in these organisms. One form is usually diploid with 2n chromosomes, this is called the sporophyte while the other form is haploid with only one set of chromosomes and it is called the gametophyte.
The spores go through mitosis and produce gametophyte, the gametophyte produce gamete. Two gametes fuse together to become a zygote.

what type of rock has parallel bands of dark and light mineral grains

Answers

I believe the answer would be sedimentary rocks. 
sedimentary rocks is the answer


i hope this helps and have a great day!!

If you were receiving the most effective medication for body dysmorphic disorder, you would be receiving a(n):

Answers

Serotonin reuptake inhibitors, they are antidepressants.

which organism has a central brain A.sponge B. hydra C. flatworm D. fish

Answers

D fish as sponges don't exact have brains, hydra don't have brains and flatworms do not have brains.
THE ANSWER IS D-FISH HAVE GOOD DAY!!1

____________ are hepatic phagocytic cells of the reticuloendothelial system. hepatocytes kupffer cells langerhan cells merkel's cells

Answers

The phagocytic cells of the reticuloendothelial system present in the liver, are simply specialized macrophages known as hepatic (liver) Kupffer Cells.

During an imagine that during your assessment of tina you had heard diminished breath sounds in the lower left lobe (lll) posteriorly. what other assessment techniques would you have used and why?

Answers

Diminished breath sounds actually imply a reduction or lack of air movement. In this case, anterior and posteriorsymmetric chest expansion should be examined to evaluate and compare lung function. Tactile fremituspalpation, percussion, and voice sounds auscultation should also be conducted because these tests reveal the density of underlying tissue.

The other assessment technique is palpation which can be used to check her back.

Further Explanation:

During breathing, various noises are produced by the lungs and are called breath sounds. These sounds can be heard in all areas of the chest with the help of a stethoscope. This is known as auscultation.

The breath sounds heard by a stethoscope can be normal, absent or decreases, and abnormal. The decreased breathing sound could mean the accumulation of fluid or air into the lungs, decreased airflow to various parts of the lungs, or the chest wall has thickened.

To compare and evaluate the function of the lung, posterior and anterior symmetric chest expansion must be tested. palpation, tactile fremitus, voice sounds auscultation, and percussion can also be performed as these tests would examine the density of the tissue present beneath.

The physical examination which is done to determine the size or consistency of the underlying organ is called palpation. It is done by applying pressure through fingers on the surface of the body. Tactile fremitus can be done to assess the lungs for the intensity of the vibration perceived on the chest wall. The vibrations can also be heard by a stethoscope by speaking certain words which creates vocal resonance. Percussion is another method to determine the consistency and size of the organs. It also determines whether the organ consists of fluid or not.

Learn more:

Learn more about carbon dioxide https://brainly.com/question/1213217 Learn more about atmosphere https://brainly.com/question/2037060 Learn more about temperature https://brainly.com/question/1403211

Answer Details:

Grade: Higher secondary

Subject: Biology

Chapter:Respiratory Assessment

Keywords:

Breathing, breath sounds, lungs, auscultation, palpation, voice sound auscultation, tactile fremitus, percussion.

How could you determine the solute concentration inside a living cell?

Answers

A liquid that can easily pass through cell membranes is water. That is what is used in determining the concentration of the solute inside a living cell. You can place the cells in different osmotic environments. Then you observe and determine the environment that causes no uptake of water.
Final answer:

To determine solute concentration inside a living cell, one can use osmolarity, electronic cell counting devices, and cell membrane regulation.

Explanation:

To determine the solute concentration inside a living cell, you can use various techniques. One common method is the use of osmolarity, which is the concentration of solute particles in a solution. By comparing the osmolarity of the cell's cytoplasm to that of the surrounding extracellular fluid, you can determine the solute concentration inside the cell.

Another approach is the use of electronic cell counting devices, such as the Coulter counter, which detect changes in electrical resistance caused by the presence of cells in a saline solution.

Additionally, cell membranes have the ability to regulate the concentration of substances inside the cell, including ions, nutrients, and waste products. Through processes such as active transport or diffusion, the cell can maintain the desired solute concentration inside.

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The natural means by which filoviruses infect humans is __________.

Answers

The means is unknown. Filoviruses are known for causing hemorrhagic fever in humans. However, once a human is infected, passing the virus from person-to-person is the means by which others become infected. Most especially is the transmission through infected bodily fluids or objects that have been unsterilized and come into contact with those fluids.

A physician is has a patient that he believes has had foul play. What type of autopsy would the physician request?

Question 15 options:

Medical- legal autopsy


Investigation Autopsy


Medical Autopsy


Evidence Autopsy

Answers

A Medical-Legal Autopsy seeks to find the cause and manner of death. They are generally performed in cases of violent, suspicious or sudden deaths, deaths without medical assistance or during surgical procedures.

What is the name of the structure whose primary function is to store and concentrate bile?

Answers

The function is Hepatocytes

The gallbladder is the organ responsible for storing and concentrating bile, a digestive fluid necessary for fat digestion. It releases concentrated bile into the duodenum through the common bile duct in response to fat intake.

The structure whose primary function is to store and concentrate bile is known as the gallbladder. This small sac-like organ is positioned beneath the liver and plays a crucial role in the digestive process. The bile, produced by the liver, is essential for fat digestion and is concentrated in the gallbladder by removing some of its water content. When needed, particularly after a meal containing fats, the concentrated bile is released into the duodenum of the small intestine through the common bile duct to facilitate digestion.

Moreover, the gallbladder aids in the regulation of bile salts, which are important for the emulsification of dietary fats, ensuring that they can be properly broken down and absorbed by the body. The release of bile from the gallbladder is triggered when chyme containing fatty acids enters the duodenum, signaling the need for its digestive functions.

URGENTLY ANSWER! I HAVE ONLY A COUPLE MINUTES TO DO THIS!

What would be the main problem with reproduction if meiosis did not take place to form sex cells?

A. The zygote would have two nuclei.
B. Fertilization would result in a zygote with half as many chromosomes as the parents.
C. Fertilization would result in a zygote with twice as many chromosomes as the parents.
D. The zygote would have no nucleus.

Answers

I believe it is C. Hope this helps
Fertilization in that case would make a tetraploid zygote. 
To maintain the diploid 2n number for the species, that zygote would then have to undergo a reduction division that evicted half the chromosomes in an organized manner. I don't know if that helps or not, i found that on a good website to be honest i couldn't find a clear answer.

Volcanic domes commonly are partially destroyed when

Answers

When you have seen a land formation which is in the shape of a rough circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano, then most probably what you are seeing is a lava dome or a volcanic dome. Some of these lava domes’ geochemistry vary from basalt to rhyolite. Although the usual content are those mentioned, most of the preserved domes tend to have high silica content. The sleep flanks can partially destroy the domes. These can result to the collapsing and breaking into a jumble of blocks and ash that flow downhill. These domes can also be destroyed due to the explosions inside them. This happens when trapped gas builds up so much inside that it can no longer be held.

Volcanic domes, or lava domes, typically made of highly viscous silica-rich rock, often experience partial destruction during pyroclastic eruptions, which can produce devastating pyroclastic flows. These rapid flows eject volcanic materials at high speeds and temperatures, leading to the fragmentation and collapse of the dome's structure.

Volcanic domes, or lava domes, are formed from silica-rich volcanic rock like rhyolite and obsidian. They are characterized by their high viscosity, which prevents the lava from flowing far, resulting in the accumulation of material around the vent. These structures often emerge within the craters or on the flanks of stratovolcanoes, expanding from within as new lava is extruded. However, as lava domes increase in size, their outer surfaces cool, harden, and eventually become brittle. The continuous expansion and hardening lead to fracturing of the dome's surface, causing it to shatter and send loose fragments downhill.

Volcanic domes are commonly partially destroyed by pyroclastic eruptions, during which hot ash, gas, and rock fragments are ejected at high speeds. This process can generate pyroclastic flows swift, scalding avalanches of volcanic material that strip away parts of the dome. The violent nature of these eruptions can be catastrophic, stripping volcanic domes of their mass and drastically reshaping the landscape. Examples of this phenomenon can be seen at Mount Saint Helens and in other volcanic regions around the world. Among the possible causes for partial destruction of volcanic domes, pyroclastic eruptions and lahars are common, whereas glaciers eroding a dome or the dome growing larger than the crater are less typical triggers for the destruction of a lava dome.

How do hydrophobic and hydrophilic regions govern the arrangement of membrane lipids in a bilayer?

Answers

Hydrophobic regions repel water and in the phospholipid bilayer the legs of the phospholipid are hydrophobic and thus face inwards towards the other phospholipid. The hydrophilic heads are attracted towards water and thus are oriented outwards towards the fluid outside of the cell.

Lipids have a hydrophilic head and hydrophobic tail, that is, it is an amphipathic molecule. These characteristics allow lipids to be the appropriate molecules to make up cell membrane structures, as the hydrophilic head of the lipid faces the outside of the cell allowing the cell to come in contact with external substances, however, the hydrophobic lipid tail. faces the interior of the cell, preventing material from inside the cell from spilling out.

Which mechanical weathering process will be most common in an arid environment?

Answers

Final answer:

The most common mechanical weathering processes in an arid environment are thermal expansion and contraction, and salt crystal growth.

Explanation:

In an arid environment, the most common mechanical weathering process is called thermal expansion and contraction. This process occurs when rocks are repeatedly heated by the sun during the day and cooled at night. The constant temperature changes cause the outer layers of the rocks to expand and contract, resulting in their gradual breaking apart.

Another mechanical weathering process that can occur in arid environments is called salt crystal growth. This occurs when water containing dissolved salts seeps into cracks and crevices in rocks. As the water evaporates, the salts are left behind, and their crystals grow larger. This growth exerts pressure on the surrounding rock, leading to its fragmentation over time.

Which scientist disproved the idea that life comes from nonlife?

Answers

Louis Pasteur, disproved that idea

Answer:

    There were several scientists that studied this matter, but the most recognized one is Louis Pasteur.

Explanation:

     Pasteur was a French scientist that disproved the idea that life comes from nonlife by creating a very curious and smart experiment using a scientific tool called swan neck . By using this, he refuted the hyphotesis that the (ether) was on the air, he boiled the water with the swan neck connected to the frask, this way the air could enter the frask, refuting Needham on this matter mentioned above. After that, the abiogenesis wasn't a thing at the time anymore, and the next step was taken, to discover how life really happens.

True or false: somatic hypermutation can increase affinity without changing antigen specificity.

Answers

The answer is false. It is because somatic hypermutation does not have the ability to increase its affinity without having to change antigen specificity because it could only increase its affinity if the anitigen specificity of it has been changed.

If a rocky island appeared out of the water from volcano activity, what type of organism would most likely live there first?

Answers

lichens and moss for sure

Answer:

lichens and moss

Explanation:

Lichens are formed when there is a relationship between fungi and algae, that is, a symbiotic one, as it is a union that is advantageous for both. These organisms would probably appear if a rocky island appeared out of the water due to volcanic activity, because of all the humidity that would favor fungi and because of the presence of algae in the aquatic environment. Lichens reproduce asexually on rocks, soils, barks and tree trunks, through propagules called soredium that contain algae cells and fungi hyphae.

Mosses, in turn, live in humid and shaded environments. They can grow under different substrates such as soil, rocks, tree trunks and even walls. Some species of mosses form true green carpets, covering large areas. It would be very common for mosses to appear if a rocky island appeared out of the water due to volcanic activity, due to all the humidity in the place.

Mary has had several depressive episodes but only one manic episode. she would be diagnosed with:

Answers

Mary suffers from type 2 bipolar disorder.

 there are  2 states of the disorder, "up" (mania) and "down". The "up", is characterized by a high energy mood, accompanied by abnormal behavior that disrupts life and the "down", that is essentially what we know as depression. In this type, the mania isn't as strong as type one bipolar disorder so we call it a hypomanic episode.

A person affected by bipolar II disorder has at least one hypomanic episode in her life but has more often episodes of depression.

Mary has had several depressive episodes but only one manic episode. she would be diagnosed with Bipolar II Disorder.
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