When a substance readily forms hydrogen bonds with water, it can dissolve in water and is referred to as hydrophilic.
What is a hydrophilic substance?A hydrophilic substance is any object whose molecules are able to form chemical bonds with water molecules.
Solutes that are hydrophilic substances include, among others, glucose, aminoacids, cellulose, etc.
In conclusion, a substance that forms hydrogen bonds with water is hydrophilic.
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population is maintained by being cancelled out by
govermemt so yeah thats the answer
सरकार की इच्छा
Explanation:
Population is maintained by being cancelled out by government
PLEASE HELP!!!!!!!!!!!
40 POINTS!!!!!
Please write the Experimental and the Null Hypothesis for the following scenerio...
August 1, 2013
Light that Moves and Molds Gels
Pitt research team demonstrates gels that can be moved, controlled by light
PITTSBURGH—Some animals—like the octopus and cuttlefish—transform their shape based on environment, fending off attackers or threats in the wild. For decades, researchers have worked toward mimicking similar biological responses in non-living organisms, as it would have significant implications in the medical arena.
Now, researchers at the University of Pittsburgh have demonstrated such a biomimetic response using hydrogels—a material that constitutes most contact lenses and microfluidic or fluid-controlled technologies. Their study, published in Advanced Functional Materials, is the first to show that these gels can be both reconfigured and controlled by light, undergoing self-sustained motion—a uniquely biomimetic behavior.
Together with Olga Kuksenok, research associate professor in the Swanson School, Balazs experimented with a newer type of hydrogel containing spirobenzopyran molecules. Such materials had been previously shown to form distinct 2-D patterns on initially flat surfaces when introduced to varying displays of light and are hydrophilic in the dark but become hydrophobic under blue light illumination. Therefore, Balazs and Kuksenok anticipated that light could be a useful stimulus for tailoring the gel’s shape.
Using computer modeling, the Pitt team demonstrated that the gels “ran away” when exposed to the light, exhibiting direct, sustained motion. The team also factored in heat—combining the light and local variations in temperature to further control the samples’ motions. Controlling a material with light and temperature could be applicable, Balazs said, in terms of regulating the movement of a microscopic “conveyor belt” or “elevator” in a microfluidic device.
Experimental Hypothesis:
Null Hypothesis:
Answer:
PITTSBURGH—Some animals—like the octopus and cuttlefish—transform their shape based on environment, fending off attackers or threats in the wild. For decades, researchers have worked toward mimicking similar biological responses in non-living organisms, as it would have significant implications in the medical arena.
Now, researchers at the University of Pittsburgh have demonstrated such a biomimetic response using hydrogels—a material that constitutes most contact lenses and microfluidic or fluid-controlled technologies. Their study, published in Advanced Functional Materials, is the first to show that these gels can be both reconfigured and controlled by light, undergoing self-sustained motion—a uniquely biomimetic behavior.
“Imagine an apartment with a particular arrangement of rooms all in one location,” said lead author Anna Balazs, Pitt Distinguished Professor of Chemical and Petroleum Engineering in the Swanson School of Engineering. “Now, consider the possibility of being able to shine a particular configuration of lights on this structure and thereby completely changing not only the entire layout, but also the location of the apartment. This is what we’ve demonstrated with hydrogels.”
Together with Olga Kuksenok, research associate professor in the Swanson School, Balazs experimented with a newer type of hydrogel containing spirobenzopyran molecules. Such materials had been previously shown to form distinct 2-D patterns on initially flat surfaces when introduced to varying displays of light and are hydrophilic (“liking” water) in the dark but become hydrophobic (“disliking” water) under blue light illumination. Therefore, Balazs and Kuksenok anticipated that light could be a useful stimulus for tailoring the gel’s shape.
Using computer modeling, the Pitt team demonstrated that the gels “ran away” when exposed to the light, exhibiting direct, sustained motion. The team also factored in heat—combining the light and local variations in temperature to further control the samples’ motions. Controlling a material with light and temperature could be applicable, Balazs said, in terms of regulating the movement of a microscopic “conveyor belt” or “elevator” in a microfluidic device.
“This theoretical modeling points toward a new way
Need help ASP do tomorrow
Assume that a student is given two models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. How can the student demonstrate the theory of endosymbiosis using the models?
Answer:
37
Explanation: it is right
how do i find out the eyepiece magnification?
Answer:To calculate the magnification, we just need two numbers:
The telescope’s focal length (for example, 1200mm)
The eyepiece’s focal length (for example, 25mm)
Explanation:
Which states would be the most likely to experience the next volcanic eruption AND earthquake in the United States? List at least 3 for each hazard and explain why they might happen there.
Answer:
AlaskaWashingtonHawaiiCaliforniaOregonExplanation:
Eruptions along the western edge of the United States have formed the Cascades volcanic mountain range. Also, they develop island chains, such as the Aleutians in Alaska, which makes Alaska a potential volcanic eruption place. A prominent example of an eruption along the Ring of Fire was the dramatic eruption of Mount Saint Helens in Washington in 1980, which makes Washington a potential volcanic eruption state. Deep beneath Hawaii, there is a fixed source of abundant rising magma, called a hot spot, making Hawaii likely to be a volcanic eruption state. In 2018, they added Salton Buttes to the 2018 assessment, which is a high threat of a volcanic eruption. In other words, California is likely to be a volcanic eruption state. Eleven of the eighteen very high threat volcanoes are in Oregon, and few other states, where explosive and often snow- and ice-covered volcanoes can project dangerous long distances to densely populated and highly advanced areas.
Which is the best hypothesis for the scientific question "How does light intensity affect the rate of photosynthesis?"
O Light intensity, CO2 concentration, and temperature are factors that determine the rate of photosynthesis.
O Light intensity has no effect on the rate of photosynthesis,
• If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.
Light intensity has an impact on the rate of photosynthesis.
Answer: • If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.
Explanation:
its good to think about the hypothesis as an if then statement. Example: If the independent variable(light intensity) is changed than the dependent variable(rate of photosynthesis) with be effected in this way.
describes lipids in water
Answer:
Ok
Explanation:
Molecules such as proteins, nucleic acids, and carbohydrates have an affinity for water and are called hydrophilic (“water-loving”). Lipids, however, are hydrophobic (“water-fearing”). Some lipids are amphipathic—part of their structure is hydrophilic and another part, usually a larger section, is hydrophobic. Hope this helped
how does the cell cycle relate to reproduction
Answer:
Cell division is the process by which a parent cell divides into two or more daughter cells. Both of these cell division cycles are used in the process of sexual reproduction at some point in their life cycle. Both are believed to be present in the last eukaryotic common ancestor.
Explanation:
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good day
transport of oxygen in the blood is carried out by the cells known as; A.Leukocytes B.Erythrocytes C.Thrombocytes D.Hepatocyte
Answer:
Erythrocytes. They are red blood cells that travel in the blood. Their characteristics of being red, round, and like rubber give them the ability to complete their specific functions. They carry oxygen from the lungs to the body and bring carbon dioxide from the body to the lungs.
Explanation:
Akeem cut his finger during an investigation, and it is bleeding slightly. Before helping him bandage the wound, which precaution should the teacher take?
The teacher should clean the wound
Explanation:
the cut could've gotten something in it
One way to get consistent, valid data is to
be sure that instruments are calibrated properly.
use simple instruments to make measurements.
select the best data to place into data tables.
make the measurements as quickly as possible.
Answer:
be sure that instruments are calibrated properly.
Q: Explain why a coalition might be more effective at the local level than at the national level. Give
at least THREE reasons.
Coalition might be more effective at the local level than the national level because the people at the local level usually share same culture and have a common goal.
Coalition is a group that is formed by people or factions who partner and work towards a common goal. The main aim of coalition is to bring about a particular change.Coalition might be more effective at the local level than at the national level because the people at the local level usually share common goal. Also, the people at the local level usually share a common culture unlike the national level when different cultures are being considered.In conclusion, people at the local level also understands themselves better which helps in an effective coalition.
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Relate the functions and characteristics that all cells have
Explanation:
They provide structure and support, facilitate growth through mitosis, allow passive
ASAP need help
The louse Cymothoa exigua lives inside the mouth of certain fish. It attaches to the fish’s tongue, strangling it until it falls out. Once the tongue falls out, the louse functionally replaces it. Generally, this is thought of as a parasitic relationship.
What criteria would need to be met for this relationship to be considered parasitic? Is it possible that this relationship could be an example of mutualism or commensalism? Use what you have learned to classify this relationship and explain your reasoning.
Answer:
A parasitic relationship is the one in which parasite or the organism that feeds upon the host benefits while the host organism is negatively affected.
This relationship cannot be classified as mutualism or commensalism
To Understand the relationship between louse Cymothoa exigua and fishes we need to understand the following:
What is a parasitism?
A parasitic relationship occurs when one creature, the parasite, feeds on another organism, the host, causing injury and possibly death to the host. A parasite lowers the fitness of its host while increasing its own, usually by getting food and shelter.What is a mutualism?
Mutualism is a type of relationship in which both live organisms benefit equally and no one is harmed. Lichen is a mutualistic association between a fungus and algae, for example. ALgae provides food to fungus by photosynthesis and in return the fungus provides nutrients to algae.What is Commensalism?
commensalism is a relationship between members of two species in which one derives food or other benefits from the other without harming or benefiting the other.Orchids are a type of flowering plant that grows on tree trunks and branches. Orchids rely on the host plant's branches for sunlight and nourishment. on the other hand, they provide no benefit or harm to the host plants.Hence this relationship cannot be an example of either mutualisma and commensalism because the host fishes are harmed as their tongue falls out due to louse Cymothoa exigua and in return the parasite attaches itself to the host and feeds on them
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Give the NUMERICAL value to the following question. If a car was traveling 25
m/s and then accelerated at a rate of 5 m/s/s for 3 s, then what was the final
velocity?
Answer:
Given,
initial velocity= 25m/s
acceleration= 5 m/s
time= 3 s
final velocity= ?
We know that,
acceleration= final velocity- initial velocity/ time
or, 5 = final velocity- 25 / 3
or, 5*3 = final velocity- 25
or, 15+ 25= final velocity
Therefore, final velocity is 40 m/s.
Explain how all the properties of water are related. Provide an example to describe the interconnectivity of each property. Be sure to include hydrogen bonding, polarity, surface tension, capillary action, cohesion, adhesion, high specific heat, and expansion upon freezing.
Answer:
The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling. A water molecule is slightly charged on both ends. This is because oxygen is more electronegative than hydrogen. The stream of water bends due to the polarity of water molecules.
All the properties of water are related to one another by the polar nature that is caused by the partial electronegativity difference of the hydrogen and oxygen molecules of water molecules.
A water molecule has uneven distribution of charges between different atoms of the different molecules. All types of properties of water due to attractions between these polar molecules.
in water molecules slightly negative atoms of one molecule are attracted to the slightly positive atoms of other moleculesthe attraction forms hydrogen bonding, weak bonds between a hydrogen atom and another atomProperties of water due to polarity and hydrogen bonds:
surface tension - a measure of the force necessary to stretch or break the surface of a liquidcapillary action - the tendency of water to rise in a thin tubecohesion - water attracted to other water moleculesadhesion - Water attracted to other materialshigh specific heat - the amount of the heat that must be absorbed or lost for one gram of the substance to change its temperature by 1°Cexpansion upon freezing - ice is less dense than and on freezing it expands its structure and forms a cage-like structure.Learn more about the properties of water:
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Which of the following is a correctly written scientific name in proper binomial nomenclature?
A. [tex] \underline{\sf{oryza \: sativa}} [/tex]
B. Gnetum gnemon
C. [tex] \underline{\sf{Zea \: mays}} [/tex]
[tex] \: [/tex]
Please include an explanation.
Answer:
I think C because it is underlined and the species name is written in lower case letters and the genus name the first letter is written in upper case letters.
Drag each tile to the correct location. Match each type of plant to the correct image.
Answer:
How is anyone supposed to answer that when there’s no pictures to match so we can answer it
Explanation:
on: What does a cactus, house fly, and your grandmother have in common?
Answer:
They are all living organisms
Explanation:
A cactus, a house fly, and the grandmother all are living organisms. All the things show characteristics such as growth, metabolism, reproduction, etc. Thus, all can be considered as living things.
What are living organisms?A living organism is composed of different types of cells. The cell is the basic unit of life. These cells divide, and the body of the organisms show growth due to the increase in the number of these cells.
A cactus, a house fly, and the grandmother all are living organisms and show the defining properties of living things. These properties include growth, metabolism, and reproduction.
All the organisms grow with time as the cells undergo division and show metabolism as the cells undergo different reactions such as respiration, etc. All these organisms reproduce to form new organisms which are similar to themselves through the process of sexual and asexual modes of reproduction.
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What reasons are there to take an All Species Inventory?
Answer:
An attempt to document and identify all biological species living in some defined area, usually a park, reserve, or research area. The numbers of species on earth is rapidly diminishing, knowing what species are around will give us an idea of what we're losing, how our actions are affecting the environment.
explain the methods of preparing vermicompost by tank method
Answer:
1.To prepare compost, either a plastic or a concrete tank can be used. The size of the tank depends upon the availability of raw materials.
Collect the biomass and place it under the sun for about 8-12 days. Now chop it to the required size using the cutter.Prepare a cow dung slurry and sprinkle it on the heap for quick decomposition.Add a layer (2 – 3 inch) of soil or sand at the bottom of the tank.Now prepare fine bedding by adding partially decomposed cow dung, dried leaves and other biodegradable wastes collected from fields and kitchen. Distribute them evenly on the sand layer.Continue adding both the chopped bio-waste and partially decomposed cow dung layer-wise into the tank up to a depth of 0.5-1.0 ft.After adding all the bio-wastes, release the earthworm species over the mixture and cover the compost mixture with dry straw or gunny bags.Sprinkle water on a regular basis to maintain the moisture content of the compost.Cover the tank with a thatch roof to prevent the entry of ants, lizards, mouse, snakes, etc. and protect the compost from rainwater and direct sunshine.Have a frequent check to avoid the compost from overheating. Maintain proper moisture and temperature.
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The question is all in the image above..
Answer:
i think it is the 3rd one
what is photosynthesis, give with examples?
Anyone help me
Answer:
it is a process used by which plants use sunlight, water and carbon dioxide to create oxygen and energy in the form of sugar
what exactly is a different in following pictures A and B and need to be done to maintain the situation in picture B
Answer:
in picture A we can see that the environment is very dirty on the other hand in picture b the surrounding is really clean.
Explanation:
the following things should be done to maintain the situation in picture b÷
i) Participate in cleaning program.
ii) don't throw dust on the Road throw it in dustbin .
iii) Stop others from throwing dust in the road and make them clear about the importance of clean environment .
What protects the Earth from dangerous EM waves
Some plant cells have cell walls, while other plant cells have a cell membrane
for protection.
the flow of water
T or false and and explanation it’s 2.21
Answer:
False, all plants cells have cell membrane, in addition most of them have also cell wall. They have both
Help me I need an answer!!What is latitude?
Answer:
extent from side to side or distance sidewise from a given point or line, I got this from the internet so I don't know if it is correct sorry if it isn't
Baby neurons are found in the brains of _____, providing evidence for the concept of _____.
A. only children; neurogenesis
B. only children; lateralization
C. both adults and children; neurogenesis
D. both adults and children; lateralization
Answer: c
Explanation:
How many deciliters are there in one liter?
Answer:
I think its 10
Hope this helps but I might be wrong
