| 单词 | hydrophilic |
| 例句 | The hydrophilic ends repel each other, which helps to keep the oil suspended in water. Here's how to emulsify anything 2022-06-23T04:00:00Z We call them "hydrophilic" or water loving; those are the ones that will make your food taste bad. Here’s why your freezer smells bad — and what you can do about it 2023-05-02T04:00:00Z Thus, both surfaces of the plasma membrane are hydrophilic. Concepts of Biology 2013-04-25T00:00:00Z Functional groups are usually classified as hydrophobic or hydrophilic depending on their charge or polarity characteristics. Biology for AP Courses 2022-06-09T00:00:00Z The fatty acid portions of the lipid are hydrophobic, or “water hating,” while the other end is hydrophilic, or “water loving.” Miller & Levine Biology 2018-01-01T00:00:00Z In contrast, globular proteins are globes or spheres that tend to be highly reactive and are hydrophilic. Anatomy and Physiology 2013-06-19T00:00:00Z So, researchers from China turned to water-loving, or hydrophilic, liquid polymers that create a stable membrane where they meet, thanks to the attraction of their hydrogen bonds. Liquid-in-liquid printing method could put 3D-printed organs in reach 2019-11-01T04:00:00Z A phospholipid has both hydrophobic and hydrophilic regions. Concepts of Biology 2013-04-25T00:00:00Z The hydrophilic head groups of the phospholipids face the aqueous solution. Biology for AP Courses 2022-06-09T00:00:00Z When the lipids are in water, their hydrophobic “tails” cluster together while the hydrophilic “heads” are attracted to water. Miller & Levine Biology 2018-01-01T00:00:00Z It is composed of a phospholipid bilayer, with hydrophobic internal lipid “tails” and hydrophilic external phosphate “heads.” Anatomy and Physiology 2013-06-19T00:00:00Z Many plants and insects control their interactions with raindrops and other forms of ambient humidity using surface patterns of hydrophobic and hydrophilic regions1. Droplet motion electrically controlled 2019-08-20T04:00:00Z When protein folding takes place, the hydrophobic R groups of nonpolar amino acids lay in the interior of the protein, whereas the hydrophilic R groups lay on the outside. Concepts of Biology 2013-04-25T00:00:00Z The head is the hydrophilic part, and the tail contains the hydrophobic fatty acids. Biology for AP Courses 2022-06-09T00:00:00Z She said similar "hydrophilic" coatings have been used in urinary catheters to improve comfort. Self-lubricating condom 'success' 2018-10-16T04:00:00Z Additionally, the ions will interact with the hydrophilic amino acids, which will be selective for the charge of the ion. Anatomy and Physiology 2013-06-19T00:00:00Z Writing in Nature, Li et al.8 report an approach to tune the wettability of chemically robust hydrophilic surfaces by electrically controlling the adsorption and desorption of molecules called surfactants. Droplet motion electrically controlled 2019-08-20T04:00:00Z Recall that plasma membranes have hydrophilic and hydrophobic regions. Concepts of Biology 2013-04-25T00:00:00Z Cell surface receptors bind to hydrophilic ligands and initiate a signaling cascade that indirectly influences the making of a functional protein. Biology for AP Courses 2022-06-09T00:00:00Z Studies of water and ice in hydrophilic and hydrophobic mesoporous silicas: pore characterisation and phase transformations. Role of stacking disorder in ice nucleation 2017-11-07T05:00:00Z Such compounds are referred to as hydrophilic, or “water-loving.” Anatomy and Physiology 2013-06-19T00:00:00Z An applied voltage generates an electric force that causes this angle to decrease. b, Li et al.8 report a technique dubbed electro-dewetting, in which a droplet is placed on a nanometre-thick hydrophilic layer. Droplet motion electrically controlled 2019-08-20T04:00:00Z The fatty acid chains are hydrophobic and exclude themselves from water, whereas the phosphate is hydrophilic and interacts with water. Concepts of Biology 2013-04-25T00:00:00Z Thus, the bile salts hydrophilic side can interface with water on one side and the hydrophobic side interfaces with lipids on the other. Biology for AP Courses 2022-06-09T00:00:00Z The mix of hydrophobic yarns that repel moisture and hydrophilic yarns that retain some act to keep bodies cool without saturating the shirt. 9 ways to give your running gear a spring makeover 2017-03-15T04:00:00Z This is because sugar molecules contain regions of hydrogen-oxygen polar bonds, making it hydrophilic. Anatomy and Physiology 2013-06-19T00:00:00Z Under an electric current, surfactants are adsorbed on the hydrophilic layer. Droplet motion electrically controlled 2019-08-20T04:00:00Z They can be large or small, weakly acidic or basic, hydrophilic or hydrophobic, positively or negatively charged, or neutral. Concepts of Biology 2013-04-25T00:00:00Z The surface is also composed of the hydrophilic phosphate "heads" of phospholipids. Biology for AP Courses 2022-06-09T00:00:00Z For example, hydrophilic and -phobic groups arrange themselves differently in polar or non-polar liquids. Make better, safer biomaterials 2016-12-13T05:00:00Z Therefore, phospholipids are said to have hydrophobic tails, containing the neutral fatty acids, and hydrophilic heads, containing the charged phosphate groups and nitrogen atom. Anatomy and Physiology 2013-06-19T00:00:00Z Their adsorption on the hydrophilic surface reduces the solid–gas interfacial tension and thereby increases the contact angle. Droplet motion electrically controlled 2019-08-20T04:00:00Z Second, they added a substance called polydopamine, which made the plastic more hydrophilic. A cool shirt 2016-08-31T04:00:00Z Among the hydrophilic functional groups is the carboxyl group found in amino acids, some amino acid side chains, and the fatty acids that form triglycerides and phospholipids. Biology for AP Courses 2022-06-09T00:00:00Z When a mixture of oil and water is exposed to the membrane, the graphene oxide flakes trap water inside the structure, creating hydrophilic pockets that repel the oil. Graphene: Looking Beyond the Hype 2015-06-25T04:00:00Z Like other lipids, cholesterol’s hydrocarbons make it hydrophobic; however, it has a polar hydroxyl head that is hydrophilic. Anatomy and Physiology 2013-06-19T00:00:00Z A cotton shirt like this one is hydrophilic. Bill Nye to Grads: Change the World 2015-05-18T04:00:00Z Since it is water-based, sections exposed to this fluid are much more likely to be hydrophilic. Tackle Chemistry on the MCAT With a Sample Question 2015-03-17T04:00:00Z Other functional groups, such as the carbonyl group, have a partially negatively charged oxygen atom that may form hydrogen bonds with water molecules, again making the molecule more hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z "But with our textures you can use stronger materials - metals and ceramics - which are typically hydrophilic." Waterproof surface is 'driest ever' 2013-11-21T03:17:22Z Finally, like phospholipids, cholesterol molecules are found in the cell membrane, where their hydrophobic and hydrophilic regions help regulate the flow of substances into and out of the cell. Anatomy and Physiology 2013-06-19T00:00:00Z Instead of forming hydrogen bonds — a property normally associated with hydrophilic, or water-loving, molecules — F and other shape-mimicking bases developed by Kool's team were hydrophobic. Chemical biology: DNA's new alphabet 2012-11-21T18:21:07.117Z If values greater than zero are hydrophilic, then where is the circled section of the polypeptide in the figure below most likely to be found? Tackle Chemistry on the MCAT With a Sample Question 2015-03-17T04:00:00Z As a result, phospholipids are considered amphipathic because they have both hydrophobic and hydrophilic components. Biology for AP Courses 2022-06-09T00:00:00Z One end of these surfactant molecules is "hydrophilic", or water-loving, and the other "hydrophobic", or water-fearing. 'Magnetic emulsions' clean up oil 2012-06-21T14:22:17Z The phosphate group is negatively charged, making the head polar and hydrophilic—or “water loving.” Anatomy and Physiology 2013-06-19T00:00:00Z The two that won, MMO2 and SICS, “walk a thin line” between being hydrophobic and hydrophilic at the key position, Romesberg says. Chemical biology: DNA's new alphabet 2012-11-21T18:21:07.117Z A. Sections of a protein that would interact with ions or that are found on the extracellular surface, and thus exposed to the aqueous environment, are more likely to be hydrophilic in nature. Tackle Chemistry on the MCAT With a Sample Question 2015-03-17T04:00:00Z A phospholipid is an amphipathic molecule, meaning it has a hydrophobic and a hydrophilic part. Biology for AP Courses 2022-06-09T00:00:00Z One protein is attached to a hydrophilic peptide called FLAG. Proteomics: The interaction map 2012-04-11T17:21:02.077Z An amphipathic molecule is one that contains both a hydrophilic and a hydrophobic region. Anatomy and Physiology 2013-06-19T00:00:00Z There is less of an absorption problem with hydrophilic, or water-soluble vitamins. Q & A: Are Daily Nutrient Supplements Necessary? 2012-04-02T21:05:23Z The extracellular region would most likely be hydrophilic so as to facilitate interactions with its aqueous surroundings. Tackle Chemistry on the MCAT With a Sample Question 2015-03-17T04:00:00Z When protein folding takes place, the hydrophobic R groups of nonpolar amino acids lie in the interior of the protein, whereas the hydrophilic R groups lie on the outside. Biology for AP Courses 2022-06-09T00:00:00Z For comparison, the video starts with two other surfaces—one hydrophilic and the other merely hydrophobic. New Water-Repelling Surfaces Avoid the Deadly Perils of Icing [Video] 2012-01-26T14:15:02.263Z The hydrophilic portion can dissolve in water while the hydrophobic portion can trap grease in micelles that then can be washed away. Anatomy and Physiology 2013-06-19T00:00:00Z The result is a surface covered in frost that is no longer hydrophobic, but incredibly hydrophilic, or water-attracting, he said. Observatory: Imagining a New Skin That?s Able to Repel Ice 2011-01-04T00:02:28Z Figure 5.3 This phospholipid molecule is composed of a hydrophilic head and two hydrophobic tails. Biology for AP Courses 2022-06-09T00:00:00Z Residues can be large or small, weakly acidic or basic, hydrophilic or hydrophobic, positively or negatively charged, or neutral. Biology for AP Courses 2022-06-09T00:00:00Z The hydrophilic head group consists of a phosphate-containing group attached to a glycerol molecule. Biology for AP Courses 2022-06-09T00:00:00Z Figure 3.2 Phospholipid Structure A phospholipid molecule consists of a polar phosphate “head,” which is hydrophilic and a non-polar lipid “tail,” which is hydrophobic. Anatomy and Physiology 2013-06-19T00:00:00Z This characteristic is vital to the structure of a plasma membrane because, in water, phospholipids tend to become arranged with their hydrophobic tails facing each other and their hydrophilic heads facing out. Biology for AP Courses 2022-06-09T00:00:00Z Bile contains bile salts, which are amphipathic, meaning they contain hydrophobic and hydrophilic parts. Biology for AP Courses 2022-06-09T00:00:00Z Conversely, the amino acids that line the inside of the channel are hydrophilic to allow for the passage of water or ions. Biology for AP Courses 2022-06-09T00:00:00Z The glycocalyx is highly hydrophilic and attracts large amounts of water to the surface of the cell. Biology for AP Courses 2022-06-09T00:00:00Z Because the phosphate groups are polar and hydrophilic, they are attracted to water in the intracellular fluid. Anatomy and Physiology 2013-06-19T00:00:00Z Recall that plasma membranes are amphiphilic: They have hydrophilic and hydrophobic regions. Biology for AP Courses 2022-06-09T00:00:00Z The molecules are hydrophilic and cannot penetrate the hydrophobic interior of the plasma membrane. Biology for AP Courses 2022-06-09T00:00:00Z Amino acids such as valine, methionine, and alanine are nonpolar or hydrophobic in nature, while amino acids such as serine, threonine, and cysteine are polar and have hydrophilic side chains. Biology for AP Courses 2022-06-09T00:00:00Z Carboxyl groups release H+ , making its parent molecule hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z Large polar or ionic molecules, which are hydrophilic, cannot easily cross the phospholipid bilayer. Anatomy and Physiology 2013-06-19T00:00:00Z Carboxyl groups absorb H+ ion, making its parent molecule hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z Carboxyl groups release OH− , making its parent molecule hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z Integral proteins often span the membrane and can transport materials into or out of the cells; these embedded proteins can be hydrophilic or hydrophobic, depending on their placement within the membrane. Biology for AP Courses 2022-06-09T00:00:00Z Most cell membranes comprise two phospholipid layers with the hydrophilic phosphate ends of each molecule in the outer and inner surfaces. Biology for AP Courses 2022-06-09T00:00:00Z The hydrophobic region interacts with the large lipid molecules, whereas the hydrophilic region interacts with the watery chyme in the intestine. Anatomy and Physiology 2013-06-19T00:00:00Z The hydrophilic regions of the phospholipids tend to form hydrogen bonds with water and other polar molecules on both the exterior and interior of the cell. Biology for AP Courses 2022-06-09T00:00:00Z This type of protein has a hydrophilic region or regions, and one or several mildly hydrophobic regions. Biology for AP Courses 2022-06-09T00:00:00Z Thus, the membrane surfaces that face the interior and exterior of the cell are hydrophilic. Biology for AP Courses 2022-06-09T00:00:00Z Water-soluble hydrophilic ligands are unable to pass through the membrane; instead, they bind to cell-surface receptors, which transmit the signal to the inside of the cell. Biology for AP Courses 2022-06-09T00:00:00Z In contrast, hydrophilic hormones must interact with cell membrane receptors. Anatomy and Physiology 2013-06-19T00:00:00Z However, in solute potential, the other components are soluble, hydrophilic solute molecules, whereas in Ψm, the other components are insoluble, hydrophilic molecules of the plant cell wall. Biology for AP Courses 2022-06-09T00:00:00Z Every plant cell has a cellulosic cell wall and the cellulose in the cell walls is hydrophilic, producing a matrix for adhesion of water: hence the name matric potential. Biology for AP Courses 2022-06-09T00:00:00Z |
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