Water is a [ Select ] * molecule which allows it to form [Select ] * bonds with othe molecules. This ability creates the properties of [Select ] * in which water molecules binds to each other and V[Select ] capillary in which the water molecules bind to other surfaces. covalent cohesion hydrogen polar adhesion
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- Which of the following is true of oxytocin? Multiple Choice The paraventricular nuclei are neurons where oxytocin is synthesized. Phenylalanine and arginine are the amino acids present in oxytocin. Oxytocin is essential for water conservation throughout life. Oxytocin is not a polypeptide.Amoeboid cells that migrate through our tissues, such as the class of white blood cells known as neutrophils, often do so in a directed manner, triggered, for instance, by chemical signals released by pathogens such as bacteria. Directed migration in response to a chemical stimulus is known as chemotaxis. Part of an efficient chemotactic response is the ability of cells to polarize. As is the case with our structurally-polar polymers like F-actin or microtubules, polarization here refers to an asymmetry in the cells, rather than an electrical charge. In this case, it involves one part of the cell becoming the “front” (or leading edge) and another the rear. In a well-polarized, migrating cell, it’s been observed that an active form of Rac (which, in turn, can activate ARP 2/3) is concentrated towards the front of the cell, whereas an active form of Rho (which, in turn, can activate formin, inhibit ADP, and activate myosin II) is found toward the rear of the cell. Based on your…Amoeboid cells that migrate through our tissues, such as the class of white blood cells known as neutrophils, often do so in a directed manner, triggered, for instance, by chemical signals released by pathogens such as bacteria. Directed migration in response to a chemical stimulus is known as chemotaxis. Part of an efficient chemotactic response is the ability of cells to polarize. As is the case with our structurally-polar polymers like F-actin or microtubules, polarization here refers to an asymmetry in the cells, rather than an electrical charge. In this case, it involves one part of the cell becoming the “front” (or leading edge) and another the rear. In a well-polarized, migrating cell, it’s been observed that an active form of Rac (which, in turn, can activate ARP 2/3) is concentrated towards the front of the cell, whereas an active form of Rho (which, in turn, can activate formin, inhibit cofilin/ADP, and activate myosin II) is found toward the rear of the cell. Based on your…
- Which of the following proteins serves a structural function (not an enzymatic function)? chymotrypsin thrombin elastase collagen trypsinThe figure shows interaction of various amino acids (Phe, Arg, and Asn) present in Hb with 2,3-DPG. The side chains of these amino acids and 2,3-DPG interactions are circled in red. HO Но Phe HN Asn H2N NH Arg You identify a mutant version of the globin chain where the Arg in circle 2 is replaced with aspartic acid in a patient. Would the Hb protein in this patient be able to transport oxygen even in the presence of 2,3-DPG? ASPARTIC ACID (asp) No, because the mutant Hb version will bind 2,3 DPG, and not oxygen Yes, because the mutant Hb version will bind 2,3 DPG, and not oxygen Yes, because the mutant Hb version will bind oxygen and not 2,3 DPGHow much active ingredient in 20 cc of a 15% solution? You have 1:1000 concentration of epinephrine. How many mLs do you need to draw up if you want to give 45 mg of the drug? (I need help please :)
- A peptide HEART was synthesized: What is the N-terminal AA? What is the C-terminal AA? At what pH is the zwitterionic form of HEART will be the predominant species? Showyour solution H,N, NH2 NH H H H H H он HThe distal histidine stabilises the iron in heme group of a deoxyhaemoglobin. T/FBased on the Hill Plot below, this protein-ligand interaction displays log Y 1-Y 5 2.5 0 -2.5 -2.5 nH1 2.5 Binding that obeys the Law of Mass Action Negative cooperativity 5
- The inner leaflet (monolayer) of the human erythrocyte membrane consists predominantly of phosphatidylethanolamine and phosphatidylserine. The outer leaflet consists predominantly of phosphatidylcholine and sphingomyelin. Although the phospholipid components of the membrane can diffuse in the fluid bilayer, this sidedness is preserved at all times. How?A hemoglobin molecule is made up of four polypeptide chains, two alpha chains of 141 amino acid residues each and two beta chains of 146 amino acid residues each. In the complete molecule, four subunits are closely joined, as in a three-dimensional jigsaw puzzle, to form a tetramer. Hemoglobin is showing level of structure O primary secondary tertiary quarternary O pentamericWhich of the following accurately describes the method of ion-exchange chromatography? O more than one option are correct increasing the salt concentration of the mobile phase can disrupt noncovalent interactions between proteins bound to the ion-exchange resin proteins are covalently bound to the stationary phase until salt elutes them from the column. a covalent bond between a charged functional group and the resin prevents the functional group from eluting from the column when the salt concentration is increased