Which among the following correctly represents the characteristics of an anion exchanger O Anion exchangers attract negatively-charged proteins due to their positively-charged resin. O Anion exchangers attract positively-charged proteins due to their negatively-charged resin. O Anion exchangers attract positively-charged proteins due to their positively-charged resin. O Anion exchangers attract negatively-charged proteins due to their negatively-charged resin.
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- Which of the following statements is TRUE of diffusion? Diffusion of particles along the concentration gradient will occur until particles are equally distributed in all areas of the solution. Diffusion of particles along the concentration gradient will occur until the particles move fully from one side of the solution to the other. Diffusion of particles against the concentration gradient will occur until random motion occurs. Diffusion of particles against the concentration gradient will occur until all the particles have dissolved. Carl is examining an onion root tip cell under a microscope. Based on his observations, Carl proposes that the onion root tip cell has completed interphase and is now in the first phase of mitosis. Which of the following pieces of evidence would best support Crisanto’s claim? The cell’s chromosomes are aligned across the metaphase plate. Separated sister chromatids are being pulled towards…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.Select all of the following which are normally found in higher concentrations inside the cell. O PO4- O C- Na+ O Ca++ OH- K+
- Which of the following statements is CORRECT in describing the nature of water channels? Group of answer choices It is a channel for the transport of any liquid medium. It is a non-gated channel. It is a channel that can facilitate the transport of sodium ions. It is a channel for active transport.What could be the reason why hydroxylation of proline residues is critical to the structural integrity of collagen? Select the correct response The hydroxyl moities in Pro form disulfide bonds which stabilize collagen structure. The hydroxyl moities in Pro form ionic bonds (salt bridges) which stabilize collagen structure. The hydroxyl moities in Pro form hydrophobic interactions which stabilize collagen structure. The hydroxyl moities in Pro form peptide bonds which stabilize collagen structure. The hydroxyl moities in Pro form H-bonds which stabilize collagen structure.Which of the following statements about ion channels is INCORRECT? Like carrier proteins, most channel proteins are specific regarding which molecules are allowed to pass. Channel proteins can have open or closed configurations. Unlike carrier proteins, some channel proteins are engaged in active transport of solutes. Channel proteins are used extensively in nerve cells, in which they are responsible for transduction of electrical signals. Compared to carrier proteins, channel proteins allow much faster transport.
- When the net charge on either side of the plasma membrane is zero, what else is true? There is an equal number of K+ ions on each side of the plasma membrane. The K+ leak channels are open. The electrochemical potential across the membrane is zero. The resting membrane potential is between -20 mV and -200 mV.Distinguish the terms in the following pairs: osmotic conformity and osmotic regulation; stenohaline and euryhaline; hyperosmotic and hypoosmotic.What condition does the diagram show? movement of water a) The solution on the left side of membrane is hypoosmotic. b) The solution on the left side of the membrane is hyperosmotic. c) The solution on the left side of the membrane is isoosmotic. O d) The solution on the right side is hyperosmotic
- When two chambers are separated by a membrane permeable to water but not solute, if water is free to move in either direction without limitation or pressure, then water will move until the concentration of solute on both sides of the chamber is equal move until there is no water on the dilute side move until there is no water on the concentrated side move until the concentration of water on both sides of the chamber is equalWhich is the proper order of permeability the following solutes would show when it moves across a semi-permeable membrane? (from most permeable to least permeable) benzene, imidazole group of histidine, galactose, potassium ions galactose, potassium ions, imidazole group of histidine, benzene benzene, potassium ions, imidazole group of histidine, galactose potassium ions, galactose, benzene, imidazole group of histidineSolution says it's barbital who's going to be the most effective but I don't understand why. Barbital is more polar than Hexethal so in my understanding, Barbital is more likely to not be able to cress the membrane than Hexethal right?