Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? All of these H2PO4-/HPO42- H2CO3/HCO3- Histidine+/histidine All of these H2PO4-/HPO42- H2CO3/HCO3- Histidine+/histidine ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The pH of a solution is determined by dielectric constant of the medium environmental effect relative concentration of acids and bases concentration of salt dielectric constant of the medium environmental effect relative concentration of acids and bases concentration of salt ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The lone pair electrons on oxygen in a H20 molecule form covalent bonds in ice carry a partial positive charge are not important for the properties of water carry a partial negative charge form covalent bonds in ice carry a partial positive charge are not important for the properties of water carry a partial negative charge ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following alcohols would be most soluble in water? butanol octanol methanol ethanol butanol octanol methanol ethanol ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7? 1 x 10-7 7 5 x 10-7 7 x 10-7 1 x 10-7 7 5 x 10-7 7 x 10-7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water? be repelled by water It will form a membrane in water It will act as a buffer and stabilize the pH It will be attracted to water be repelled by water It will form a membrane in water It will act as a buffer and stabilize the pH It will be attracted to water ANSWER DOWNLOAD EXAMIANS APP
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