Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? H2CO3/HCO3- All of these H2PO4-/HPO42- Histidine+/histidine H2CO3/HCO3- All of these H2PO4-/HPO42- Histidine+/histidine ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A solution with pH = 5 is __________ than a solution with pH = 7. 10 times more basic 100 times more acidic 10 times more acidic 2 times more basic 10 times more basic 100 times more acidic 10 times more acidic 2 times more basic ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The lone pair electrons on oxygen in a H20 molecule carry a partial negative charge carry a partial positive charge are not important for the properties of water form covalent bonds in ice carry a partial negative charge carry a partial positive charge are not important for the properties of water form covalent bonds in ice ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules A Bronsted acid becomes __________ upon losing a proton. its conjugate acid its conjugate base a hydronium ion highly reactive its conjugate acid its conjugate base a hydronium ion highly reactive ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following statements about water is correct? It is critical for many of the chemical processes found in living systems Nonpolar substances like oils are not soluble in it Polar substances that can form hydrogen bonds will dissolve in it All of these It is critical for many of the chemical processes found in living systems Nonpolar substances like oils are not soluble in it Polar substances that can form hydrogen bonds will dissolve in it All of these ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reason that fats contain more energy than simple sugars, is fats have many more carbon atoms hydrogen bonds hydrogen atoms covalent bonds carbon atoms hydrogen bonds hydrogen atoms covalent bonds ANSWER DOWNLOAD EXAMIANS APP
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