Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? Histidine+/histidine H2PO4-/HPO42- H2CO3/HCO3- All of these Histidine+/histidine H2PO4-/HPO42- H2CO3/HCO3- All of these ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The elements oxygen, nitrogen, and carbon All of these contain protons and neutrons in their atomic nuclei are common elements in the molecules that make up living organisms can all form covalent bonds with other elements All of these contain protons and neutrons in their atomic nuclei are common elements in the molecules that make up living organisms can all form covalent bonds with other elements ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Weak acids generally have pKa pKa values greater than 2 that cannot be used to buffer values less than 1 been seldom found in living systems pKa values greater than 2 that cannot be used to buffer values less than 1 been seldom found in living systems ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Polyprotic acids such as H3PO4, can act as acid-base buffers at pH values around any of their pKa's only in combination with polyprotic bases at pH values around neutrality if their concentration is kept low at pH values around any of their pKa's only in combination with polyprotic bases at pH values around neutrality if their concentration is kept low ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Who discovered and described the blood groups (ABO) classification? Theodor Kocher Karl Hooper Otto Warburg Karl Landsteiner Theodor Kocher Karl Hooper Otto Warburg Karl Landsteiner ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The strength of an acid depends on number of protons released number of double bonds number of neutrons gain electronegativity number of protons released number of double bonds number of neutrons gain electronegativity ANSWER DOWNLOAD EXAMIANS APP
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