Water, pH and Macromolecules Which of the following acid/base pairs act as natural buffers in living systems? H2PO4-/HPO42- All of these H2CO3/HCO3- Histidine+/histidine H2PO4-/HPO42- All of these H2CO3/HCO3- Histidine+/histidine ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reactions of molecules All of these are the reactions of the functional groups require an enzyme in all cases are independent of the functional groups All of these are the reactions of the functional groups require an enzyme in all cases are independent of the functional groups ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following statements about covalently bonded molecules is false? The chemical bonds that hold the molecule together are relatively strong Electrons are shared between the atoms that make up the molecule Noncovalent bonds may also be present, especially if the molecule is large Such molecules often result from the interaction of ionized atoms The chemical bonds that hold the molecule together are relatively strong Electrons are shared between the atoms that make up the molecule Noncovalent bonds may also be present, especially if the molecule is large Such molecules often result from the interaction of ionized atoms ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The reason that fats contain more energy than simple sugars, is fats have many more hydrogen atoms covalent bonds carbon atoms hydrogen bonds hydrogen atoms covalent bonds carbon atoms hydrogen bonds ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The main difference between an acid and a base is that bases are polar molecules and acids are not acids donate hydrogen ions in water while bases accept hydrogen ions bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not bases are polar molecules and acids are not acids donate hydrogen ions in water while bases accept hydrogen ions bases donate hydrogen ions in water while acids accept hydrogen ions acids are polar molecules and bases are not ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules H2O and CH4 are both examples of none of these molecules ions acids none of these molecules ions acids ANSWER DOWNLOAD EXAMIANS APP
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