Most of the important functional groups in biological molecules contain oxygen and a phosphate oxygen and/or nitrogen and are acidic oxygen and/or nitrogen and are polar nitrogen and a phosphate TRUE ANSWER : ? YOUR ANSWER : ?
The reason that fats contain more energy than simple sugars, is fats have many more carbon atoms hydrogen atoms covalent bonds hydrogen bonds TRUE ANSWER : ? YOUR ANSWER : ?
The strength of an acid depends on number of protons released electronegativity number of neutrons gain number of double bonds TRUE ANSWER : ? YOUR ANSWER : ?
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule? Strong base DNA Phospholipid Protein TRUE ANSWER : ? YOUR ANSWER : ?
Who discovered and described the blood groups (ABO) classification? Karl Hooper Theodor Kocher Karl Landsteiner Otto Warburg TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following organic groups are found in naturally occuring amino acids? Imidazole Indole All of these Guanidinium ion TRUE ANSWER : ? YOUR ANSWER : ?
The elements oxygen, nitrogen, and carbon are common elements in the molecules that make up living organisms contain protons and neutrons in their atomic nuclei All of these can all form covalent bonds with other elements TRUE ANSWER : ? YOUR ANSWER : ?
Polyprotic acids such as H3PO4, can act as acid-base buffers only in combination with polyprotic bases at pH values around any of their pKa's at pH values around neutrality if their concentration is kept low TRUE ANSWER : ? YOUR ANSWER : ?
The lone pair electrons on oxygen in a H20 molecule are not important for the properties of water form covalent bonds in ice carry a partial negative charge carry a partial positive charge TRUE ANSWER : ? YOUR ANSWER : ?
Weak acids generally have pKa values less than 1 that cannot be used to buffer pKa values greater than 2 been seldom found in living systems TRUE ANSWER : ? YOUR ANSWER : ?